Optical lens, camera module and electronic equipment

文档序号：54517 发布日期：2021-09-28 浏览：34次中文

阅读说明：本技术 光学镜头、摄像模组及电子设备 (Optical lens, camera module and electronic equipment ) 是由江依达于晓丹王海燕叶海水李战涛于 2021-05-10 设计创作，主要内容包括：一种光学镜头(45)、摄像模组(40)及电子设备(100)。光学镜头(45)包括自物侧至像侧依次排列的第一透镜(451)、第二透镜(452)、第三透镜(453)、第四透镜(454)、第五透镜(455)以及第六透镜(456)。第一透镜(451)、第三透镜(453)及第五透镜(455)均具有正光焦度,第二透镜(452)及第四透镜(454)均具有负光焦度,第六透镜(456)具有正光焦度或者负光焦度。第一透镜(451)至第六透镜(456)中的物侧面和像侧面包括至少一个非旋转对称的非球面。光学镜头(45)应用于摄像模组(40)和电子设备(100),摄像模组(40)和电子设备(100)能够在实现超广角拍摄的同时,又能够较大程度地解决超广角成像中的畸变问题。(An optical lens (45), an image pickup module (40) and an electronic apparatus (100). The optical lens (45) includes a first lens (451), a second lens (452), a third lens (453), a fourth lens (454), a fifth lens (455), and a sixth lens (456) which are arranged in order from the object side to the image side. The first lens (451), the third lens (453) and the fifth lens (455) have positive focal powers, the second lens (452) and the fourth lens (454) have negative focal powers, and the sixth lens (456) has either positive or negative focal powers. The object-side surface and the image-side surface of the first lens (451) to the sixth lens (456) include at least one non-rotationally symmetric aspherical surface. Optical lens (45) are applied to module of making a video recording (40) and electronic equipment (100), and module of making a video recording (40) and electronic equipment (100) can be when realizing the super wide angle and shoot, can solve the distortion problem in the super wide angle formation of image again to a great extent.)

1. An optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side, wherein the first lens, the third lens and the fifth lens all have positive focal power, the second lens and the fourth lens all have negative focal power, and the sixth lens has positive focal power or negative focal power;

the object side surface and the image side surface of the first lens to the sixth lens include at least one non-rotationally symmetric aspherical surface.

2. An optical lens according to claim 1, wherein the focal length f1 of the first lens and the focal length f2 of the second lens satisfy: -0.5 < f2/f1 < -0.01.

3. An optical lens according to claim 2, characterized in that the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy: -4 < f4/f3 < 0.

4. An optical lens according to claim 3, wherein the focal length f5 of the fifth lens and the focal length f of the optical lens satisfy: f5/f is more than 0.1 and less than 1.5.

5. An optical lens barrel according to any one of claims 1 to 4, wherein a radius of curvature R6 of an image-side surface of the third lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 0 < R6/R10 < 2.9.

6. An optical lens according to any one of claims 1 to 4, characterized in that a distance T45 between the fourth lens and the fifth lens and a focal length f of the optical lens satisfy: t45/f is more than 0.05 and less than 0.4.

7. An optical lens according to claim 6, wherein the optical lens satisfies:

0＜(T23+T56)/TTL＜0.5；

wherein T23 is a distance between the second lens element and the third lens element, T56 is a distance between the fifth lens element and the sixth lens element, and TTL is a distance from the object-side surface of the first lens element to the image plane in the optical axis direction of the optical lens system.

8. An optical lens according to any one of claims 1 to 7, wherein at least one of the non-rotationally symmetric aspheric surfaces comprises a first vertex and a second vertex, the first vertex and the second vertex are located in an optical effective area of the non-rotationally symmetric aspheric surface and both located in a sagittal plane of a lens of the non-rotationally symmetric aspheric surface, and the first vertex and the second vertex are symmetric with respect to a meridian plane of the lens of the non-rotationally symmetric aspheric surface;

the distance from the first vertex to the first reference surface is equal to the distance from the second vertex to the first reference surface, the first reference surface is perpendicular to the optical axis of the optical lens, and the intersection point of the optical axis of the optical lens and the non-rotation-symmetrical aspheric surface is located on the first reference surface.

9. An optical lens according to claim 8, wherein the non-rotationally symmetric aspheric surface further includes a third vertex and a fourth vertex, both located within an optical effective area of the non-rotationally symmetric aspheric surface and both located in a meridian plane of the lens in which the non-rotationally symmetric aspheric surface is located, the third vertex and the fourth vertex being symmetric with respect to a sagittal plane of the lens in which the non-rotationally symmetric aspheric surface is located;

the distance from the third vertex to the first reference plane is equal to the distance from the fourth vertex to the first reference plane.

10. An optical lens according to any one of claims 1 to 9, characterized in that the optical lens comprises a diaphragm, which is located between the second lens and the third lens.

11. An optical lens according to any one of claims 1 to 10, wherein the optical lens satisfies: the absolute TDT is less than or equal to 5.0 percent; wherein TDT is a maximum value of TV distortion in an imaging range of the optical lens.

12. An optical lens according to any one of claims 1 to 11, wherein the optical lens satisfies: FOV is more than or equal to 100 degrees and less than or equal to 140 degrees; the FOV is the angle of view of the camera lens group.

13. An optical lens according to any one of claims 1 to 12, characterized in that the optical lens satisfies: ImagH/TTL is more than 0 and less than 1; wherein, TTL is a distance from an object-side surface of the first lens element to an imaging surface in an optical axis direction of the optical lens, and ImagH is an image height of the imaging surface.

14. A camera module, comprising a circuit board, a photo sensor chip and the optical lens of any one of claims 1 to 13, wherein the photo sensor chip and the optical lens are both fixed on the circuit board, and the optical lens is configured to project ambient light to the photo sensor chip.

15. An electronic device comprising a housing and the camera module of claim 14, wherein the camera module is mounted within the housing.

Technical Field

The application relates to the field of lenses, in particular to an optical lens, a camera module and electronic equipment.

Background

In recent years, mobile phone photographing has been increasingly demanded, and especially, due to the popularization of large-size and high-pixel CMOS (complementary metal oxide semiconductor) chips, manufacturers have made more stringent requirements on imaging quality while pursuing the lightness, thinness and miniaturization of lenses. However, the conventional mobile phone has a significant distortion problem in imaging. Currently, to solve the distortion problem, the distortion is generally reduced by algorithm clipping or algorithm compensation. However, there is a risk of losing analytic power by using an algorithm to compensate distortion, and system resources need to be consumed when real-time correction is implemented in a video application scene or a photographing preview mode, which is a great challenge to equipment power consumption, heat dissipation, processing speed, and the like.

Disclosure of Invention

The application provides an optical lens, module and electronic equipment make a video recording, through the focal power design of first lens to sixth lens to and include at least one non-rotational symmetry's aspheric surface in the object side face and the image side face of first lens to sixth lens, thereby when realizing optical lens's super wide angle setting, can reduce the imaging distortion by great degree again.

In a first aspect, the present application provides an optical lens. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged in sequence from an object side to an image side. The first lens, the third lens and the fifth lens all have positive focal power. The second lens and the fourth lens both have negative focal power. The sixth lens has a positive power or a negative power.

The object side surface and the image side surface of the first lens to the sixth lens include at least one non-rotationally symmetric aspherical surface.

In the embodiment of the present application, a lens is taken as a boundary, a side where a subject is located is an object side, and a surface of the lens facing the object side may be referred to as an object side; the side of the lens where the image of the object is located is the image side, and the surface of the lens facing the image side may be referred to as the image side surface.

In this implementation, through with first lens third lens reaches fifth lens sets up to positive focal power, the second lens reaches fourth lens sets up to negative focal power, the sixth lens sets up to positive focal power or negative focal power, thereby is guaranteeing optical lens realizes better imaging quality's while, optical lens's angle of view can improve to a great extent, realizes optical lens's super wide angle setting.

It is understood that as the angle of view of the optical lens increases, the imaging distortion of the optical lens becomes more pronounced. For example, when the angle of view of the optical lens reaches 100 °, the imaging distortion of the optical lens is already greater than 10%. And for the optical lens capable of realizing ultra-wide-angle shooting, the imaging distortion is more obvious, and the imaging quality is worse. In the embodiment, at least one non-rotationally symmetrical aspheric surface is arranged in a lens of the optical lens for realizing the ultra-wide-angle design, so that the design freedom of an optical system is improved, the asymmetry of a free area can be utilized, the imaging quality of the optical lens is optimized, the distortion of the optical lens is corrected, and the optical lens is ensured to have better imaging quality.

Therefore, the optical lens of the implementation mode can not only realize ultra-wide-angle shooting, but also solve the distortion problem in ultra-wide-angle imaging to a greater extent. In other words, the implementation mode designs the ultra-wide angle optical lens with small imaging distortion.

In one implementation, the focal length f1 of the first lens and the focal length f2 of the second lens satisfy: -0.5 < f2/f1 < -0.01.

It can be understood that, when the focal length f1 of the first lens and the focal length f2 of the second lens satisfy the above relation, the first lens and the second lens can cooperate well, so as to collect light rays with a larger field angle to a greater extent, thereby realizing an ultra-wide angle setting of the optical lens.

In one implementation, the focal length f1 of the first lens and the focal length f2 of the second lens satisfy: f2/f1 is not less than 0.35 and not more than 0.03.

In one implementation, the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy: -4 < f4/f3 < 0.

It is understood that when the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy the above relation, the third lens and the fourth lens can be better matched, so that pupil aberration imaged by the optical lens is better corrected. In addition, the third lens and the fourth lens can compress the divergence angle of the light rays passing through the second lens.

In one implementation, the focal length f3 of the third lens and the focal length f4 of the fourth lens satisfy: f4/f3 is more than or equal to-2.5 and less than or equal to 0.

In one implementation, the focal length f5 of the fifth lens and the focal length f of the optical lens satisfy: f5/f is more than 0.1 and less than 1.5.

It can be understood that when the focal length f5 of the fifth lens and the focal length f of the optical lens satisfy the above relation, the focal power borne by the fifth lens can be reasonably distributed, so that the fifth lens has a better effect of correcting aberrations.

In one implementation, the focal length f5 of the fifth lens and the focal length f of the optical lens satisfy: f5/f is more than or equal to 0.5 and less than or equal to 1.

In one implementation, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0 < R6/R10 < 2.9.

It is understood that when the radius of curvature R6 of the image-side surface of the third lens element and the radius of curvature R10 of the image-side surface of the fifth lens element satisfy the above relationship, the third lens element and the fifth lens element can compress the ray divergence angle as much as possible, and correct the system curvature of field and distortion, thereby achieving a better imaging effect.

In one implementation, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy 0 < R6/R10 ≦ 2.

In one implementation, a distance T45 between the fourth lens and the fifth lens and a focal length f of the optical lens satisfy: t45/f is more than 0.05 and less than 0.4.

It is understood that when the distance T45 between the fourth lens and the fifth lens and the focal length f of the optical lens satisfy the above relationship, the degree of curvature of the object side surface of the fifth lens can be better controlled. In this case, the fifth lens has low processing difficulty and good feasibility.

In one implementation, a distance T45 between the fourth lens and the fifth lens and a focal length f of the optical lens satisfy: t45/f is more than or equal to 0.1 and less than or equal to 0.3.

In one implementation, the optical lens satisfies: 0 < (T23+ T56)/TTL < 0.5;

wherein T23 is the distance between the second lens and the third lens. T56 is the distance between the fifth lens and the sixth lens. TTL is a distance from an object-side surface of the first lens element to an image plane in an optical axis direction of the optical lens system.

It is understood that when the optical lens satisfies the above relationship, the total system length TTL of the optical lens can be well controlled, thereby facilitating a miniaturized setup of the optical lens. In addition, the system height of the optical lens can be well compressed, thereby being beneficial to the thin arrangement of the optical lens.

In one implementation, the optical lens satisfies: 0 < (T23+ T56)/TTL is less than or equal to 0.3.

In one implementation, at least one of the non-rotationally symmetric aspheres includes a first vertex and a second vertex. The first vertex and the second vertex are positioned in an optical effective area of the non-rotation-symmetrical aspheric surface and are both positioned in a sagittal plane of the lens of the non-rotation-symmetrical aspheric surface. The first vertex and the second vertex are symmetrical about a meridian plane of the lens on which the non-rotationally symmetrical aspheric surface is located.

The distance from the first vertex to a first reference plane is equal to the distance from the second vertex to the first reference plane. The first reference surface is perpendicular to the optical axis of the optical lens, and the intersection point of the optical axis of the optical lens and the non-rotationally symmetric aspheric surface is located on the first reference surface.

It can be understood that, by setting the first vertex and the second vertex to be symmetrical about the meridian plane of the lens where the non-rotationally symmetrical aspheric surface is located, and setting the distance from the first vertex to the first reference plane to be equal to the distance from the second vertex to the first reference plane, the optical lens can achieve a better correction effect and obtain an image with higher quality.

In one implementation, the non-rotationally symmetric aspheric surface further includes a third vertex and a fourth vertex. The third vertex and the fourth vertex are both positioned in an optical effective area of the non-rotation-symmetrical aspheric surface and are both positioned in a meridian plane of the lens in which the non-rotation-symmetrical aspheric surface is positioned. The third vertex and the fourth vertex are symmetrical about a sagittal plane of the lens on which the non-rotationally symmetrical aspheric surface is located.

