阅读说明：本技术 光学成像镜头 (Optical imaging lens ) 是由 张加欣 陈雁斌 陈白娜 于 2019-11-14 设计创作，主要内容包括：本发明提供一种光学成像镜头,其从物侧至像侧依序包括第一、第二、第三、第四、第五、第六及第七透镜。本发明透过控制各透镜的凹凸曲面排列,并在符合(EFL+ALT)/D67≦4.800的限制之下,达到缩短光学成像镜头系统长度的同时有良好的成像质量的功效。(The invention provides an optical imaging lens which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side. The invention achieves the effects of shortening the length of the optical imaging lens system and simultaneously achieving good imaging quality by controlling the concave-convex curved surface arrangement of each lens and meeting the limit that (EFL + ALT)/D67 is less than or equal to 4.800.)

1. An optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side along an optical axis, wherein the first lens to the seventh lens respectively comprise an object side surface facing the object side and allowing imaging light to pass through and an image side surface facing the image side and allowing the imaging light to pass through, and the first lens to the seventh lens respectively comprise an object side surface facing the object side and allowing the imaging light to pass through and an image side surface facing the image side and allowing the imaging light to pass through, wherein the first lens, the second lens, the third

The first lens element has positive refractive index;

the third lens element has positive refractive index, and a circumferential region of the object-side surface of the third lens element is convex;

an optical axis region of the image side surface of the fourth lens is a convex surface;

an optical axis region of the object side surface of the sixth lens element is a concave surface;

an optical axis region of the object side surface of the seventh lens is a concave surface; and is

The optical imaging lens only has the seven lenses and meets the condition that (EFL + ALT)/D67 is less than or equal to 4.800;

EFL represents a system focal length of the optical imaging lens, ALT represents a sum of seven lens thicknesses of the first lens element to the seventh lens element on the optical axis, and D67 represents a distance on the optical axis from the object-side surface of the sixth lens element to the image-side surface of the seventh lens element.

2. An optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side along an optical axis, wherein the first lens to the sixth lens respectively comprise an object side surface facing the object side and allowing imaging light to pass through and an image side surface facing the image side and allowing the imaging light to pass through, and the first lens to the sixth lens respectively comprise an object side surface facing the object side and allowing the imaging light to pass through and an image side surface facing the image side and allowing the imaging light to pass through, wherein the first lens, the second lens, the third

The third lens element has positive refractive index, and a circumferential region of the object-side surface of the third lens element is convex;

a circumferential area of the object-side surface of the fourth lens element is concave, and an optical axis area of the image-side surface of the fourth lens element is convex;

an optical axis region of the object side surface of the sixth lens element is a concave surface;

an optical axis region of the object side surface of the seventh lens is a concave surface;

the optical imaging lens only has the seven lenses and meets the condition that (EFL + ALT)/D67 is less than or equal to 4.800;

EFL represents a system focal length of the optical imaging lens, ALT represents a sum of seven lens thicknesses of the first lens element to the seventh lens element on the optical axis, and D67 represents a distance on the optical axis from the object-side surface of the sixth lens element to the image-side surface of the seventh lens element.

3. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T5+ G56+ T6)/T1 ≦ 2.500, T5 representing a thickness of the fifth lens on the optical axis, G56 representing a distance from the image-side surface of the fifth lens to the object-side surface of the sixth lens on the optical axis, T6 representing a thickness of the sixth lens on the optical axis, and T1 representing a thickness of the first lens on the optical axis.

4. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies EFL/(T1+ G12+ T2) ≧ 4.500, T1 represents a thickness of the first lens on the optical axis, G12 represents a distance from the image-side surface of the first lens to the object-side surface of the second lens on the optical axis, and T2 represents a thickness of the second lens on the optical axis.

5. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T3+ AAG)/T4 ≧ 5.500, T3 represents a thickness of the third lens on the optical axis, AAG represents a sum of six air gaps of the first lens to the seventh lens on the optical axis, and T4 represents a thickness of the fourth lens on the optical axis.

6. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T3+ T4)/T6 ≦ 1.800, T3 represents a thickness of the third lens element on the optical axis, T4 represents a thickness of the fourth lens element on the optical axis, and T6 represents a thickness of the sixth lens element on the optical axis.

7. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies AAG/(G12+ G23+ G34) ≧ 2.800, AAG representing a sum of six air gaps on the optical axis from the first lens to the seventh lens, G12 representing a distance on the optical axis from the image-side surface of the first lens to the object-side surface of the second lens, G23 representing a distance on the optical axis from the image-side surface of the second lens to the object-side surface of the third lens, G34 representing a distance on the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens.

8. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T1+ T5)/G34 ≦ 3.800, T1 represents a thickness of the first lens element on the optical axis, T5 represents a thickness of the fifth lens element on the optical axis, and G34 represents a distance from the image-side surface of the third lens element to the object-side surface of the fourth lens element on the optical axis.

9. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (G12+ T6)/(G23+ G45) ≦ 2.500, G12 representing a distance on the optical axis from the image-side surface of the first lens to the object-side surface of the second lens, T6 representing a thickness on the optical axis of the sixth lens, G23 representing a distance on the optical axis from the image-side surface of the second lens to the object-side surface of the third lens, and G45 representing a distance on the optical axis from the image-side surface of the fourth lens to the object-side surface of the fifth lens.

10. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T3+ T4+ AAG)/BFL ≦ 4.800, T3 represents a thickness of the third lens on the optical axis, T4 represents a thickness of the fourth lens on the optical axis, AAG represents a sum of six air gaps of the first lens to the seventh lens on the optical axis, and BFL represents a distance of the image-side surface of the seventh lens to an imaging surface on the optical axis.

11. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (EFL + T5)/AAG ≧ 1.800, T5 represents a thickness of the fifth lens on the optical axis, and AAG represents a sum of six air gaps of the first lens to the seventh lens on the optical axis.

12. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T4+ G45+ T5)/T2 ≦ 5.000, T4 representing a thickness of the fourth lens on the optical axis, G45 representing a distance from the image-side surface of the fourth lens to the object-side surface of the fifth lens on the optical axis, T5 representing a thickness of the fifth lens on the optical axis, and T2 representing a thickness of the second lens on the optical axis.

13. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies TTL/(T1+ T5+ T6+ T7) ≦ 3.800, TTL representing a distance from the object side of the first lens to an imaging plane on the optical axis, T1 representing a thickness of the first lens on the optical axis, T5 representing a thickness of the fifth lens on the optical axis, T6 representing a thickness of the sixth lens on the optical axis, and T7 representing a thickness of the seventh lens on the optical axis.

14. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies ALT/(T1+ G45) ≦ 4.100, T1 represents a thickness of the first lens on the optical axis, and G45 represents a distance from the image-side surface of the fourth lens to the object-side surface of the fifth lens on the optical axis.

15. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (G34+ T6)/(G12+ T5) ≧ 2.500, G34 represents a distance on the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens, T6 represents a thickness on the optical axis of the sixth lens, G12 represents a distance on the optical axis from the image-side surface of the first lens to the object-side surface of the second lens, and T5 represents a thickness on the optical axis of the fifth lens.

16. The optical imaging lens of claim 1 or 2, wherein TL/(G34+ T4+ G45+ G56) ≦ 5.000, TL representing a distance on the optical axis from the object-side surface of the first lens to the image-side surface of the seventh lens, G34 representing a distance on the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens, T4 representing a thickness of the fourth lens on the optical axis, G45 representing a distance on the optical axis from the image-side surface of the fourth lens to the object-side surface of the fifth lens, and G56 representing a distance on the optical axis from the image-side surface of the fifth lens to the object-side surface of the sixth lens.

17. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies (T2+ T7)/G45 ≦ 5.000, T2 represents a thickness of the second lens element on the optical axis, T7 represents a thickness of the seventh lens element on the optical axis, and G45 represents a distance from the image-side surface of the fourth lens element to the object-side surface of the fifth lens element on the optical axis.

18. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies EFL/BFL ≧ 4.500, BFL representing a distance on the optical axis from the image-side surface of the seventh lens to an imaging surface.

19. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies T6/(G12+ T5) ≧ 1.500, T6 represents a thickness of the sixth lens element on the optical axis, G12 represents a distance from the image-side surface of the first lens element to the object-side surface of the second lens element on the optical axis, and T5 represents a thickness of the fifth lens element on the optical axis.

20. The optical imaging lens of claim 1 or 2, wherein the optical imaging lens further satisfies AAG/(T1+ T2) ≦ 4.000, AAG representing a sum of six air gaps of the first lens to the seventh lens on the optical axis, T1 representing a thickness of the first lens on the optical axis, and T2 representing a thickness of the second lens on the optical axis.

Technical Field

The invention belongs to the field of optical imaging, and particularly relates to an optical imaging lens.