The distance from the third vertex to the first reference plane is equal to the distance from the fourth vertex to the first reference plane.

It can be understood that, by setting the third vertex and the fourth vertex to be symmetrical about the sagittal plane of the lens where the non-rotationally symmetrical aspheric surface is located, and setting the distance from the first vertex to the first reference plane to be equal to the distance from the third vertex to the first reference plane, the optical lens can achieve better correction effect and obtain higher-quality images.

In one implementation, the optical lens includes a diaphragm. The diaphragm is located between the second lens and the third lens.

It is understood that the diaphragm is used to limit the amount of light entering to change the brightness of the image. In addition, when the diaphragm is located between the second lens and the third lens, the diaphragm can reasonably distribute the functions of the first lens to the sixth lens, for example, the first lens and the second lens can be used for receiving light rays with a large field angle to a large extent. The third lens to the sixth lens can be used to correct the effect of aberration. In this case, the optical lens of the present embodiment has a small number of lenses for enlarging the angle of view, and is advantageous in simplifying the configuration of the optical lens. In addition, the optical lens of the embodiment has a large number of lenses for correcting aberrations, which is beneficial to obtaining better imaging quality. Further, when the diaphragm is located between the second lens and the third lens, correction of diaphragm aberration is facilitated.

In one implementation, the optical lens satisfies: the absolute TDT is less than or equal to 5.0 percent; wherein TDT is a maximum value of TV distortion in an imaging range of the optical lens.

It is understood that when the | TDT | ≦ 5.0% for the optical lens, the optical lens is less distorted. The imaging quality of the optical lens is better.

In one implementation, the optical lens satisfies: FOV is more than or equal to 100 degrees and less than or equal to 140 degrees; the FOV is the angle of view of the camera lens group.

It is understood that when the field angle FOV of the optical lens satisfies: when the FOV is more than or equal to 100 degrees and less than or equal to 140 degrees, the field angle of the optical lens is larger, namely the optical lens realizes ultra-wide-angle setting.

In one implementation, the optical lens satisfies: FOV is more than 135 degrees and less than or equal to 140 degrees.

In one implementation, the optical lens satisfies: 0 < ImagH/TTL < 1. Wherein, TTL is a distance from an object-side surface of the first lens element to an imaging surface in an optical axis direction of the optical lens, and ImagH is an image height of the imaging surface.

It can be understood that when the optical lens satisfies the above relationship, the image height of the imaging surface of the optical lens is higher, that is, the imaging quality of the optical lens is better.

In a second aspect, the present application provides a camera module. The camera module comprises a circuit board, a photosensitive chip and the optical lens, wherein the photosensitive chip and the optical lens are fixed on the circuit board, and the optical lens is used for projecting ambient light to the photosensitive chip.

In this embodiment, when optical lens is applied to when the module of making a video recording, the module of making a video recording is when realizing super wide angle shooting, can reduce the formation of image distortion again to a great extent. In addition, the mode that the camera module reduces the imaging distortion can not consume system resources.

In a third aspect, the present application provides an electronic device. The electronic equipment can be a mobile phone, a tablet computer and the like. This electronic equipment includes the casing and like the module of making a video recording, the module of making a video recording install in the casing.

In this embodiment, when the module of making a video recording is applied to when electronic equipment, electronic equipment can reduce the formation of image distortion again to a great extent when realizing super wide angle shooting. Furthermore, the way the electronics reduce imaging distortion does not consume system resources.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 2 is a partially exploded schematic view of the electronic device shown in FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of the electronic device shown in FIG. 1 at line A-A;

FIG. 4 is an exploded view of the camera module of the electronic device shown in FIG. 1;

FIG. 5 is a schematic structural diagram of an optical lens of the camera module shown in FIG. 4;

FIG. 6 is a schematic plan view of an object side surface of a sixth lens of the optical lens shown in FIG. 5;

FIG. 7 is a schematic cross-sectional view of the sixth lens shown in FIG. 6 in the sagittal plane;

FIG. 8 is a schematic cross-sectional view of the sixth lens shown in FIG. 6 in a meridian plane;

fig. 9 is a schematic plan view of an image-side surface of a sixth lens of the optical lens shown in fig. 6;

FIG. 10 is a schematic diagram of a structure of one embodiment of a lens of the optical lens shown in FIG. 5;

fig. 11 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 10;

FIG. 12 is a schematic diagram of another embodiment of a lens of the optical lens of FIG. 5;

fig. 13 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 12;

FIG. 14 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens shown in FIG. 5;

fig. 15 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 14;

FIG. 16 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens shown in FIG. 5;

fig. 17 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 16;

FIG. 18 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens of FIG. 5;

fig. 19 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 18;

FIG. 20 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens shown in FIG. 5;

fig. 21 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 20;

FIG. 22 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens of FIG. 5;

fig. 23 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 22;

FIG. 24 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens of FIG. 5;

fig. 25 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 24;

FIG. 26 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens of FIG. 5;

fig. 27 is an imaging simulation diagram of respective lenses of the optical lens shown in fig. 26;

FIG. 28 is a schematic diagram of a structure of yet another embodiment of lenses of the optical lens of FIG. 5;

fig. 29 is an imaging simulation diagram of each lens of the optical lens shown in fig. 28.

Detailed Description

For the convenience of understanding the optical lens provided in the embodiments of the present application, the terms referred to in the present application are explained as follows:

the optical axis is an axis passing through the center of each lens.

The side of the lens near the object side is the object side.

The side of the lens adjacent to the image side is referred to as the image side.

Positive power, which may also be referred to as positive refractive power, means that the lens has a positive focal length.

Negative optical power, which may also be referred to as negative refractive power, means that the lens has a negative focal length.

Focal length (focal length), also known as focal length, is a measure of the concentration or divergence of light in an optical system, and refers to the perpendicular distance from the optical center of a lens or lens group to the focal plane when an infinite scene is imaged sharply at the focal plane through the lens or lens group. From a practical point of view it can be understood as the distance of the lens center to the imaging plane. For a fixed focus lens, the position of its optical center is fixed.

A field of view (FOV) is an angle of view formed by two edges of an optical instrument, at which an object image of a measurement target can pass through the maximum range of a lens, with the lens of the optical instrument as a vertex. The size of the field angle determines the field of view of the optical instrument, with a larger field angle providing a larger field of view and a smaller optical magnification.

An aperture, which is a device for controlling the amount of light transmitted through a lens, is typically located within the lens. The expression aperture size can be expressed by an F-number (symbol: Fno).

The F-number of the diaphragm is a relative value (reciprocal of the relative aperture) obtained by the focal length of the lens/the light-passing diameter of the lens. The smaller the number of the diaphragm F, the more the amount of light entering the same unit time. The larger the F number of the aperture is, the smaller the depth of field is, and the background content of the shot will be blurred, which is similar to the effect of a telephoto lens.

Total Track Length (TTL) is a distance from an object side surface of the first lens element of the optical lens to an image plane in a direction from the object side to the image side.

Entrance Pupil Diameter (EPD), which refers to the ratio of the focal length of the optical lens to the F-number of the aperture.

The abbe number, i.e. the dispersion coefficient, is the ratio of the refractive index differences of the optical material at different wavelengths, and represents the dispersion degree of the material.

Distortion (distortion), also known as distortion, is the degree to which an image made by an optical system on an object is distorted relative to the object itself. The distortion is caused by the influence of the spherical aberration of the diaphragm, the height of the intersection point of the principal rays of different view fields and the Gaussian image surface after passing through the optical system is not equal to the ideal image height, and the difference between the principal rays and the Gaussian image surface is the distortion. Therefore, the distortion only changes the imaging position of the off-axis object point on the ideal plane, so that the shape of the image is distorted, but the definition of the image is not influenced.

TV distortion (TV distortion) is the relative distortion, i.e. the degree of distortion of the actual image.

TDT denotes the maximum value of TV distortion in the imaging range of the optical lens.

Imagh (imaging high) represents half of the diagonal length of the effective pixel area on the photosensitive chip, that is, the image height of the imaging surface.

The chief ray (chief beam), the ray that exits from the edge of the object, passes through the center of the aperture stop and finally reaches the edge of the image.

The meridian plane is a plane formed by the principal ray (principal beam) of the object point outside the optical axis and the optical axis.

The sagittal plane, the plane passing through the principal ray (principal beam) of the optical axis foreign object point and perpendicular to the meridian plane, is called the sagittal plane.

First, specific structures of the electronic device, the image capturing module, and the optical lens will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 100 may be a mobile phone, a tablet personal computer (tablet personal computer), a laptop computer (laptop computer), a Personal Digital Assistant (PDA), a camera, a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, Augmented Reality (AR) glasses, an AR helmet, Virtual Reality (VR) glasses or a VR helmet, or other devices with photographing and image capturing functions. The electronic device 100 of the embodiment shown in fig. 1 is illustrated as a mobile phone.

As shown in fig. 2, in conjunction with fig. 1, fig. 2 is a partially exploded schematic view of the electronic device shown in fig. 1. The electronic device 100 includes a screen 10, a housing 20, a host circuit board 30, and a camera module 40. It is understood that fig. 1 and 2 only schematically show some components included in the electronic device 100, and the actual shape, the actual size, the actual position and the actual configuration of the components are not limited by fig. 1 and 2. In addition, when the electronic device 100 is a device of another type, the electronic device 100 may not include the screen 20 and the host circuit board 30.

Among other things, the screen 10 may be used to display images, text, and the like. The screen 10 may be a flat screen or a curved screen. Further, the screen 10 includes a protective cover 11 and a display 12. The protective cover 11 is stacked on the display 12. The protective cover plate 11 can be arranged close to the display screen 12 and can be mainly used for protecting and preventing dust for the display screen 12. The material of the protective cover 11 may be, but is not limited to, glass. The display 12 may be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a quantum dot light-emitting diode (QLED) display, or the like.

The housing 20 may be used to support the screen 10, among other things. The housing 20 includes a bezel 21 and a rear cover 22. The back cover 22 and the screen 10 are respectively installed on two opposite sides of the frame 21, and at this time, the back cover 22, the frame 21 and the screen 10 together enclose the inside of the electronic device 100. The interior of the electronic device 100 may be used to house devices of the electronic device 100 such as a battery, a receiver, and a microphone.

In one embodiment, the rear cover 22 is fixedly attached to the frame 21 by adhesive. In another embodiment, the rear cover 22 and the frame 21 form a unitary structure, i.e., the rear cover 22 and the frame 21 are a unitary structure.

Referring to fig. 2 again, and referring to fig. 1, the rear cover 22 has a light-transmitting portion 23. The light-transmitting portion 23 enables ambient light to enter the inside of the electronic apparatus 100. The shape of the light-transmitting portion 23 is not limited to the circular shape illustrated in fig. 1 and 2. For example, the shape of the light-transmitting portion 23 may be an ellipse or an irregular pattern.

Referring to fig. 3, fig. 3 is a partial cross-sectional view of the electronic device shown in fig. 1 at a line a-a. Light-transmitting portion 23 of rear cover 22 is a through hole. The through hole communicates the inside of the electronic apparatus 100 to the outside of the electronic apparatus 100. In addition, the electronic apparatus 100 further includes a camera trim 51 and a cover plate 52. Part of the camera decoration 51 may be fixed to the inner surface of the rear cover 22. Part of the camera trim 51 contacts the wall of the through hole. Further, a cover plate 52 is fixedly attached to an inner surface of the camera trim 51. The cover plate 52 may prevent external water or dust from entering the inside of the electronic device 100. The cover plate 52 may be made of glass or plastic. Fig. 3 illustrates one arrangement of the light-transmitting portion 23. Of course, the light transmission section 23 may be provided in another manner. For example, the rear cover 22 is made of a transparent material. A light-transmitting portion 23 is formed in a part of the rear cover 22.

Referring to fig. 3 again, and referring to fig. 2, the host circuit board 30 is installed inside the electronic device 100. The host circuit board 30 may be used to mount electronic components of the electronic device 100. For example, the electronic components may include a processor (CPU), a memory, a battery management unit, or an image processor.

In addition, the host circuit board 30 may be a hard circuit board, a flexible circuit board, or a rigid-flex circuit board. In addition, the host circuit board 30 may be implemented using FR-4 dielectric boards, Rogers dielectric boards, hybrid FR-4 and Rogers dielectric boards, and so forth. Here, FR-4 is a code for a grade of flame-resistant material, and the Rogers dielectric plate is a high-frequency plate.

Referring to fig. 3 again, and referring to fig. 2, the camera module 40 is fixed inside the electronic device 100. Fig. 3 illustrates the camera module 40 fixed to the surface of the screen 10 facing the rear cover 22. In other embodiments, the housing 20 may comprise a mid-plate. The middle plate is connected to an inner surface of the bezel 21, and the middle plate is located between the screen 10 and the rear cover 22. At this time, the camera module 40 may be fixed to a surface of the middle plate facing the rear cover 22.

In addition, the number of the camera modules 40 is not limited to the one given in fig. 1 to 3. The number of the camera modules 40 may be two or more. In addition, when the number of the camera modules 40 is two or more, two or more camera modules 40 may be integrated into one camera assembly. The image pickup module 40 may be, but not limited to, an Auto Focus (AF) image pickup module or a Fixed Focus (FF) image pickup module. The camera module 40 of the present embodiment is described by taking a fixed focus camera module as an example.