Background

In recent years, optical imaging lenses have been developed, and in addition to the requirement of being light, thin, short, and small, it is also increasingly important to improve the imaging quality of the lenses, such as aberration and chromatic aberration. However, in order to meet the requirement, increasing the number of optical lenses in the optical imaging lens increases the distance from the object-side surface of the first lens to the imaging surface on the optical axis, which is not favorable for the thinning of mobile phones and digital cameras.

Therefore, it has been a development goal to provide an optical imaging lens that is light, thin, short, and good in imaging quality. In addition, a small aperture value is beneficial to increasing the luminous flux, a large field angle is also a market trend, and how to reduce the length of the optical imaging lens system to pursue the light, thin, small and small lens and design the optical imaging lens with a small aperture value and a large field angle is also a major research and development point.

Disclosure of Invention

An object of the present invention is to provide an optical imaging lens system with a reduced length, a reduced aperture value and/or an enlarged field angle under a good optical performance.

According to the present invention, an optical imaging lens includes seven lens elements along an optical axis from an object side to an image side, and includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element in sequence, wherein the first lens element to the seventh lens element each include an object side surface facing the object side and passing imaging light therethrough and an image side surface facing the image side and passing imaging light therethrough.

For convenience in representing the parameters of the present invention, the following are defined in the specification and drawings: t1 represents a thickness of the first lens on an optical axis, G12 represents a distance on the optical axis from an image-side surface of the first lens to an object-side surface of the second lens, T2 represents a thickness on the optical axis of the second lens, G23 represents a distance on the optical axis from the image-side surface of the second lens to an object-side surface of the third lens, T3 represents a thickness on the optical axis of the third lens, G34 represents a distance on the optical axis from the image-side surface of the third lens to an object-side surface of the fourth lens, T4 represents a thickness on the optical axis of the fourth lens, G45 represents a distance on the optical axis from the image-side surface of the fourth lens to an object-side surface of the fifth lens, T5 represents a thickness on the optical axis of the fifth lens, G56 represents a distance on the optical axis from the image-side surface of the fifth lens to the object-side surface of the sixth lens, T6 represents a thickness on the optical axis of the sixth lens, G67 represents a distance on the image-, T7 represents the thickness of the seventh lens on the optical axis, G7F represents the air gap from the seventh lens to the filter on the optical axis, TTF represents the thickness of the filter on the optical axis, GFP represents the air gap from the filter to the imaging plane on the optical axis, f1 represents the focal length of the first lens, f2 represents the focal length of the second lens, f3 represents the focal length of the third lens, f4 represents the focal length of the fourth lens, f5 represents the focal length of the fifth lens, f6 represents the focal length of the sixth lens, f7 represents the focal length of the seventh lens, n1 represents the refractive index of the first lens, n2 represents the refractive index of the second lens, n3 represents the refractive index of the third lens, n4 represents the refractive index of the fourth lens, n5 represents the refractive index of the fifth lens, n6 represents the refractive index of the sixth lens, n7 represents the refractive index of the seventh lens, V1 represents the abbe number of the first lens, V2 represents the abbe number of the second lens, and V3 represents the abbe number of the third lens, V4 represents the Abbe number of the fourth lens element, V5 represents the Abbe number of the fifth lens element, V6 represents the Abbe number of the sixth lens element, V7 represents the Abbe number of the seventh lens element, EFL represents the system focal length of the optical imaging lens, TL represents the distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the seventh lens element, TTL represents the system length of the optical imaging lens, i.e., the distance on the optical axis from the object-side surface of the first lens element to the imaging surface, ALT represents the total thickness of the seven lens elements on the optical axis from the first lens element to the seventh lens element, i.e., the sum of T1, T2, T3, T4, T5, T6 and T7, AAG represents the distance on the optical axis from the image-side surface of the first lens element to the object-side surface of the second lens element, the distance on the optical axis from the image-side surface of the second lens element to the object-side surface of the third lens element, the distance on the optical axis from the image-side surface of the third lens, The distance between the image-side surface of the fifth lens element and the object-side surface of the sixth lens element on the optical axis and the distance between the image-side surface of the sixth lens element and the object-side surface of the seventh lens element on the optical axis are the sum of the six air gaps between the first lens element and the seventh lens element on the optical axis (i.e., the sum of G12, G23, G34, G45, G56, and G67), BFL represents the back focal length of the optical imaging lens, i.e., the distance between the image-side surface of the seventh lens element and the image-side surface on the optical axis (i.e., the sum of G7F, TTF, and GFP), HFOV represents the half-field angle of view of the optical imaging lens element, ImgH represents the image height of the optical imaging lens element, Fno represents the aperture value of the optical imaging lens element, and D67 represents the distance between.

According to an aspect of the present invention, there is provided an optical imaging lens system, wherein the first lens element has positive refractive power, the third lens element has positive refractive power, a circumferential area of an object-side surface of the third lens element is convex, an optical axis area of an image-side surface of the fourth lens element is convex, an optical axis area of an object-side surface of the sixth lens element is concave, an optical axis area of an object-side surface of the seventh lens element is concave, and the optical imaging lens system has only the above seven lens elements with refractive powers, and satisfies:

(EFL + ALT)/D67 ≦ 4.800 conditional formula (1).

According to another aspect of the present invention, in an optical imaging lens system, the third lens element has positive refractive power, a circumferential area of an object-side surface of the third lens element is convex, a circumferential area of an object-side surface of the fourth lens element is concave, an optical axis area of an image-side surface of the fourth lens element is convex, an optical axis area of an object-side surface of the sixth lens element is concave, an optical axis area of an object-side surface of the seventh lens element is concave, and the optical imaging lens system has only the above seven lens elements and satisfies conditional expression (1). The invention can selectively control the parameters and satisfy at least one of the following conditional expressions:

(T5+ G56+ T6)/T1 ≦ 2.500 conditional formula (2);

EFL/(T1+ G12+ T2) ≧ 4.500 conditional expression (3);

(T3+ AAG)/T4 ≧ 5.500 conditional formula (4);

(T3+ T4)/T6 ≦ 1.800 conditional formula (5);

AAG/(G12+ G23+ G34) ≧ 2.800 conditional expression (6);

(T1+ T5)/G34 ≦ 3.800 conditional formula (7);

(G12+ T6)/(G23+ G45) ≦ 2.500 conditional (8);

(T3+ T4+ AAG)/BFL ≦ 4.800 conditional (9);

(EFL + T5)/AAG ≧ 1.800 conditional formula (10);

(T4+ G45+ T5)/T2 ≦ 5.000 conditional formula (11);

TTL/(T1+ T5+ T6+ T7) ≦ 3.800 conditional equation (12);

ALT/(T1+ G45) ≦ 4.100 conditional formula (13);

(G34+ T6)/(G12+ T5) ≧ 2.500 conditional formula (14);

TL/(G34+ T4+ G45+ G56) ≦ 5.000 conditional (15);

(T2+ T7)/G45 ≦ 5.000 conditional formula (16);

EFL/BFL ≧ 4.500 conditional formula (17);

T6/(G12+ T5) ≧ 1.500 conditional expression (18); and/or

AAG/(T1+ T2) ≦ 4.000 conditional formula (19).

The foregoing list of exemplary constraints can also be arbitrarily combined with unequal numbers applied to the embodiments of the present invention, and is not limited thereto. In addition to the above conditional expressions, the present invention can also be implemented by designing additional concave-convex curved surface arrangements, refractive index variations, and various materials or other detailed structures for a single lens or multiple lenses to enhance the control of the system performance and/or resolution. It should be noted that these details need not be selectively incorporated into other embodiments of the present invention without conflict.

From the above, it can be seen that the optical imaging lens of the present invention can maintain the imaging quality, such as: good optical performance with low distortion aberration, and simultaneously shortening the length of the optical imaging lens system and increasing the thermal stability.

Drawings

FIG. 1 is a schematic cross-sectional view of a lens according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the relationship between the lens profile and the light focus;

FIG. 3 is a graph showing the relationship between the surface shape of a lens region and the region boundary in an example I;

FIG. 4 is a graph showing the relationship between the surface shape of the lens region and the region boundary in the second example;

FIG. 5 is a graph showing the relationship between the surface shape of the lens region and the region boundary in example III;

FIG. 6 is a schematic cross-sectional view of a seven-piece lens of an optical imaging lens according to a first embodiment of the present invention;

FIG. 7 is a schematic diagram of longitudinal spherical aberration and various aberrations of an optical imaging lens according to a first embodiment of the present invention;

FIG. 8 is a detailed optical data table diagram of each lens of the optical imaging lens according to the first embodiment of the present invention;

FIG. 9 is a table of aspheric data of an optical imaging lens according to a first embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a seven-piece lens of an optical imaging lens according to a second embodiment of the present invention;

FIG. 11 is a schematic diagram of longitudinal spherical aberration and various aberrations of an optical imaging lens according to a second embodiment of the present invention;