In the present embodiment, the camera module 40 is electrically connected to the host circuit board 30. At this time, the electronic components (e.g., processors) on the host circuit board 30 can send signals to the camera module 40 to control the camera module 40 to take images or record video. In other embodiments, when the electronic device 100 is not provided with the host circuit board 30, the camera module 40 may directly receive the signal and perform shooting according to the signal.

Referring to fig. 4 in conjunction with fig. 3, fig. 4 is an exploded view of the camera module of the electronic device shown in fig. 1. The camera module 40 includes a module circuit board 41, a photosensitive chip 42, a bracket 43, an optical filter 44, an optical lens 45, and a housing 46.

Wherein the module circuit board 41 can be fixed on the surface of the screen 10 facing the back cover 22. In other embodiments, when the housing 20 includes a middle plate, the module circuit board 41 may also be fixed to a surface of the middle plate facing the rear cover 22.

In addition, the module circuit board 41 is electrically connected to the host circuit board 30. Thus, signals can be transmitted between the host circuit board 30 and the module circuit board 41.

The photosensitive chip 42 is fixed on the module circuit board 41 and electrically connected to the module circuit board 41.

In one embodiment, the photo sensor chip 42 may be mounted on the module circuit board 41 by a Chip On Board (COB) technology. In other embodiments, the photosensitive chip 42 may be packaged on the module circuit board 41 by Ball Grid Array (BGA) technology or Land Grid Array (LGA) technology.

In other embodiments, electronic components or chips (e.g., driving chips) may be mounted on the module circuit board 41. The electronic component or chip is fixed to the periphery of the photosensitive chip 42. Electronic components or chips may be used to assist the light sensing chip 42 in collecting ambient light.

The bracket 43 is fixed on the module circuit board 41, and is located on the same side of the module circuit board 41 as the photosensitive chip 42. The bracket 43 is provided with a light hole 431. The photosensitive chip 42 may be located in the light transmission hole 431. The light sensing chip 42 can collect ambient light passing through the light hole 431.

In addition, the filter 44 is fixed to the bracket 43, and the filter 44 may be positioned in the light transmission hole 431. The optical filter 44 is used for filtering stray light in the ambient light, and projecting the filtered ambient light to the photosensitive chip 42, so as to ensure that the image captured by the electronic device 100 has better definition. The filter 44 may be, but is not limited to, a blue glass filter. For example, the filter 44 may be a reflective infrared filter, or a double-pass filter (the double-pass filter may transmit visible light and infrared light of ambient light simultaneously, or transmit visible light and other light of a specific wavelength (e.g., ultraviolet light) simultaneously, or transmit infrared light and other light of a specific wavelength (e.g., ultraviolet light) simultaneously).

Referring to fig. 4 in conjunction with fig. 3, the housing 46 is fixed to the surface of the bracket 43 opposite to the module circuit board 43. The housing 46 may be used to fixedly attach the optical lens 45 and may also be used to protect the optical lens 45.

In addition, the optical lens 45 is fixed to the inside of the housing 46. Fig. 3 illustrates the optical lens 45 partially within the area enclosed by the housing 46 and partially extending out of the housing 46. In other embodiments, the optical lens 45 may be entirely located within the area enclosed by the housing 46.

The structure of the relevant components of the camera module 40 is described above in detail. The structure of the optical lens 46 and the setting of the relevant optical parameters will be described in detail below with reference to the accompanying drawings.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an optical lens of the camera module shown in fig. 4. The optical lens 45 includes a lens barrel 450, and a first lens 451, a second lens 452, a third lens 453, a fourth lens 454, a fifth lens 455, and a sixth lens 456 which are arranged in order from the object side to the image side. The first lens 451, the second lens 452, the third lens 453, the fourth lens 454, the fifth lens 455, and the sixth lens 456 are sequentially mounted in the lens barrel 450. In other embodiments, the optical lens 45 may not include the lens barrel 450. The first through sixth lenses 451 through 456 may be mounted within the housing 46 of the camera module 40.

In addition, the optical lens 45 of the present embodiment further includes a stop 457. A stop 457 is located between each two lenses. The diaphragm may be an aperture diaphragm for limiting the amount of light entering to change the brightness of the image. The position of the stop is not limited to the stop illustrated in fig. 5 being located between the second lens 452 and the third lens 453. It is understood that when the stop 457 is located between the second lens 452 and the third lens 453, the stop 457 can reasonably distribute the functions of the first lens 451 to the sixth lens 456, for example, the first lens 451 and the second lens 452 can be used to receive light rays with a large field angle to a large extent. The third lens 453 to the sixth lens 456 can be used to correct the effect of aberrations. In this case, the optical lens 45 of the present embodiment has a small number of lenses for enlarging the angle of view, and is advantageous in simplifying the structure of the optical lens 45. In addition, the optical lens 45 of the present embodiment has a large number of lenses for correcting aberrations, which is advantageous for obtaining a good image quality. Further, when the stop 457 is located between the second lens 452 and the third lens 453, correction of aberration of the stop 457 is facilitated.

In other embodiments, the optical lens 45 may not include a diaphragm. It is to be understood that fig. 5 schematically shows only some components of the optical lens 45, and the actual shape, actual size, and actual configuration of these components are not limited by fig. 5.

In the present embodiment, the first lens element 451, the third lens element 453, and the fifth lens element 455 have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 may have a positive power or a negative power. In this way, by setting the powers of the first lens 451 to the sixth lens 456, the angle of field of the optical lens 45 can be greatly increased while the optical lens 45 can achieve good imaging quality, thereby achieving an ultra-wide angle setting of the optical lens 45.

In one embodiment, the first lens 451 can be used to expand the field of view of the optical lens 45, thereby allowing light rays of a larger field of view to enter the optical lens 45. The second lens 452 can cooperate with the first lens 451 to converge the light of large angle onto the photosensitive chip 42, thereby increasing the field angle of the optical lens 45. In addition, the third and fourth lenses 453 and 454 can compress a divergence angle of light. Further, the third lens 453 and the fourth lens 454 can also be used to correct aberrations of the optical lens 45. The fifth lens 455 can be used to expand the light, thereby increasing the height of the image formed on the photo-sensing chip 42. The sixth lens 456 is used to correct curvature of field and astigmatism of the image formed by the optical lens 45, thereby ensuring better image quality of the optical lens 45.

In the present embodiment, the object-side surface and the image-side surface of the first lens element 451 to the sixth lens element 456 each include at least one non-rotationally symmetric aspheric surface, that is, at least one of the object-side surface of the first lens element 451, the image-side surface of the first lens element 451, the object-side surface of the second lens element 452, the image-side surface … …, and the image-side surface of the sixth lens element 456 is a non-rotationally symmetric aspheric surface. In the present embodiment, the object-side surface 4561 and the image-side surface 4562 of the sixth lens 456 are aspheric in a non-rotational symmetry manner. In this embodiment, the side of the lens where the object is located is an object side, and a surface of the lens facing the object side may be referred to as an object side surface. The side of the lens where the image of the object is located is the image side, and the surface of the lens facing the image side may be referred to as the image side surface.

It is understood that as the angle of view of the optical lens increases, the imaging distortion of the optical lens becomes more pronounced. For example, when the angle of view of the optical lens reaches 100 °, the imaging distortion of the optical lens is already greater than 10%. And for the ultra-wide angle setting of the optical lens, the imaging distortion of the optical lens is more obvious, and the imaging quality is worse. In the present embodiment, at least one non-rotationally symmetric aspheric surface is disposed in a lens of the optical lens 45 that realizes a super-wide-angle design, so as to improve the design freedom of the optical system, optimize the imaging quality of the optical lens, correct the distortion of the optical lens, and ensure that the optical lens has better imaging quality.

Therefore, the optical lens 45 of the present embodiment can solve the distortion problem in the super-wide-angle imaging to a large extent while realizing the super-wide-angle shooting. In other words, the present embodiment designs the super-wide angle optical lens 45 with small imaging distortion.

In addition, when the object side surface 4561 and the image side surface 4562 of the sixth lens element 456 are aspheric, the sixth lens element 456 can correct curvature of field and astigmatism of the image formed by the optical lens 45 and also can correct distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Wherein the non-rotationally symmetric aspheric surface satisfies the following formula:

a coordinate system is established with the geometric center of the sixth lens 456 as an origin O, the optical axis of the sixth lens 456 is a Z axis, the sixth lens 456 is located in a sagittal plane of the sixth lens 456, a direction perpendicular to the optical axis is an X axis, the sixth lens 456 is located in a meridional plane, and a direction perpendicular to the optical axis is a Y axis. Z (x, y) is the rise of the vector parallel to the Z axis. N is the total number of polynomial coefficients in the series. Ai is the coefficient of the expansion polynomial of the ith term. r is the radial coordinate of the aspheric surface. And c is the aspheric vertex spherical curvature. K is a conic constant.

It can be understood that, according to the above relation, the object-side surface 4561 and the image-side surface 4562 of the sixth lens 456 of the present embodiment can be determined to be non-rotationally symmetric aspheric surfaces.

In addition, the remaining lenses of the first through sixth lenses 451 through 456, except for the sixth lens 456, are rotationally symmetric lenses. The present embodiment is described by taking the first lens 451 to the fifth lens 455 as rotationally symmetric lenses as an example. The object side surface and the image side surface of the rotationally symmetric lens are both rotationally symmetric aspheric surfaces, or the object side surface and the image side surface are both rotationally symmetric spherical surfaces, or one of the object side surface and the image side surface is a rotationally symmetric aspheric surface, and the other is a rotationally symmetric spherical surface. In this embodiment, an example will be described in which both the object-side surface and the image-side surface of the rotationally symmetric lens are rotationally symmetric aspherical surfaces. It can be understood that a rotationally symmetric aspherical surface has a high degree of freedom. Therefore, the present embodiment can design the rotationally symmetric lens of the optical lens 45 according to actual needs, and improve the aberration at different positions in a targeted manner, thereby improving the imaging quality.

The rotationally symmetric aspherical surface of the rotationally symmetric lens of the present embodiment satisfies the following formula:

a coordinate system is established by taking the geometric center of the rotationally symmetric lens as an origin O, and the optical axis direction of the rotationally symmetric lens is a Z axis. The X-axis is positioned in the sagittal plane of the rotationally symmetric lens and is vertical to the optical axis, the Y-axis is positioned in the meridional plane of the rotationally symmetric lens and is vertical to the optical axis. z is the rise of the aspheric surface. r is the radial coordinate of the aspheric surface. And c is the aspheric vertex spherical curvature. K is a conic constant. A. the_mAre aspheric coefficients. r is_maxIs the maximum value of the radial radius coordinate. u-r/r_max。

It is understood that the object-side surface and the image-side surface of the first lens element 451 to the fifth lens element 455 are aspheric surfaces having rotational symmetry by the above relational expressions.

In one embodiment, referring to fig. 6 and 7, fig. 6 is a schematic plan view of an object side surface 4561 of a sixth lens 456 of the optical lens system shown in fig. 5. Fig. 7 is a schematic sectional view of the sixth lens 456 shown in fig. 6 in a sagittal plane. A coordinate system is established with the geometric center of the sixth lens 456 as an origin O, wherein the optical axis of the sixth lens 456 is a Z-axis, the direction perpendicular to the optical axis is an X-axis, the direction perpendicular to the optical axis is a sagittal plane of the sixth lens 456, and the direction perpendicular to the optical axis is a Y-axis. Thus, the meridian plane of the sixth lens 456 is the YOZ plane in the coordinate system. The sagittal plane of the sixth lens 456 is the XOZ plane in the coordinate system.

The object side 4561 of the sixth lens 456 includes an optically active region 4563 and a non-optically active region 4564 connected to the optically active region 4563. Fig. 6 and 7 each distinguish the optically active area 4563 from the non-optically active area 4564 by a dashed line. In addition, FIG. 7 shows non-optically active region 4564 of object side 4561 in both the positive and negative directions of the X-axis. Optically active region 4563 refers to an area of object side 4561 through which light can pass. The non-optically active region 4564 is a region of the object side 4561 through which light cannot pass. A non-optically active region 4564 of the object side 4561 may be used for fixation on the barrel 450.

In addition, the sixth lens 456 includes a first vertex M1 and a second vertex M2. The vertex refers to the highest or lowest point on the object side surface 4561 of the sixth lens 456. In the present embodiment, the first apex M1 and the second apex M2 are the lowest points on the object side surface 4561 of the sixth lens 456. In other embodiments, the first vertex M1 and the second vertex M2 may be the highest points on the object side surface 4561 of the sixth lens 456. In addition, fig. 6 schematically shows the first apex M1 and the second apex M2 by bold dots. However, the shapes, sizes and positions of the first apex M1 and the second apex M2 are not limited to those illustrated in fig. 6.

In addition, first vertex M1 and second vertex M2 are both located on object side 4561 of sixth lens 456 and are both located within optically active region 4563 of object side 4561. In addition, the first vertex M1 and the second vertex M2 are both located in the XOZ plane (i.e., in the sagittal plane of the sixth lens 456). The first apex M1 is symmetrical to the second apex M2 about the YOZ plane (i.e., the meridian plane of the sixth lens 456).