FIG. 12 is a detailed optical data table diagram of each lens of the optical imaging lens according to the second embodiment of the present invention;

FIG. 13 is a table of aspheric data for an optical imaging lens according to a second embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a third embodiment of the present invention;

FIG. 15 is a schematic diagram of longitudinal spherical aberration and various aberrations of an optical imaging lens according to a third embodiment of the present invention;

FIG. 16 is a detailed optical data table diagram of each lens of the optical imaging lens according to the third embodiment of the present invention;

FIG. 17 is a table of aspheric data for an optical imaging lens according to a third embodiment of the present invention;

FIG. 18 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a fourth embodiment of the present invention;

FIG. 19 is a schematic diagram of longitudinal spherical aberration and various aberrations of an optical imaging lens according to a fourth embodiment of the present invention;

FIG. 20 is a detailed optical data table diagram of each lens of the optical imaging lens according to the fourth embodiment of the present invention;

FIG. 21 is a table of aspheric data for an optical imaging lens according to a fourth embodiment of the present invention;

FIG. 22 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a fifth embodiment of the present invention;

FIG. 23 is a schematic diagram of longitudinal spherical aberration and various aberrations of an optical imaging lens according to a fifth embodiment of the present invention;

FIG. 24 is a detailed optical data table diagram of each lens of an optical imaging lens according to a fifth embodiment of the present invention;

FIG. 25 is a table of aspheric data for an optical imaging lens according to a fifth embodiment of the present invention;

FIG. 26 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a sixth embodiment of the present invention;

FIG. 27 is a schematic diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a sixth embodiment of the present invention;

FIG. 28 is a detailed optical data table diagram of each lens of the optical imaging lens according to the sixth embodiment of the present invention;

FIG. 29 is a chart of aspheric data tables of an optical imaging lens according to a sixth embodiment of the present invention;

FIG. 30 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a seventh embodiment of the present invention;

FIG. 31 is a schematic diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a seventh embodiment of the present invention;

FIG. 32 is a detailed optical data table diagram of each lens of the optical imaging lens according to the seventh embodiment of the present invention;

FIG. 33 is a table of aspheric data for an optical imaging lens according to a seventh embodiment of the present invention;

FIG. 34 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to an eighth embodiment of the present invention;

FIG. 35 is a schematic diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to an eighth embodiment of the present invention;

FIG. 36 is a detailed optical data table diagram of each lens of the optical imaging lens according to the eighth embodiment of the present invention;

FIG. 37 is a table of aspheric data for an optical imaging lens according to an eighth embodiment of the present invention;

FIG. 38 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a ninth embodiment of the present invention;

FIG. 39 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a ninth embodiment of the present invention;

FIG. 40 is a detailed optical data table diagram of each lens of the optical imaging lens according to the ninth embodiment of the present invention;

FIG. 41 is a table of aspheric data for an optical imaging lens according to a ninth embodiment of the present invention;

FIG. 42 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a tenth embodiment of the present invention;

FIG. 43 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a tenth embodiment of the present invention;

FIG. 44 is a detailed optical data table diagram of each lens of the optical imaging lens according to the tenth embodiment of the present invention;

FIG. 45 is a table of aspheric data for an optical imaging lens according to a tenth embodiment of the invention;

FIG. 46 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to an eleventh embodiment of the present invention;

FIG. 47 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to an eleventh embodiment of the present invention;

FIG. 48 is a detailed optical data table diagram of each lens of the optical imaging lens according to the eleventh embodiment of the present invention;

FIG. 49 is a table of aspheric data for an optical imaging lens according to an eleventh embodiment of the invention;

FIG. 50 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a twelfth embodiment of the present invention;

FIG. 51 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a twelfth embodiment of the present invention;

FIG. 52 is a detailed optical data table diagram of each lens of the optical imaging lens according to the twelfth embodiment of the invention;

FIG. 53 is a chart of aspheric data table of an optical imaging lens according to a twelfth embodiment of the invention;

FIG. 54 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a thirteenth embodiment of the present invention;

FIG. 55 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a thirteenth embodiment of the present invention;

FIG. 56 is a detailed optical data table diagram of each lens of an optical imaging lens according to a thirteenth embodiment of the invention;

FIG. 57 is a table of aspheric data for an optical imaging lens according to a thirteenth embodiment of the invention;

FIG. 58 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a fourteenth embodiment of the present invention;

FIG. 59 is a diagram illustrating longitudinal spherical aberration and various aberrations of an optical imaging lens according to a fourteenth embodiment of the present invention;

FIG. 60 is a detailed optical data table diagram of each lens of an optical imaging lens according to a fourteenth embodiment of the present invention;

FIG. 61 is a chart of aspheric data tables of an optical imaging lens according to a fourteenth embodiment of the invention;

FIGS. 62A and 62B together set forth a table comparing the various parameters of the fourteen examples above and the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T), and AAG/(T + T).