Referring to fig. 7, the distance d1 from the first vertex M1 to the first reference plane P1 is equal to the distance d2 from the second vertex M2 to the first reference plane P1. The first reference plane P1 is perpendicular to the Z-axis (i.e., the optical axis of the optical lens 45), and the intersection of the Z-axis and the object side 4561 is located at the first reference plane P1.

It can be understood that, by making the first vertex M1 and the second vertex M2 symmetrical about the YOZ plane, and the distance d1 from the first vertex M1 to the first reference plane P1 equal to the distance d2 from the second vertex M2 to the first reference plane P1, the optical lens 45 can achieve better correction effect, resulting in higher quality imaging.

Referring to fig. 6 again in conjunction with fig. 8, fig. 8 is a cross-sectional view of the sixth lens 456 shown in fig. 6 in a meridian plane. The sixth lens 456 includes a third vertex M3 and a fourth vertex M4. In the present embodiment, the third vertex M3 and the fourth vertex M4 are highest points on the object side surface 4561 of the sixth lens element 456. In other embodiments, the third vertex M3 and the fourth vertex M4 may both be the lowest points on the object side surface 4561 of the sixth lens 456. In addition, although fig. 6 schematically shows the third apex M3 and the fourth apex M4 by bold dots, the shape, position, and size of the third apex M3 and the fourth apex M4 are not limited to the shape, position, and size shown in fig. 6.

In addition, the third vertex M3 and the fourth vertex M4, and the first vertex M1 and the second vertex M2 are located in the object side 4561 of the sixth lens 456 and in the optically active area 4563 of the object side 4561. The third apex M3 and the fourth apex M4 lie within the YOZ plane. And the third apex M3 and the fourth apex M4 are symmetrical about the XOZ plane.

Referring to fig. 8 again, the distance d3 from the third vertex M3 to the first reference plane P1 is equal to the distance d4 from the fourth vertex M4 to the first reference plane P1.

It can be understood that, by making the third vertex M3 and the fourth vertex M4 symmetrical in the XOZ plane, and making the distance d3 from the third vertex M3 to the first reference plane P1 equal to the distance d4 from the fourth vertex M4 to the first reference plane P1, the optical lens 45 can achieve better correction effect, resulting in higher quality imaging.

Referring to fig. 9 in combination with fig. 7, fig. 9 is a schematic plan view of an image-side surface 4562 of a sixth lens 456 of the optical lens system shown in fig. 6. The image side 4562 of the sixth lens 456 includes an optically active area 4565 and a non-optically active area 4566 connected to the optically active area 4565. Fig. 9 and 7 each separate an optically active area 4565 of image side 4562 from a non-optically active area 4566 of image side 4562 by dashed lines. In addition, FIG. 7 shows a non-optically active area 4566 of image side 4562 in both the positive and negative directions of the X-axis. Optically active area 4565 of image side 4562 refers to an area of image side 4562 through which light can pass. A non-optically active area 4566 of the image side 4562 is an area of the image side 4562 through which light cannot pass. A non-optically active area 4566 of the image side surface 4562 is available for attachment to the barrel 450.

In addition, the sixth lens 456 includes a fifth vertex N1 and a sixth vertex N2. The vertex refers to the highest point or the lowest point on the image side surface 4562 of the sixth lens 456. In the present embodiment, the fifth vertex N1 and the sixth vertex N2 are highest points on the image side surface 4562 of the sixth lens element 456. In other embodiments, the fifth vertex N1 and the sixth vertex N2 may both be the lowest points on the image-side surface 4562 of the sixth lens element 456. In addition, fig. 9 schematically shows the fifth vertex N1 and the sixth vertex N2 by bold dots. However, the shapes, sizes and positions of the fifth vertex N1 and the sixth vertex N2 are not limited to those illustrated in fig. 9.

In addition, the fifth vertex N1 and the sixth vertex N2 are both located on the image side 4562 of the sixth lens 456 and are both located within the optically active area 4565 of the image side 4562. The fifth vertex N1 and the sixth vertex N2 are both located in the XOZ plane (i.e., in the sagittal plane of the sixth lens 456). Further, the fifth vertex N1 and the sixth vertex N2 are symmetrical with respect to the YOZ plane (i.e., the meridian plane of the sixth lens 456).

Referring to fig. 7, the distance d5 from the fifth vertex N1 to the second reference plane P2 is equal to the distance d6 from the sixth vertex N2 to the second reference plane P2. The second reference plane P2 is perpendicular to the Z-axis (i.e., the optical axis of the optical lens 45), and the intersection of the Z-axis and the image side 4562 is located at the second reference plane P2.

It can be understood that, by making the fifth vertex N1 and the sixth vertex N2 symmetrical about the YOZ plane, and the distance d5 from the fifth vertex N1 to the second reference plane P2 equal to the distance d6 from the sixth vertex N2 to the second reference plane P2, the optical lens 45 can achieve a better correction effect, resulting in higher quality imaging.

Referring to fig. 9 again in combination with fig. 8, the sixth lens element 456 includes a seventh vertex N3 and an eighth vertex N4. In the present embodiment, the seventh vertex N3 and the eighth vertex N4 are the lowest points on the image-side surface 4562 of the sixth lens element 456. In other embodiments, the seventh vertex N3 and the eighth vertex N4 may both be the highest points on the image side surface 4562 of the sixth lens element 456. In addition, although fig. 9 schematically shows the seventh vertex N3 and the eighth vertex N4 by bold dots, the shape, position, and size of the seventh vertex N3 and the eighth vertex N4 are not limited to the shape, position, and size shown in fig. 9.

In addition, the seventh vertex N3 and the eighth vertex N4 and the fifth vertex N1 and the sixth vertex N2 are located in the image side surface 4562 of the sixth lens element 456 and are located in the optically active area 4565 of the image side surface 4562. The seventh apex N3 and the eighth apex N4 are located within the YOZ plane. The seventh vertex N3 and the eighth vertex N4 are symmetrical with respect to the XOZ plane.

Referring to fig. 8 again, the distance d7 from the seventh vertex N3 to the second reference plane P2 is equal to the distance d8 from the eighth vertex N4 to the second reference plane P2.

It can be understood that, by making the seventh vertex N3 and the eighth vertex N4 symmetrical in the XOZ plane, and making the distance d7 from the seventh vertex N3 to the second reference plane P2 equal to the distance d8 from the eighth vertex N4 to the second reference plane P2, the optical lens 45 can achieve better correction effect, resulting in higher quality imaging.

In the above embodiment, the object-side surface 4561 and the image-side surface 4562 of the sixth lens 456 are aspheric in a non-rotational symmetry manner. In other embodiments, when the object-side surface and the image-side surface of the other lens are aspheric, the object-side surface and the image-side surface of the other lens can also refer to the arrangement of the object-side surface 4561 and the image-side surface 4562 of the sixth lens 456. Details are not described herein.

Several arrangements of the object side 4561 and the image side 4562 of the sixth lens 456 are described above in detail. Several ways of setting the optical parameters of the optical lens 45 will be described in detail below.

In one embodiment, the first lens 451 and the second lens 452 satisfy: -0.5 < f2/f1 < -0.01. Where f1 is the focal length of the first lens 451. f2 is the focal length of the second lens 452. For example, f2/f1 is equal to-0.4, -0.3, -0.28, -0.21, -0.1, -0.02, etc.

It can be understood that when the focal length f1 of the first lens 451 and the focal length f2 of the second lens 452 satisfy the above relationship, the first lens 451 and the second lens 452 can better cooperate with each other to collect light rays with a larger field angle, thereby achieving an ultra-wide angle setting of the optical lens 45.

Of course, in other embodiments, the focal length f1 of the first lens 451 and the focal length f2 of the second lens 452 may not satisfy the above relational expression.

In one embodiment, the focal length f1 of the first lens 451 and the focal length f2 of the second lens 452 satisfy: f2/f1 is not less than 0.35 and not more than 0.03.

In one embodiment, the third lens 453 and the fourth lens 454 satisfy: -4 < f4/f3 < 0. Where f3 is the focal length of the third lens 453. f4 is the focal length of the fourth lens 454. For example, f4/f3 equals-3.8, -3, -2.2, -2, -1.7, -1, -0.8, etc.

It is understood that when the focal length f3 of the third lens 453 and the focal length f4 of the fourth lens 454 satisfy the above-mentioned relation, the third lens 453 and the fourth lens 454 can be well matched to better correct pupil aberration of the image formed by the optical lens 45. In addition, the third and fourth lenses 453 and 454 can compress the divergence angle of the light passing through the second lens 452.

Of course, in other embodiments, the focal length f3 of the third lens 453 and the focal length f4 of the fourth lens 454 may not satisfy the above relational expression.

In one embodiment, the focal length f3 of the third lens 453 and the focal length f4 of the fourth lens 454 satisfy: f4/f3 is more than or equal to-2.5 and less than or equal to 0.

In one embodiment, fifth lens 455 satisfies: f5/f is more than 0.1 and less than 1.5. Where f5 is the focal length of fifth lens 455. f is the focal length of the optical lens 45. For example, f5/f is equal to 0.2, 0.22, 0.33, 0.37, 0.5, 0.7, 0.9, 1, 1.1, 1.3, 1.4, etc.

It is understood that when the focal length f5 of the fifth lens 455 and the focal length f of the optical lens 45 satisfy the above-mentioned relation, the focal power borne by the fifth lens 455 can be reasonably distributed so that the fifth lens 455 has a good effect of correcting aberrations.

Of course, in other embodiments, the focal length f5 of the fifth lens 455 and the focal length f of the optical lens 45 may not satisfy the above-described relational expression.

In one embodiment, the focal length f5 of the fifth lens 455 and the focal length f of the optical lens 45 satisfy: f5/f is more than or equal to 0.5 and less than or equal to 1.

In one embodiment, the fifth lens 455 and the third lens 453 satisfy: 0 < R6/R10 < 2.9. Where R6 is a radius of curvature of the image side surface of the third lens 453. R10 is the radius of curvature of the image-side surface of fifth lens 455. For example, R6/R10 equals 0.22, 0.31, 0.5, 0.9, 1, 1.3, 2, 2.4, 2.6, 2.8, etc.

It is understood that when the radius of curvature R6 of the image-side surface of the third lens 453 and the radius of curvature R10 of the image-side surface of the fifth lens 455 satisfy the above relationship, the third lens 453 and the fifth lens 455 can compress the ray divergence angle as much as possible, and correct the system curvature of field and distortion, thereby achieving a better imaging effect.

Of course, in another embodiment, the radius of curvature R6 of the image-side surface of the third lens 453 and the radius of curvature R10 of the image-side surface of the fifth lens 455 may not satisfy the above relational expression.

In one embodiment, the radius of curvature R6 of the image-side surface of the third lens 453 and the radius of curvature R10 of the image-side surface of the fifth lens 455 satisfy 0 < R6/R10 ≦ 2.

In one embodiment, fourth lens 454 and fifth lens 455 satisfy: t45/f is more than 0.05 and less than 0.4. Where T45 is the distance between fourth lens 454 and fifth lens 455. f is the focal length of the optical lens 45. For example, T45/f is equal to 0.06, 0.11, 0.25, 0.29, 0.3, 0.33, 0.35, 0.36, 0.39, etc.

It is understood that when the distance T45 between the fourth lens 454 and the fifth lens 455 and the focal length f of the optical lens 45 satisfy the above relationship, the degree of curvature of the object side surface of the fifth lens 455 can be better controlled. In this case, the fifth lens 455 has low processing difficulty and can be implemented with good workability.

Of course, in other embodiments, the distance T45 between the fourth lens 454 and the fifth lens 455 and the focal length f of the optical lens 45 may not satisfy the above relationship.

In one embodiment, the distance T45 between the fourth lens 454 and the fifth lens 455 and the focal length f of the optical lens 45 satisfy: t45/f is more than or equal to 0.1 and less than or equal to 0.3.

In one embodiment, the optical lens 45 satisfies: 0 < (T23+ T56)/TTL < 0.5. Where T23 is the distance between the second lens 452 and the third lens 453. T56 is the distance between fifth lens 455 and sixth lens 456. TTL is a distance from the object side surface of the first lens element 451 to the image plane in the optical axis direction of the optical lens 45. For example, (T23+ T56)/TTL equals 0.02, 0.13, 0.24, 0.27, 0.3, 0.32, 0.35, 0.4, 0.48, etc.

It is understood that when the optical lens 45 satisfies the above relationship, the total system length TTL of the optical lens 45 can be well controlled, thereby facilitating the miniaturized arrangement of the optical lens 45. Further, the system height of the optical lens 45 can be also well compressed, which is advantageous for the thin-type installation of the optical lens 45.

Of course, in other embodiments, the optical lens 45 may not satisfy the above relationship.

In one embodiment, the optical lens 45 satisfies: 0 < (T23+ T56)/TTL is less than or equal to 0.3.

In one embodiment, the optical lens 45 satisfies: the absolute TDT is less than or equal to 5.0 percent; where TDT is the maximum value of TV distortion in the imaging range of the optical lens 45.

It will be appreciated that when the | TDT | ≦ 5.0% for optical lens 45, the distortion of optical lens 45 is smaller. The imaging quality of the optical lens 45 is better.

In one embodiment, the optical lens 45 satisfies: FOV is more than or equal to 100 degrees and less than or equal to 140 degrees; the FOV is the angle of view of the camera lens group. For example, FOV equals 100 °, 103 °, 112 °, 126 °, 135 °, 136 °, 137 °, 138 °, 139 °, 140 °.