Detailed Description

Before beginning the detailed description of the invention, reference will first be made explicitly to the accompanying drawings in which: 1,2,3,4,5,6,7,8,9,10,12,12,13,14 optical imaging lens; 100,200,300,400,500 lenses; 130 an assembling part; 211,212 parallel rays; an STO aperture; an L1 first lens; an L2 second lens; an L3 third lens; an L4 fourth lens; an L5 fifth lens; an L6 sixth lens; an L7 seventh lens; a TF optical filter; an IMA imaging plane; 110,410,510, L1a1, L2a1, L3a1, L4a1, L5a1, L6a1, TFA1 cargo side; 120,320, L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, TFA2 image side; z1, L1A1C, L1A2C, L2A1C, L2A2C, L3A1C, L3A2C, L4A1C, L4A2C, L5A1C, L5A2C, L6A1C, L6A2C optical axis regions; z2, L1A1P, L1A2P, L2A1P, L2A2P, L3A1P, L3A2P, L4A1P, L4A2P, L5A1P, L5A2P, L6A1P, L6A2P circumferential regions; a1 object side; a2 image side; a CP center point; CP1 first center point; CP2 second center point; TP1 first transition point; TP2 second transition point; an OB optical boundary; i, an optical axis; lc chief rays; lm marginal rays; an EL extension line; z3 relay zone; the intersection of M and R.

To further illustrate the various embodiments, the invention is provided with figures. The drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references in mind, one skilled in the art will understand that other embodiments are possible and that the advantages of the invention are realized. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The terms "optic axis region", "circumferential region", "concave" and "convex" used in the present specification and claims should be interpreted based on the definitions set forth in the present specification.

The optical system of the present specification includes at least one lens that receives imaging light incident on the optical system within a half field of view (HFOV) angle from parallel to the optical axis. The imaging light is imaged on an imaging surface through the optical system. The term "a lens having positive refractive index (or negative refractive index)" means that the paraxial refractive index of the lens calculated by Gaussian optics theory is positive (or negative). The term "object-side (or image-side) of a lens" is defined as the specific range of the imaging light rays passing through the lens surface. The imaging light includes at least two types of light: a chief ray (chief ray) Lc and a marginal ray (margin ray) Lm (shown in FIG. 1). The object-side (or image-side) surface of the lens may be divided into different regions at different positions, including an optical axis region, a circumferential region, or in some embodiments, one or more relay regions, the description of which will be described in detail below.

Fig. 1 is a radial cross-sectional view of a lens 100. Two reference points on the surface of the lens 100 are defined: a center point and a transition point. The center point of the lens surface is an intersection point of the surface and the optical axis I. As illustrated in fig. 1, the first center point CP1 is located on the object side 110 of the lens 100, and the second center point CP2 is located on the image side 120 of the lens 100. The transition point is a point on the lens surface, and a tangent to the point is perpendicular to the optical axis I. The optical boundary OB of a lens surface is defined as the point where the radially outermost marginal ray Lm passing through the lens surface intersects the lens surface. All transition points are located between the optical axis I and the optical boundary OB of the lens surface. In addition, if there are a plurality of transition points on a single lens surface, the transition points are sequentially named from the first transition point in the radially outward direction. For example, a first transition point TP1 (closest to the optical axis I), a second transition point TP2 (shown in fig. 4), and an nth transition point (farthest from the optical axis I).

A range from the center point to the first transition point TP1 is defined as an optical axis region, wherein the optical axis region includes the center point. The area radially outward of the nth switching point farthest from the optical axis I to the optical boundary OB is defined as a circumferential area. In some embodiments, a relay area between the optical axis area and the circumferential area may be further included, and the number of relay areas depends on the number of transition points.

When a light ray parallel to the optical axis I passes through a region, the region is convex if the light ray is deflected toward the optical axis I and the intersection point with the optical axis I is located on the lens image side a 2. When a light ray parallel to the optical axis I passes through a region, the region is concave if the intersection of the extension line of the light ray and the optical axis I is located on the object side a1 of the lens.

In addition, referring to FIG. 1, the lens 100 may further include an assembling portion 130 extending radially outward from the optical boundary OB. The assembling portion 130 is generally used for assembling the lens 100 to a corresponding component (not shown) of an optical system. The imaging light does not reach the assembling portion 130. The structure and shape of the assembly portion 130 are merely examples for illustrating the present invention, and the scope of the present invention is not limited thereby. The lens assembling portion 130 discussed below may be partially or entirely omitted from the drawings.

Referring to fig. 2, an optical axis region Z1 is defined between the center point CP and the first transition point TP 1. A circumferential zone Z2 is defined between the first transition point TP1 and the optical boundary OB of the lens surface. As shown in fig. 2, the parallel light ray 211 after passing through the optical axis region Z1 intersects the optical axis I at the image side a2 of the lens 200, i.e., the focal point of the parallel light ray 211 passing through the optical axis region Z1 is located at the R point of the image side a2 of the lens 200. Since the light ray intersects the optical axis I at the image side a2 of the lens 200, the optical axis region Z1 is convex. In contrast, the parallel rays 212 diverge after passing through the circumferential zone Z2. As shown in fig. 2, an extension line EL of the parallel light ray 212 passing through the circumferential region Z2 intersects the optical axis I at the object side a1 of the lens 200, i.e., a focal point of the parallel light ray 212 passing through the circumferential region Z2 is located at a point M on the object side a1 of the lens 200. Since the extension line EL of the light ray intersects the optical axis I at the object side a1 of the lens 200, the circumferential region Z2 is concave. In the lens 200 shown in fig. 2, the first transition point TP1 is a boundary between the optical axis region and the circumferential region, i.e., the first transition point TP1 is a boundary point between convex and concave surfaces.

On the other hand, the determination of the surface shape irregularity of the optical axis region may be performed by the determination method of a person ordinarily skilled in the art, i.e., by determining the sign of the paraxial radius of curvature (abbreviated as R value) of the optical axis region surface shape irregularity of the lens. The R value may be commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in lens data sheet (lens data sheet) of optical design software. When the R value is positive, the optical axis area of the object side is judged to be a convex surface; and when the R value is negative, judging that the optical axis area of the object side surface is a concave surface. On the contrary, when the R value is positive, the optical axis area of the image side surface is judged to be a concave surface; when the R value is negative, the optical axis area of the image side surface is judged to be convex. The determination result of the method is consistent with the determination result of the intersection point between the ray/ray extension line and the optical axis, i.e. the determination method of the intersection point between the ray/ray extension line and the optical axis is to determine the surface-shaped convexo-concave by locating the focus of the ray parallel to the optical axis at the object side or the image side of the lens. Alternatively, as described herein, a region that is convex (or concave), or a region that is convex (or concave) may be used.

Fig. 3 to 5 provide examples of determining the surface shape and the zone boundary of the lens zone in each case, including the optical axis zone, the circumferential zone, and the relay zone described above.

Fig. 3 is a radial cross-sectional view of lens 300. Referring to fig. 3, the image side 320 of the lens 300 presents only one transition point TP1 within the optical boundary OB. Fig. 3 shows an optical axis region Z1 and a circumferential region Z2 on the image side surface 320 of the lens 300. The R value of the image side surface 320 is positive (i.e., R >0), and thus the optical axis region Z1 is concave.

Generally, the shape of each region bounded by the transition point is opposite to the shape of the adjacent region, and thus the transition point can be used to define the transition of the shapes from concave to convex or from convex to concave. In fig. 3, the optical axis region Z1 is concave, and the surface transitions at the transition point TP1, so the circumferential region Z2 is convex.

Fig. 4 is a radial cross-sectional view of lens 400. Referring to fig. 4, the object side surface 410 of the lens 400 has a first transition point TP1 and a second transition point TP 2. An optical axis region Z1 of the object side surface 410 between the optical axis I and the first transition point TP1 is defined. The object side surface 410 has a positive value of R (i.e., R >0), and thus the optical axis region Z1 is convex.

A circumferential region Z2 is defined between the second transition point TP2 and the optical boundary OB of the object-side face 410 of the lens 400, the circumferential region Z2 of the object-side face 410 also being convex. In addition, a relay zone Z3 is defined between the first transition point TP1 and the second transition point TP2, and the relay zone Z3 of the object side 410 is concave. Referring again to fig. 4, the object side surface 410 includes, in order radially outward from the optical axis I, an optical axis region Z1 between the optical axis I and the first transition point TP1, a relay region Z3 between the first transition point TP1 and the second transition point TP2, and a circumferential region Z2 between the second transition point TP2 and the optical boundary OB of the object side surface 410 of the lens 400. Since the optical axis region Z1 is convex, the surface shape changes from the first transition point TP1 to concave, the relay region Z3 is concave, and the surface shape changes from the second transition point TP2 to convex, so the circumferential region Z2 is convex.