It is understood that when the field angle FOV of the optical lens 45 satisfies: when the FOV is greater than or equal to 100 degrees and less than or equal to 140 degrees, the field angle of the optical lens 45 is large, that is, the optical lens 45 realizes ultra-wide angle setting.

In one embodiment, the optical lens 45 satisfies: FOV is more than 135 degrees and less than or equal to 140 degrees. For example, FOV equals 136 °, 137 °, 138 °, 139 ° or 140 °.

In one embodiment, the optical lens 45 satisfies: 0 < ImagH/TTL < 1. Wherein, TTL is a distance from the object side surface of the first lens element 451 to the image plane in the optical axis direction of the optical lens 45. The ImagH is half of the diagonal length of the effective pixel area on the photosensitive chip 42, i.e., the image height of the imaging surface. For example, ImagH/TTL equals 0.1, 0.22, 0.34, 0.45, 0.52, 0.66, 0.81, 0.97, etc.

It can be understood that, when the optical lens 45 satisfies the above relationship, the image height of the imaging surface of the optical lens 45 is higher, that is, the imaging quality of the optical lens 45 is better, and in addition, the total length of the optical lens 45 is smaller, which is beneficial to being applied to thin electronic devices such as mobile phones and flat panels.

In one embodiment, each lens of the optical lens 45 may be made of plastic, glass, or other composite materials. Wherein, the plastic material can easily prepare various lens structures with complicated shapes. The refractive index n1 of the glass lens satisfies: 1.50-n 1-1.90, and the selectable range of the refractive index is larger relative to the refractive index range (1.55-1.65) of the plastic lens, so that a thin glass lens with better performance can be obtained more easily, the on-axis thickness of a plurality of lenses of the optical lens 45 can be reduced, and the lens structure with a complex shape is not easy to manufacture. Therefore, in some embodiments of the present disclosure, the specific application material of different lenses is reasonably matched according to the needs in consideration of the manufacturing cost, efficiency and optical effect.

Some specific, non-limiting examples of embodiments of the present application will be described in more detail below with reference to the associated drawings.

The first embodiment: referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are both non-rotationally symmetric aspherical surfaces. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 10 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the first embodiment of the present application are shown in table 1 below.

Table 1 design parameters of the optical lens 45 of the first embodiment

Here, OBJ (object) represents an object plane. S1 denotes the object side surface of the first lens 451. S2 denotes the image side surface of the first lens 451. S3 denotes the object side of the second lens 452. S4 denotes the image side surface of the second lens 452. S5 denotes the object side surface of the third lens 453. S6 denotes the image side surface of the third lens 453. S7 denotes the object side of the fourth lens 454. S8 denotes the image side surface of the fourth lens 454. S9 denotes the object side of fifth lens 455. S10 denotes the image side surface of the fifth lens 455. S11 denotes the object side surface of the sixth lens 456. AAS (anamorph aspheral surface, non-rotationally symmetric aspheric). Therefore, S11(AAS) indicates that the object-side surface of the sixth lens 456 is an aspherical surface having a non-rotational symmetry. S12 denotes the image side surface of the sixth lens 456. S12(AAS) indicates that the image-side surface of the sixth lens 456 is an aspherical surface having a non-rotational symmetry. S13 denotes the object side surface of the filter 44, and S14 denotes the image side surface of the filter 44. STOP denotes STOP 457. In the present application, the meanings of symbols such as OBJ, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, AAS, and STOP are the same, and are not described again in the following description.

In addition, the thickness of S1 refers to the distance between the object-side surface of the first lens 451 and the image-side surface of the first lens 451. The thickness of S2 refers to the distance between the image side surface of the first lens 451 and the object side surface of the second lens 452. The thickness of S3 refers to the distance between the object side surface of the second lens 452 and the image side surface of the second lens 452. The thickness of S4 refers to the distance between the image side surface of the second lens 452 and the stop. The thickness of the diaphragm refers to the distance between the diaphragm and the third lens 453. The thickness of S5 refers to the distance between the object side surface of the third lens 453 and the image side surface of the third lens 453. The thickness of S6 refers to the distance between the image-side surface of the third lens 453 and the object-side surface of the fourth lens 454. The thickness of S7 refers to the distance between the object side surface of the fourth lens 454 and the image side surface of the fourth lens 454. The thickness of S8 refers to the distance between the image-side surface of the fourth lens 451 and the object-side surface of the fifth lens 455. The thickness of S9 refers to the distance between the object-side surface of fifth lens 455 and the image-side surface of fifth lens 455. The thickness of S10 refers to the distance between the image-side surface of fifth lens 455 and the object-side surface of sixth lens 456. The thickness of S11 refers to the distance between the object-side surface of the sixth lens 456 and the image-side surface of the sixth lens 456. The thickness of S12 refers to the distance between the image-side surface of the sixth lens 456 and the object-side surface of the filter 44. The thickness of S13 refers to the distance between the object side surface of filter 44 and the image side surface of filter 44. The thickness of S14 refers to the distance between the image side surface of the optical filter 44 and the image plane. It should be noted that, in the present application, when appearing again in the following tables, the same meanings are represented and will not be described again.

From the data in table 1, the design parameters of the optical lens 45 according to the first embodiment of the present application can be obtained as shown in table 2.

Table 2 design parameters of optical lens 45 of the first embodiment

f1(mm)	50.491	f4(mm)	-8.241
				f2(mm)	-11.143	f5(mm)	3.345
f3(mm)	4.053	f6(mm)	-8.868
				f(mm)	4.18	\|f1/f\|	12.078
\|f2/f\|	2.665	\|f3/f\|	0.969
				\|f4/f\|	1.971	\|f5/f\|	0.8
\|f6/f\|	2.121	f2/f1	-0.221
				f4/f3	-2.033	FOV(°)	104
f/EPD	2.05	T45/f	0.243
				ImagH(mm)	4.46	TTL(mm)	12.653
ImagH/TTL	0.352	(T23+T56)/TTL	0.019
				R6/R10	1.583	Fno	2.05

Where f1 denotes the focal length of the first lens 451. f2 denotes the focal length of the second lens 452. f3 denotes the focal length of the third lens 453. f4 denotes the focal length of the fourth lens 454. f5 denotes the focal length of fifth lens 455. f6 denotes the focal length of the sixth lens 456. f denotes the focal length of the optical lens 45. The FOV is the field angle of the optical lens 45. EPD represents the entrance pupil diameter of the optical lens 45. T45 represents the distance between fourth lens 454 and fifth lens 455. ImagH represents half of the diagonal length of the effective pixel area on the photo-sensing chip 42, i.e., the image height of the imaging plane. TTL denotes the total length of the optical lens 45. T23 is the distance between the second lens 452 and the third lens 453. T56 is the distance between fifth lens 455 and sixth lens 456. R6 is a radius of curvature of the image-side surface of the third lens 453. R10 is the radius of curvature of the image-side surface of fifth lens 455. Fno is the f-number of the optical lens 45. It should be noted that, in the present application, the meanings of symbols such as f1, f2, f3, f4, f5, f6, f, EPD, T45, ImagH, TTL, T23, T56, R6, R10, Fno, and FOV are the same, and are not described again in detail in the following.

As can be seen from table 2, the field angle FOV of the optical lens 45 is 104 °, and the f-number Fno is 2.05, that is, the optical lens 45 of the present application can realize a large field angle and a large aperture (it can be understood that the smaller the f-number Fno, the larger the aperture is), and can better meet the requirement of shooting. In addition. The TTL is 12.653mm, the ImagH is 4.46mm, and the ImagH/TTL is 0.352, that is, the effective pixel area projected onto the photo chip 42 through the optical lens 45 of the present embodiment is large, and the total optical length TTL of the optical lens 45 can be small, so that high imaging quality can be obtained, the length of the optical lens 45 can be small, and the optical lens can be applied to thin electronic devices such as mobile phones and tablet computers.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the first embodiment of the present invention are as follows in table 3.

Table 3 design parameters of rotationally symmetric lens of optical lens 45 according to the first embodiment

Flour mark

0.0000E+00

2.4965E-03

-5.6139E-05

0.0000E+00

7.9848E-03

-1.5913E-04

0.0000E+00

3.3387E+00

-1.2819E+00

2.9002E-01

-1.2724E-01

-1.7361E-03

3.7577E-02

-5.1035E-02

3.5319E+00

-3.5425E+00

-4.4467E-01

4.1033E-01

1.6697E-01

-1.5267E-01

-1.1400E-01

2.6616E+00

-1.7635E+00

3.7925E-01

-1.8843E-02

-2.6318E-03

-6.9181E-03

2.2100E-03

3.5006E+00

-1.3561E+00

3.6278E-01

-1.4376E-01

-4.0291E-02

-2.5340E-02

-1.8542E-03

4.7024E+00

2.2063E+00

-1.9711E-01

-1.4412E-01

2.5364E-01

-1.6378E-02

9.2933E-03

S10

4.3924E+00

1.2783E+00

2.8222E+00

-1.1204E-01

-1.8356E-01

-2.9911E-01

-1.8144E-01

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. Each parameter in the table is represented by a scientific notation. For example, 2.4965E-03Means 2.4965X 10^-3(ii) a -5.6139E-05 means-5.6139X 10^-5。

By substituting the above parameters into the formula:

the surface shapes of the object side surface and the image side surface of the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455 can be obtained.

In the present embodiment, z is the rise of the aspherical surface. r is the radial coordinate of the aspheric surface. And c is the aspheric vertex spherical curvature. K is a conic constant. A. the_mAre aspheric coefficients. r is_maxIs the maximum value of the radial radius coordinate. u-r/r_max。

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the first embodiment of the present application are as follows in table 4.

TABLE 4 design parameters of the non-rotationally symmetric aspheric surface of the optical lens 45 of the first embodiment

The symbols a10, a12, a14, a21, a23, a25, a27, … …, a144, a146, a150, a152, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Wherein, in the present embodiment, z is a rise parallel to the z-axis; n is the total number of polynomial coefficients in the series, Ai is the coefficient of the ith expansion polynomial, r is the radial coordinate of the aspheric surface, c is the curvature of the aspheric vertex sphere, and K is a conic constant. Polynomial coefficients not present in the tables (e.g. A)₁、A₂Etc.) are all 0.

Referring to fig. 11, fig. 11 is an imaging simulation diagram of each lens of the optical lens shown in fig. 10, in which a solid line grid is an ideal imaging grid diagram, and a grid structure formed by "X" is a schematic diagram after the optical lens 45 of the present embodiment images. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 1.6694%, and the TV distortion in the imaging range of the optical lens 4510 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

The second embodiment: referring to fig. 12, fig. 12 is a schematic structural diagram of another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are both non-rotationally symmetric aspherical surfaces. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 12 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the second embodiment of the present application are as follows in table 5.

Table 5 design parameters of optical lens 45 of the second embodiment

From the data in table 5, the design parameters of the optical lens 45 according to the second embodiment of the present application can be obtained as shown in table 6.

Table 6 optical lens 45 design parameters of the second embodiment

f1(mm)	40.980	f4(mm)	-7.619
				f2(mm)	-3.387	f5(mm)	3.639
f3(mm)	3.468	f6(mm)	-10.446
				f(mm)	4.141	\|f1/f\|	9.897
\|f2/f\|	0.818	\|f3/f\|	0.837
				\|f4/f\|	1.84	\|f5/f\|	0.879
\|f6/f\|	2.522	f2/f1	-0.0826
				f4/f3	-2.197	FOV(°)	101
f/EPD	2.05	T45/f	0.244
				ImagH(mm)	4.38	TTL(mm)	12.042
ImagH/TTL	0.364	(T23+T56)/TTL	0.075
				R6/R10	1.623	Fno	2.05

As can be seen from table 6, the field angle FOV of the optical lens 45 is 101 °, and the f-number Fno is 2.05, that is, the optical lens 45 of the present application can realize a large field angle and a large aperture, and can better satisfy the requirement of shooting. In addition. The TTL is 12.042mm, the ImagH is 4.38mm, and the ImagH/TTL is 0.364, that is, the effective pixel area projected onto the photo chip 42 through the optical lens 45 of the present embodiment is large, and the total optical length TTL of the optical lens 45 can be small, so that high imaging quality can be obtained, the length of the optical lens 45 can be small, and the optical lens can be applied to thin electronic devices such as mobile phones and tablet computers.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the second embodiment of the present application are as follows in table 7.

TABLE 7 design parameters of rotationally symmetric lenses of an optical lens 45 of the second embodiment

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the second embodiment of the present application are as follows in table 8.

TABLE 8 design parameters of non-rotationally symmetric aspheric surface of optical lens 45 of the second embodiment

Number of noodles

A10

A12

A14

A21

A23

A25

A27

A36

S11

6.525E-03

1.147E-02

6.464E-03

-6.689E-04

-1.968E-03

-1.849E-03

-6.720E-04

8.521E-06

S12

-3.495E-03

-7.210E-03

-2.938E-03

2.204E-04

5.722E-04

5.863E-04

2.813E-04

-3.646E-06

Number of noodles

A38

A40

A42

A44

A55

A57

A59

A61

S11

4.902E-05

6.281E-05

5.181E-05

1.490E-05

-1.588E-07

5.990E-08

5.538E-07

-2.992E-07

S12

-2.252E-05

-3.668E-05

-1.763E-05

-6.184E-06

1.520E-07

3.390E-07

3.248E-07

5.834E-07

Number of noodles

A63

A65

A78

A80

A82

A84

A86

A88

S11

-7.648E-08

5.918E-08

-1.639E-08

-6.353E-08

-1.728E-07

-3.377E-07

-7.119E-07

-6.650E-08

S12

-6.569E-07

-2.548E-08

-5.743E-09

2.580E-08

-9.782E-09

-2.418E-08

1.708E-07

-4.263E-08

Number of noodles

A90

A105

A107

A109

A111

A113

A115

A117

S11

7.265E-09

1.792E-09

3.672E-09

-5.627E-09

-4.867E-09

-3.145E-08

-4.606E-08

-1.307E-09

S12

-6.176E-09

6.666E-12

7.938E-10

-2.804E-10

-4.515E-09

3.340E-09

-7.152E-09

-2.388E-08

Number of noodles

A119

A136

A138

A140

A142

A144

A146

A148

S11

3.606E-10

1.754E-10

1.243E-09

5.021E-10

-1.617E-09

-1.513E-09

-8.188E-09

1.065E-08

S12

-1.050E-10

-2.789E-11

6.994E-11

-7.317E-11

-5.146E-10

-8.071E-10

7.099E-11

4.583E-10

Number of noodles

A150

A152

S11

-1.682E-09

-6.675E-11

S12

4.301E-10

-3.844E-14

The symbols a10, a12, a14, a21, a23, a25, a27, … …, a144, a146, a150, a152, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Referring to fig. 13, fig. 13 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 12. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 2.3119%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Third embodiment: referring to fig. 14, fig. 14 is a schematic structural diagram of another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 14 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the third embodiment of the present application are as follows in table 9.

Table 9 design parameters of optical lens 45 of the third embodiment

From the data in table 9, the following table 10 can be obtained as the design parameters of the optical lens 45 according to the third embodiment of the present application.

Table 10 optical lens 45 design parameters of the third embodiment

f1(mm)	52.743	f4(mm)	-8.359
				f2(mm)	-3.478	f5(mm)	3.287
f3(mm)	3.817	f6(mm)	-6.731
				f(mm)	4.21	\|f1/f\|	12.533
\|f2/f\|	0.826	\|f3/f\|	0.907
				\|f4/f\|	1.986	\|f5/f\|	0.781
\|f6/f\|	1.599	f2/f1	-0.066
				f4/f3	-2.190	FOV(°)	100
f/EPD	2.04	T45/f	0.191
				ImagH(mm)	4.39	TTL(mm)	14.623
ImagH/TTL	0.3	(T23+T56)/TTL	0.014
				R6/R10	1.519	Fno	2.04

As can be seen from table 10, the field angle FOV of the optical lens 45 is 100 °, and the f-number Fno is 2.04, that is, the optical lens 45 of the present application can realize a large field angle and a large aperture, and can better satisfy the requirement of shooting. In addition, TTL is 14.623mm, ImagH is 4.39mm, and ImagH/TTL is 0.3, that is, the effective pixel area projected onto the photo chip 42 through the optical lens 45 of the present embodiment is large, the total optical length of the optical lens 45 can be small, high imaging quality can be obtained, the length of the optical lens 45 can be small, and the present invention can be applied to thin electronic devices such as mobile phones and tablet phones.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the third embodiment of the present invention are as follows in table 11.

Table 11 design parameters of rotationally symmetric lenses of optical lens 45 according to the third embodiment

Flour mark

0.0000E+00

2.6177E-03

-7.1695E-05

0.0000E+00

6.2457E-03

-1.6474E-04

0.0000E+00

3.2414E+00

-1.0821E+00

3.2488E-01

-1.0098E-01

1.2073E-02

3.3096E-02

-3.8390E-02

3.4756E+00

-3.4977E+00

-4.5751E-01

4.2179E-01

1.5905E-01

-1.4458E-01

-1.1653E-01

2.6625E+00

-1.7365E+00

3.8310E-01

-1.6967E-02

-1.9119E-03

-8.0984E-03

4.4516E-03

3.4896E+00

-1.3727E+00

3.6406E-01

-1.4937E-01

-4.0489E-02

-2.6909E-02

-3.0597E-03

4.6950E+00

2.2273E+00

-2.0976E-01

-1.2943E-01

2.3726E-01

-8.2719E-03

1.0964E-02

S10

4.3941E+00

1.3309E+00

2.8230E+00

-1.1652E-01

-1.9823E-01

-2.9619E-01

-1.7306E-01

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the third embodiment of the present application are as follows in table 12.

TABLE 12 design parameters of non-rotationally symmetric aspheric surfaces of optical lens 45 of the third embodiment

Number of noodles

A10

A12

A14

A21

A23

A25

A27

A36

S11

6.795E-03

1.247E-02

6.503E-03

-6.325E-04

-1.873E-03

-1.691E-03

-6.457E-04

1.215E-05

S12

-2.434E-03

-6.007E-03

-2.630E-03

1.765E-04

5.598E-04

6.458E-04

2.607E-04

-4.606E-06

Number of noodles

A38

A40

A42

A44

A55

A57

A59

A61

S11

5.634E-05

6.102E-05

5.037E-05

1.805E-05

3.073E-08

1.517E-06

1.759E-06

1.192E-06

S12

-2.064E-05

-3.989E-05

-2.038E-05

-3.837E-06

6.927E-08

6.103E-07

8.443E-07

2.213E-06

Number of noodles

A63

A65

A78

A80

A82

A84

A86

A88

S11

2.025E-06

1.934E-07

-1.238E-08

4.396E-08

-5.843E-08

-1.212E-07

-4.131E-07

-3.086E-08

S12

-1.078E-06

-1.569E-07

-7.652E-10

-3.024E-08

-2.202E-08

-2.786E-08

6.549E-08

2.639E-07

Number of noodles

A90

A105

A107

A109

A111

A113

A115

A117

S11

-1.574E-08

1.840E-10

-3.620E-09

-8.794E-10

7.125E-09

-1.500E-08

3.294E-09

-1.064E-08

S12

-3.663E-09

1.260E-10

1.678E-09

-2.082E-09

-8.195E-09

1.526E-08

-2.190E-08

-4.079E-08

Number of noodles

A119

A136

A138

A140

A142

A144

A146

A148

S11

1.209E-10

1.020E-10

2.313E-10

-1.615E-09

-2.280E-09

-4.519E-09

-1.162E-08

8.950E-09

S12

-4.196E-11

-4.262E-12

2.656E-10

6.308E-11

-5.435E-10

-8.834E-10

4.989E-10

-1.659E-09

Number of noodles

A150

A152

S11

-3.307E-10

-1.327E-11

S12

1.028E-09

1.712E-12

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Referring to fig. 15, fig. 15 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 14. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 2.6506%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Fourth embodiment: referring to fig. 16, fig. 16 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 16 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the fourth embodiment of the present application are as follows in table 13.

Table 13 design parameters of optical lens 45 of the fourth embodiment

From the data in table 13, the following table 14 can be obtained as the design parameters of the optical lens 45 according to the fourth embodiment of the present application.

Table 14 optical lens 45 design parameters of the fourth embodiment

As can be seen from table 14, the field angle FOV of the optical lens 45 is 100 °, and the f-number Fno is 2.05, that is, the optical lens 45 of the present application can realize a large field angle and a large aperture, and can better satisfy the requirement of shooting. In addition, TTL is 11.8684mm, ImagH is 3.94mm, and ImagH/TTL is 0.332, that is, the effective pixel area projected onto the photo chip 42 through the optical lens 45 of the present embodiment is large, the total optical length of the optical lens 45 can be small, high imaging quality can be obtained, the length of the optical lens 45 can be small, and the present invention can be applied to thin electronic devices such as mobile phones and tablet phones.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the fourth embodiment of the present invention are as follows in table 15.

Table 15 design parameters of rotationally symmetric lens of optical lens 45 according to the fourth embodiment

Flour mark

0.0000E+00

-1.4285E+00

2.0901E-01

-4.9205E-02

2.2758E-02

4.6089E-02

-3.5650E-02

-3.2758E-02

-3.3642E+00

-5.2680E-01

4.3980E-01

1.5015E-01

-1.4959E-01

-8.5065E-02

-1.5040E-02

-1.8300E+00

3.9127E-01

6.0647E-03

1.8752E-03

-2.6337E-03

6.2850E-03

1.5888E-03

-1.1820E+00

3.1251E-01

-1.5220E-01

-4.7590E-02

-2.2504E-02

-6.7780E-04

-4.1749E-04

2.2171E+00

-2.9100E-01

-5.4245E-04

1.8737E-01

1.4373E-02

1.0547E-02

-1.6012E-02

1.8892E+00

2.7806E+00

-1.3519E-01

-1.7452E-01

-2.8777E-01

-1.7306E-01

-8.3124E-02

-1.4285E+00

2.0901E-01

-4.9205E-02

2.2758E-02

4.6089E-02

-3.5650E-02

-3.2758E-02

S10

-3.3642E+00

-5.2680E-01

4.3980E-01

1.5015E-01

-1.4959E-01

-8.5065E-02

-1.5040E-02

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the fourth embodiment of the present application are as follows in table 16.

TABLE 16 design parameters of non-rotationally symmetric aspheric surfaces of optical lens 45 according to the fourth embodiment

Number of noodles

A10

A12

A14

A21

A23

A25

A27

A36

S11

6.219E-03

1.103E-02

5.476E-03

-8.654E-04

-2.194E-03

-2.085E-03

-8.524E-04

1.063E-05

S12

-3.862E-03

-9.936E-03

-3.680E-03

1.887E-04

5.392E-04

3.472E-04

2.101E-04

-3.883E-06

Number of noodles

A38

A40

A42

A44

A55

A57

A59

A61

S11

-1.261E-05

-4.330E-05

-3.504E-05

2.095E-05

-1.558E-07

9.369E-07

1.821E-06

-9.500E-06

S12

-2.545E-05

-3.298E-05

-2.044E-05

-4.979E-06

1.523E-07

8.506E-07

3.874E-07

1.887E-06

Number of noodles

A63

A65

A78

A80

A82

A84

A86

A88

S11

1.205E-06

1.148E-07

-5.020E-08

-5.210E-08

-5.677E-08

8.061E-07

-1.642E-06

5.914E-07

S12

-8.046E-07

-3.798E-10

-1.091E-08

2.128E-08

-1.256E-08

-5.110E-08

4.262E-07

1.518E-07

Number of noodles

A90

A105

A107

A109

A111

A113

A115

A117

S11

2.990E-08

-4.684E-10

-6.861E-09

7.587E-09

6.878E-08

-8.035E-08

-1.041E-07

4.128E-08

S12

-8.082E-09

-3.077E-10

-1.761E-09

1.056E-09

-3.812E-09

6.110E-10

-5.880E-09

-5.891E-08

Number of noodles

A119

A136

A138

A140

A142

A144

A146

A148

S11

3.238E-09

1.362E-10

4.453E-10

-3.254E-09

1.455E-09

7.965E-09

-1.004E-08

3.055E-08

S12

-4.918E-10

-6.174E-11

1.533E-11

1.424E-10

-5.692E-11

-1.353E-09

3.695E-11

-5.059E-10

Number of noodles

A150

A152

S11

-1.268E-08

-2.400E-10

S12

-1.190E-09

2.102E-11

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Referring to fig. 17, fig. 17 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 16. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 2.8277%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Fifth embodiment: referring to fig. 18, fig. 18 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 18 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the fifth embodiment of the present application are as follows in table 17.

Table 17 design parameters of optical lens 45 according to the fifth embodiment

From the data in table 17, the following table 18 can be obtained as the design parameters of the optical lens 45 according to the fifth embodiment of the present application.

Table 18 optical lens 45 design parameters of the fifth embodiment

As can be seen from table 18, the field angle FOV of the optical lens 45 is 101 °. F-number Fno is 2.05, and optical lens 45 of this application can realize big visual angle, big light ring promptly, the demand that satisfies the shooting that can be better. In addition, the TTL is 12.031mm, the ImagH is 4.25mm, and the ImagH/TTL is 0.354, that is, the effective pixel area projected onto the photo chip 42 through the optical lens 45 of the present embodiment is large, the total optical length of the optical lens 45 can be small, high image quality can be obtained, the length of the optical lens 45 can be small, and the present invention can be applied to thin electronic devices such as mobile phones and tablet computers.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the fifth embodiment of the present invention are as follows in table 19.

TABLE 19 design parameters of rotationally symmetric lenses of an optical lens 45 according to the fifth embodiment

Flour mark

0.0000E+00

-4.7136E-05

-4.6581E-04

0.0000E+00

1.0699E-02

-3.3017E-04

0.0000E+00

-1.5734E+00

2.4840E-01

-9.3049E-02

-7.3303E-03

2.5035E-02

-3.1238E-02

-2.8120E-02

-3.3124E+00

-4.9982E-01

4.4351E-01

1.4851E-01

-1.4865E-01

-9.9596E-02

-2.3765E-02

-1.8541E+00

3.9796E-01

2.6770E-03

5.7753E-04

-2.0272E-03

3.9776E-03

2.3068E-03

-1.1514E+00

2.9622E-01

-1.5178E-01

-4.5098E-02

-2.3692E-02

-1.8388E-03

5.7623E-04

2.1431E+00

-2.8161E-01

-1.8436E-02

1.8813E-01

9.9322E-03

8.9805E-03

-1.9777E-02

S10

1.9797E+00

2.7760E+00

-1.2827E-01

-1.7749E-01

-2.9102E-01

-1.7835E-01

-7.0347E-02

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the fifth embodiment of the present application are as follows in table 20.

TABLE 20 design parameters of non-rotationally symmetric aspheric surfaces of optical lens 45 according to the fifth embodiment

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

In the present embodiment, z is a rise parallel to the z-axis; n is the total number of polynomial coefficients in the series, Ai is the coefficient of the ith expansion polynomial, r is the radial coordinate of the aspheric surface, c is the curvature of the aspheric vertex sphere, and K is a conic constant. Polynomial coefficients not present in the tables (e.g. A)₁、A₂Etc.) is 0.

Referring to fig. 19, fig. 19 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 18. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 2.5481%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Sixth embodiment: referring to fig. 20, fig. 20 is a schematic structural diagram of another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 20 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the sixth embodiment of the present application are as follows in table 21.

Table 21 design parameters of optical lens 45 according to the sixth embodiment

From the data in table 21, the design parameters of the optical lens 45 according to the sixth embodiment of the present application can be obtained as in table 22.

Table 22 optical lens 45 design parameters of the sixth embodiment

f1(mm)	46.254	f4(mm)	-4.222
				f2(mm)	-16.111	f5(mm)	3.066
f3(mm)	3.527	f6(mm)	-10.494
				f(mm)	3.646	\|f1/f\|	12.685
\|f2/f\|	4.419	\|f3/f\|	0.967
				\|f4/f\|	1.158	\|f5/f\|	0.840
\|f6/f\|	2.878	f2/f1	-0.348
				f4/f3	-1.254	FOV(°)	112
f/EPD	2.23	T45/f	0.136
				ImagH(mm)	5.00	TTL(mm)	11.2236
ImagH/TTL	0.445	(T23+T56)/TTL	0.026
				R6/R10	1.441	Fno	2.23

As can be seen from table 22, the field angle FOV of the optical lens 45 is 112 °. The f-number Fno is 2.23, namely, the optical lens 45 of the present application can realize a large viewing angle and a large aperture, and can better meet the requirements of shooting. In the present embodiment, TTL is 11.2236mm, ImagH is 5.00mm, and ImagH/TTL is 0.445, that is, the effective pixel area projected onto the photosensitive chip 42 through the optical lens 45 of the present embodiment is large, and the total optical length of the optical lens 45 can be small, so that high imaging quality can be obtained, and the length of the optical lens 45 can be small, and the present embodiment can be applied to thin electronic devices such as mobile phones and tablets.

The design parameters of the aspherical coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the sixth embodiment of the present invention are as follows in table 23.

TABLE 23 design parameters of rotationally symmetric lenses of an optical lens 45 according to the sixth embodiment

Flour mark

1.48E-03

1.75E-05

0.00E+00

-7.23E-03

-5.09E-04

0.00E+00

3.10E+00

2.95E-02

1.74E-01

-3.88E-02

-1.67E-02

-1.64E-02

-7.39E-04

4.91E+01

9.61E+00

-3.26E+00

-2.53E+00

-4.85E-01

-1.57E-02

1.95E-02

7.03E-03

-3.31E-02

7.80E-03

3.08E-03

5.62E-04

-7.63E-04

-5.00E-04

-5.93E-01

2.00E-02

-2.83E-02

-5.89E-03

-5.27E-03

-1.15E-03

-3.86E-04

-7.55E-01

1.57E-01

-1.25E-02

-7.72E-04

-2.30E-03

-3.92E-05

5.85E-04

-6.02E-01

1.63E-01

-1.84E-02

3.80E-03

-2.96E-03

-2.58E-06

1.67E-04

3.69E-01

1.25E-01

-2.22E-02

-4.52E-04

-1.58E-03

1.21E-03

-2.26E-04

S10

-4.50E-01

3.08E-01

-4.72E-03

-9.14E-03

-3.34E-03

1.87E-03

5.44E-04

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the sixth embodiment of the present application are as follows in table 24.

TABLE 24 design parameters of non-rotationally symmetric aspheric surface of optical lens 45 according to the sixth embodiment

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Wherein, in the present embodiment, z is a rise parallel to the z-axis; n is the total number of polynomial coefficients in the series, Ai is the coefficient of the ith expansion polynomial, r is the aspheric surfaceC is the aspheric vertex spherical curvature, and K is the conic constant. Polynomial coefficients not present in the tables (e.g. A)₁、A₂Etc.) is 0.

Referring to fig. 21, fig. 21 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 20. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 1.5569%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

The seventh embodiment: referring to fig. 22, fig. 22 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 22 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the seventh embodiment of the present application are as follows in table 25.

Table 25 design parameters of optical lens 45 according to the seventh embodiment

From the data in table 25, the design parameters of the optical lens 45 according to the seventh embodiment of the present application can be obtained as in table 26.

Table 26 optical lens 45 design parameters of the seventh embodiment

f1(mm)	38.003	f4(mm)	-7.614
				f2(mm)	-3.126	f5(mm)	3.332
f3(mm)	4.043	f6(mm)	-7.362
				f(mm)	4.092	\|f1/f\|	9.287
\|f2/f\|	0.763	\|f3/f\|	0.988
				\|f4/f\|	1.860	\|f5/f\|	0.814
\|f6/f\|	1.799	f2/f1	-0.082
				f4/f3	-1.883	FOV(°)	113
f/EPD	2.05	T45/f	0.164
				ImagH(mm)	-3.190	TTL(mm)	12.2892
ImagH/TTL	-0.260	(T23+T56)/TTL	0.104
				R6/R10	1.582	Fno	2.05

As can be seen from table 26, the field angle FOV of the optical lens 45 is 113 ° and the f-number Fno is 2.23, that is, the optical lens 45 of the present application can achieve a large field angle and a large aperture, and can better satisfy the requirements of shooting. In the present embodiment, TTL is 12.2892mm, ImagH is-3.190 mm, and ImagH/TTL is-0.260, that is, the total optical length of the optical lens 45 can be small while the effective pixel area projected onto the photosensitive chip 42 through the optical lens 45 of the present embodiment is large, so that high image quality can be obtained, the length of the optical lens 45 can be small, and the present embodiment can be applied to thin electronic devices such as mobile phones and tablets.

The following table 27 shows the design parameters of the aspherical coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the seventh embodiment of the present invention.

TABLE 27 design parameters of rotationally symmetric lenses of an optical lens 45 according to the seventh embodiment

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the seventh embodiment of the present application are as follows in table 28.

TABLE 28 design parameters of non-rotationally symmetric aspherical surface of optical lens 45 according to the seventh embodiment

Number of noodles

A10

A12

A14

A21

A23

A25

A27

A36

S11

6.668E-03

1.175E-02

6.311E-03

-6.180E-04

-1.804E-03

-1.676E-03

-5.758E-04

1.069E-05

S12

-4.483E-03

-8.941E-03

-3.364E-03

2.009E-04

6.978E-04

4.358E-04

2.009E-04

-3.719E-06

Number of noodles

A38

A40

A42

A44

A55

A57

A59

A61

S11

5.853E-05

7.592E-05

3.975E-05

1.891E-05

-2.511E-08

6.845E-07

1.918E-06

2.172E-06

S12

-2.829E-05

-3.398E-05

-2.620E-05

-3.295E-06

8.833E-08

4.089E-07

6.957E-07

1.611E-06

Number of noodles

A63

A65

A78

A80

A82

A84

A86

A88

S11

5.062E-07

8.016E-08

-1.636E-08

-1.660E-08

-8.334E-08

-2.178E-07

-2.625E-07

5.546E-10

S12

-1.131E-06

1.002E-08

-4.116E-09

2.446E-08

-2.125E-08

2.865E-08

1.008E-07

-1.885E-07

Number of noodles

A90

A105

A107

A109

A111

A113

A115

A117

S11

-1.661E-08

8.853E-10

1.714E-09

-1.488E-09

-1.370E-08

-9.986E-09

-5.636E-08

9.597E-10

S12

-1.175E-10

4.486E-11

1.526E-09

-1.464E-09

-2.204E-09

3.765E-09

-1.963E-09

-1.855E-08

Number of noodles

A119

A136

A138

A140

A142

A144

A146

A148

S11

2.655E-10

1.914E-11

1.235E-10

1.708E-10

-6.540E-10

-8.277E-10

-4.475E-09

-9.490E-09

S12

3.343E-11

-4.311E-12

1.422E-10

-2.174E-10

-3.579E-10

-1.593E-10

-4.155E-11

4.528E-10

Number of noodles

A150

A152

S11

-7.283E-10

-1.660E-12

S12

8.721E-10

-3.908E-12

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Referring to fig. 23, fig. 23 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 22. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 4.8350%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

The eighth embodiment: referring to fig. 24, fig. 24 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has positive optical power.

In this embodiment, the object side surface 4561 and the image side surface 4562 of the sixth lens 456 are aspheric. The other lenses are rotationally symmetric lenses (that is, the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 24 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the eighth embodiment of the present application are as follows in table 29.

TABLE 29 design parameters of optical lens 45 of the eighth embodiment

From the data in table 29, the following table 30 can be obtained as the design parameters of the optical lens 45 according to the eighth embodiment of the present application.

Table 30 optical lens 45 design parameters of the eighth embodiment

f1(mm)	450.799	f4(mm)	-3.831
				f2(mm)	-14.904	f5(mm)	3.126
f3(mm)	3.365	f6(mm)	90.409
				f(mm)	3.234	\|f1/f\|	139.386
\|f2/f\|	4.608	\|f3/f\|	1.041
				\|f4/f\|	1.185	\|f5/f\|	0.967
\|f6/f\|	27.954	f2/f1	-0.033
				f4/f3	-1.138	FOV(°)	130
f/EPD	2.24	T45/f	0.156
				ImagH(mm)	4.995	TTL(mm)	11.1277
ImagH/TTL	0.445	(T23+T56)/TTL	0.031
				R6/R10	1.359	Fno	2.24

As can be seen from table 30, the field angle FOV of the optical lens 45 is 130 °, and the f-number Fno is 2.23, that is, the optical lens 45 of the present application can achieve a large field angle and a large aperture, and can better satisfy the requirement of shooting. In the present embodiment, TTL is 11.1277mm, ImagH is 4.995mm, and ImagH/TTL is 0.445, that is, while the effective pixel area projected onto the photosensitive chip 42 by the optical lens 45 of the present embodiment is large, the total optical length of the optical lens 45 can be small, so that high imaging quality can be obtained, and the length of the optical lens 45 can be small, and the present embodiment can be applied to thin electronic devices such as mobile phones and tablets.

The design parameters of the aspheric coefficients of the rotationally symmetric lenses (i.e., the first lens element 451, the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the eighth embodiment of the present invention are as follows in table 31.

TABLE 31 design parameters of rotationally symmetric lenses of an optical lens 45 according to the eighth embodiment

Flour mark

1.4762E-03

1.7478E-05

0.0000E+00

-7.2268E-03

-5.0910E-04

0.0000E+00

3.0997E+00

2.9531E-02

1.7439E-01

-3.8770E-02

-1.6703E-02

-1.6440E-02

-7.3926E-04

4.9057E+01

9.6124E+00

-3.2636E+00

-2.5320E+0

-4.8540E-01

-1.5692E-02

1.9548E-02

1.2486E-02

-3.2960E-02

8.6854E-03

2.8498E-03

1.5030E-03

-6.6726E-04

-3.4940E-04

-5.9267E-01

2.7938E-02

-2.7908E-02

-6.2007E-03

-6.4321E-03

-1.9555E-03

-5.7225E-04

-7.5223E-01

1.5932E-01

-8.9152E-03

9.3672E-04

-6.8548E-04

-4.4212E-04

1.4436E-03

-6.0014E-01

1.6298E-01

-1.8353E-02

4.4839E-03

-1.9129E-03

-1.1461E-03

2.2716E-04

3.7758E-01

1.2345E-01

-2.2225E-02

2.8058E-04

-1.5228E-04

2.2063E-04

-1.5353E-04

S10

-4.5841E-01

3.2003E-01

-2.1905E-03

-1.7138E-03

8.7588E-05

9.4878E-04

4.7193E-03

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

In addition, the design parameters of the non-rotationally symmetric aspheric coefficients of the sixth lens 456 according to the eighth embodiment of the present application are as follows in table 32.

TABLE 32 design parameters of non-rotationally symmetric aspheric surface of optical lens 45 according to the eighth embodiment

Number of noodles

A10

A12

A14

A21

A23

A25

A27

A36

S11

2.682E-02

3.993E-02

2.540E-02

-4.674E-03

-9.383E-03

-9.888E-03

-4.116E-03

4.235E-04

S12

-3.024E-02

-5.097E-02

-2.806E-02

7.551E-03

2.109E-02

2.199E-02

7.350E-03

-1.216E-03

Number of noodles

A38

A40

A42

A44

A55

A57

A59

A61

S11

0.000E+00

1.409E-03

2.397E-03

1.170E-03

4.005E-04

-3.713E-05

-2.216E-04

-4.414E-04

S12

0.000E+00

-4.917E-03

-7.495E-03

-4.840E-03

-1.223E-03

1.283E-04

6.486E-04

1.282E-03

Number of noodles

A63

A65

A78

A80

A82

A84

A86

A88

S11

-4.218E-04

-2.316E-04

-4.316E-05

3.168E-06

1.923E-05

5.004E-05

6.872E-05

4.909E-05

S12

1.286E-03

6.524E-04

1.279E-04

-7.854E-06

-4.721E-05

-1.180E-04

-1.584E-04

-1.153E-04

Number of noodles

A90

A105

A107

A109

A111

A113

A115

A117

S11

2.359E-05

3.129E-06

-1.355E-07

-8.047E-07

-2.100E-06

-4.761E-06

-3.869E-06

-2.884E-06

S12

-4.589E-05

-8.014E-06

2.568E-07

1.797E-06

5.426E-06

8.817E-06

9.076E-06

5.497E-06

Number of noodles

A119

A136

A138

A140

A142

A144

A146

A148

S11

5.609E-07

-1.162E-07

5.605E-10

1.221E-08

9.482E-09

8.463E-08

6.482E-08

7.536E-08

S12

1.551E-06

2.551E-07

-3.746E-09

-3.127E-08

-8.672E-08

-1.967E-07

-2.493E-07

-1.759E-07

Number of noodles

A150

A152

S11

3.248E-08

-1.236E-07

S12

-1.279E-07

-3.314E-08

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the sixth lens 456 according to the present embodiment can be designed.

Wherein, in the present embodiment, z is a rise parallel to the z-axis; n is the total number of polynomial coefficients in the series,ai is the coefficient of the expansion polynomial of the ith term, r is the radial coordinate of the aspheric surface, c is the curvature of the aspheric surface vertex sphere, and K is a conic constant. Polynomial coefficients not present in the tables (e.g. A)₁、A₂Etc.) is 0.

Referring to fig. 25, fig. 25 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 24. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 3.4559%, and the TV distortion in the imaging range of the optical lens 45 is small. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion. The sixth lens 456 has a "one-object-multiple-use" function.

Ninth embodiment: referring to fig. 26, fig. 26 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4511 and the image side surface 4512 of the first lens element 451 are both non-rotationally symmetric aspherical surfaces. The other lenses are rotationally symmetric lenses (that is, the second lens 452, the third lens 453, the fourth lens 454, the fifth lens 455, and the sixth lens 456 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces. Fig. 26 illustrates the optical axis direction of the optical lens 45 by a solid line with an arrow. Further, the direction of the arrow represents pointing from the object side to the image side.

The design parameters of the optical lens 45 according to the ninth embodiment of the present application are as follows in table 33.

TABLE 33 design parameters of optical lens 45 of the ninth embodiment

From the data in table 33, the following table 34 can be obtained as the design parameters of the optical lens 45 according to the ninth embodiment of the present application.

Table 34 optical lens 45 design parameters of the ninth embodiment

As can be seen from table 34, the field angle FOV of the optical lens 45 is 125 ° and the f-number Fno is 2.23, that is, the optical lens 45 of the present application can achieve a large field angle and a large aperture, and can better satisfy the requirements of shooting. In the present embodiment, TTL is 8.0mm, ImagH is 4.89mm, and ImagH/TTL is 0.63, that is, the effective pixel area projected onto the photosensitive chip 42 through the optical lens 45 of the present embodiment is large, and the total optical length of the optical lens 45 can be small, so that high imaging quality can be obtained, and the length of the optical lens 45 can be small, and the present embodiment can be applied to thin electronic devices such as mobile phones and tablets.

The following table 35 shows design parameters of aspheric coefficients of the rotationally symmetric lenses (i.e., the second lens element 452, the third lens element 453, the fourth lens element 454, the fifth lens element 455, and the sixth lens element 456) according to the ninth embodiment of the present invention.

TABLE 35 design parameters of rotationally symmetric lenses of an optical lens 45 according to the ninth embodiment

Flour mark

0.0000E+00

-1.6177E+00

1.0453E+00

2.6887E-01

3.5938E-02

6.3268E-02

-2.1583E-02

-2.2346E-02

-2.8137E+00

-1.6619E-01

2.1352E-01

7.9381E-02

-9.4571E-02

-5.4848E-02

-1.3948E-02

-1.1177E+00

2.7400E-01

-3.6477E-02

-2.7589E-03

-2.5818E-03

-1.3641E-03

1.7403E-05

-9.6010E-01

2.2340E-01

-8.7433E-02

-1.8932E-02

-2.1134E-02

-5.1406E-03

-1.7481E-03

2.8866E-01

-1.3119E-01

-1.0555E-01

2.5540E-01

-6.2301E-02

-1.0146E-01

-4.9388E-02

S10

8.9235E-01

2.0611E+00

-1.8778E-01

-1.5534E-01

-2.0511E-01

-1.7145E-01

-7.3918E-02

S11

1.3487E-02

-5.7844E-04

9.6591E-06

-2.5138E-08

-1.3582E-09

2.3184E-11

-2.5945E-13

S12

-2.9340E-02

5.0352E-04

-4.5837E-06

-3.0960E-10

6.1511E-10

5.4947E-12

-2.2045E-13

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

the surface shapes of the object-side surface and the image-side surface of the second lens 452, the third lens 453, the fourth lens 454, the fifth lens 455, and the sixth lens 456 can be designed.

In addition, the design parameters of the non-rotationally symmetric aspherical surface coefficients of the first lens 451 according to the ninth embodiment of the present application are as follows in table 36.

TABLE 36 design parameters of non-rotationally symmetric aspheric surfaces of optical lens 45 of the ninth embodiment

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the shape of the object-side surface and the image-side surface of the first lens element 451 according to the present embodiment can be designed.

Referring to fig. 27, fig. 27 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 26. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. Specifically, in the present embodiment, the maximum value TDT of the TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 1.4771%, and the TV distortion in the imaging range of the optical lens 45 is small. It can be understood that by disposing the object side surface 4511 and the image side surface 4512 of the first lens 451 as non-rotationally symmetrical aspheric surfaces, the problem of significant distortion due to a large field of view when light reflected by a subject to be imaged enters from a lens close to the object side can be corrected, and the correction effect can be achieved more easily.

Tenth embodiment: referring to fig. 28, fig. 28 is a schematic structural diagram of still another embodiment of a lens of the optical lens system shown in fig. 5. In the present embodiment, the optical lens 45 has six lenses. The optical lens 45 includes a first lens element 451, a second lens element 452, a third lens element 453, a fourth lens element 454, a fifth lens element 455, and a sixth lens element 456 arranged in order from an object side to an image side. The first lens 451, the third lens 453, and the fifth lens 455 all have positive refractive power. The second lens 452 and the fourth lens 454 each have negative power. The sixth lens 456 has a negative power.

In this embodiment, the object side surface 4511 and the image side surface 4512 of the first lens element 451 are both non-rotationally symmetric aspherical surfaces. The object side surface 4561 and the image side surface 4562 of the sixth lens 456 are both non-rotationally symmetric aspherical surfaces. The other lenses are rotationally symmetric lenses (i.e., the second lens element 452, the third lens element 453, the fourth lens element 454 and the fifth lens element 455 are rotationally symmetric lenses), and both the object-side surface and the image-side surface of each rotationally symmetric lens are rotationally symmetric aspheric surfaces.

The design parameters of the optical lens 45 according to the tenth embodiment of the present application are as follows in table 37.

Table 37 design parameters of optical lens 45 according to the tenth embodiment

From the data in table 38, the following table 38 can be obtained as the design parameters of the optical lens 45 according to the tenth embodiment of the present application.

Table 38 design parameters of optical lens 45 of the tenth embodiment

f1(mm)	307.23	f4(mm)	-4.44
				f2(mm)	-13.5	f5(mm)	2.04
f3(mm)	3.14	f6(mm)	-7.96
				f(mm)	2.54	\|f1/f\|	120.967
\|f2/f\|	5.314	\|f3/f\|	1.236
				\|f4/f\|	1.748	\|f5/f\|	0.804
\|f6/f\|	3.134	f2/f1	-0.044
				f4/f3	-1.414	FOV(°)	135
f/EPD	2.3	T45/f	0.199
				ImagH(mm)	4.36	TTL(mm)	8.1
ImagH/TTL	0.538	(T23+T56)/TTL	0.059
				R6/R10	1.929	Fno	2.3

As can be seen from table 38, the field angle FOV of the optical lens 45 is 135 °, and the f-number Fno is 2.3, that is, the optical lens 45 of the present application can achieve a large field angle and a large aperture, and can better satisfy the requirement of shooting. In the present embodiment, TTL is 8.1mm, ImagH is 4.36mm, and ImagH/TTL is 0.538, that is, the effective pixel area projected onto the photosensitive chip 42 through the optical lens 45 of the present embodiment is large, and the total optical length of the optical lens 45 can be small, so that high imaging quality can be obtained, and the length of the optical lens 45 can be small, and the present embodiment can be applied to thin electronic devices such as mobile phones and tablets.

The following table 39 shows design parameters of aspheric coefficients of the rotationally symmetric lenses (i.e., the second lens element 452, the third lens element 453, the fourth lens element 454, and the fifth lens element 455) according to the tenth embodiment of the present invention.

Table 39 design parameters of rotationally symmetric lens of optical lens 45 according to the tenth embodiment

Flour mark

-1.00E-04

7.83E-04

-6.92E-05

3.80E-05

1.04E-06

4.63E-06

-3.31E-05

-1.78E-06

-2.68E-04

7.41E-04

-1.10E-04

-2.31E-06

-3.78E-05

1.35E-05

-1.64E+00

1.05E+00

2.67E-01

3.65E-02

6.31E-02

-2.17E-02

-2.20E-02

-2.82E+00

-1.60E-01

2.09E-01

8.10E-02

-9.52E-02

-5.50E-02

-1.33E-02

-1.12E+00

2.74E-01

-3.60E-02

-2.73E-03

-2.53E-03

-1.49E-03

5.66E-05

-9.60E-01

2.23E-01

-8.79E-02

-1.84E-02

-2.14E-02

-5.30E-03

-1.59E-03

2.90E-01

-1.32E-01

-1.04E-01

2.55E-01

-6.16E-02

-1.03E-01

-4.89E-02

S10

8.90E-01

2.06E+00

-1.90E-01

-1.55E-01

-2.05E-01

-1.73E-01

-7.09E-02

Here, symbols such as a0, a1, a2, A3, a4, a5, and a6 denote aspheric coefficients. By substituting the above parameters into the formula:

the surface shapes of the object side surface and the image side surface of the second lens 452, the third lens 453, the fourth lens 454, and the fifth lens 455 can be designed.

The design parameters of the non-rotationally symmetric aspheric coefficients of the first lens 451 and the sixth lens 456 according to the tenth embodiment of the present invention are shown in table 40 below.

TABLE 40 design parameters of non-rotationally symmetric aspheric surfaces of optical lens 45 according to the tenth embodiment

The symbols a10, a12, a14, a21, a23, a25, a27, and the like represent polynomial coefficients. By substituting the above parameters into the formula:

the object side surface 4511 and the image side surface 4512 of the first lens 451 and the object side surface 4561 and the image side surface 4562 of the sixth lens 456 according to the present embodiment can be designed and obtained.

Referring to fig. 29, fig. 29 is a simulation diagram of imaging of each lens of the optical lens shown in fig. 28. The solid line grid is an ideal imaging grid diagram, and the grid structure formed by the "X" is a schematic diagram after the optical lens 45 of the present embodiment is imaged. As is clear from the figure, the imaging by the optical lens 45 of the present embodiment is substantially the same as the ideal imaging, and the TV distortion in the imaging range of the optical lens 45 is small. The maximum value TDT of TV distortion in the imaging range of the optical lens 45 satisfies | TDT | ═ 1.8%, and TV distortion in the imaging range of the optical lens 45 is small. It can be understood that by disposing the object side surface 4511 and the image side surface 4512 of the first lens 451 as non-rotationally symmetrical aspheric surfaces, the problem of significant distortion due to a large field of view when light reflected by a subject to be imaged enters from a lens close to the object side can be corrected, and the correction effect can be achieved more easily. In addition, by disposing the object side surface 4561 and the image side surface 4562 of the sixth lens 456 as non-rotationally symmetrical aspheric surfaces, the sixth lens 456 can correct not only curvature of field and astigmatism imaged by the optical lens 45 but also distortion.

In each of the above embodiments, the first lens element 451, the third lens element 453, and the fifth lens element 455 are provided to have positive refractive power, the second lens element 452 and the fourth lens element 454 are provided to have negative refractive power, and the sixth lens element 456 is provided to have positive refractive power or negative refractive power, so that the angle of view of the optical lens 45 can be greatly increased while the optical lens 45 can achieve good image quality, and an ultra-wide angle setting of the optical lens 45 can be achieved.

In addition, as the angle of view of the optical lens increases, the imaging distortion of the optical lens becomes more pronounced. For example, when the angle of view of the optical lens reaches 100 °, the imaging distortion of the optical lens is already greater than 10%. And for the ultra-wide angle setting of the optical lens, the imaging distortion of the optical lens is more obvious, and the imaging quality is worse. In this application, through set up at least one non-rotational symmetry's aspheric surface in the lens of the optical lens 45 who realizes the super wide angle design to improve optical system's design degree of freedom, and can utilize free region's asymmetry, optimize optical lens's imaging quality corrects optical lens's distortion, and then guarantees optical lens has better imaging quality.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

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