Fig. 5 is a radial cross-sectional view of lens 500. The object side 510 of the lens 500 has no transition point. For a lens surface without a transition point, such as the object side 510 of the lens 500, an optical axis area is defined as 0-50% of the distance from the optical axis I to the optical boundary OB of the lens surface, and a circumferential area is defined as 50-100% of the distance from the optical axis I to the optical boundary OB of the lens surface. Referring to the lens 500 shown in fig. 5, 50% of the distance from the optical axis I to the optical boundary OB on the surface of the lens 500 from the optical axis I is defined as an optical axis region Z1 of the object side surface 510. The object side surface 510 has a positive value of R (i.e., R >0), and thus the optical axis region Z1 is convex. Since the object-side surface 510 of the lens 500 has no transition point, the circumferential region Z2 of the object-side surface 510 is also convex. The lens 500 may further have an assembling portion (not shown) extending radially outward from the circumferential region Z2.

The optical imaging lens of the present invention is a fixed focus lens, which includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element sequentially disposed along an optical axis from an object side to an image side. The first lens element to the seventh lens element each include an object-side surface facing the object side and passing the image light and an image-side surface facing the image side and passing the image light. The optical imaging lens of the present invention can maintain good optical performance by designing the surface shape characteristics and parameter value range of the lens, and simultaneously shorten the length of the optical imaging lens system, reduce the aperture value and/or enlarge the field angle.

The characteristics of the lens designed herein mainly consider the optical characteristics, system length, aperture value and/or field angle of the optical imaging lens, for example: the third lens element with positive refractive power has a convex peripheral area on the object-side surface of the third lens element, a convex optical axis area on the image-side surface of the fourth lens element, a concave optical axis area on the object-side surface of the sixth lens element, and a concave optical axis area on the object-side surface of the seventh lens element, and the peripheral area on the object-side surface of the first lens element or the fourth lens element with positive refractive power has a concave surface shape, so that the objectives of correcting longitudinal spherical aberration and field curvature aberration of the optical system, reducing distortion aberration, reducing aperture value, and enlarging field angle can be effectively achieved.

In addition to the design of surface shape and refractive index, when the optical imaging lens further satisfies (EFL + ALT)/D67 ≦ 4.800, the system length of the optical imaging lens can be effectively shortened, and the preferred range is 3.100 ≦ (EFL + ALT)/D67 ≦ 4.800.

In order to achieve the purpose of shortening the length of the lens system, the optical imaging lens of the present invention can properly adjust the air gap between the lenses or the thickness of the lenses, but must consider the difficulty of manufacturing and ensure the imaging quality, so if the numerical limitation of at least one of the following conditional expressions is satisfied, it can be better configured: (T + G + T)/T ≦ 2.500, EFL/(T + G + T) ≧ 4.500, (T + AAG)/T ≧ 1.800, (T + T + G + G) ≧ 2.800, (T + T)/G ≦ 3.800, (G + T)/(G + G) ≦ 2.500, (T + T + AAG)/BFL ≦ 1.800, (EFL + T)/AAG ≧ 1.800, (T + G + T)/T ≦ 5.000, TTL/(T + T + T + T) ≦ 3.800, ALT/(T + G) ≦ 4.100, (G + T)/(G + T) ≦ 2.500, TL + T + G + G) ≦ 5.000, (T + T)/G ≦ 5.000, EFL/BFL ≦ 4.500, T + T ≦ 1.000, and T + T ≦ 4.000. Preferably, the optical imaging lens further satisfies 1.300 ≦ T + G + T)/T ≦ 2.500, 4.500 ≦ EFL/(T + G + T) ≦ T (T + AAG)/T ≦ 11.000, 0.600 ≦ T + T)/T ≦ 1.800, 2.800 ≦ AAG/(G + G) ≦ 4.000, 1.800 ≦ T + T)/G ≦ 3.800, 0.800 ≦ G + T)/(G + G) ≦ 2.500, 2.300 ≦ T + G)/BFL ≦, 1.800 ≦ EFL + T)/AAG ≦ 2.800 ≦ T + T)/T ≦ 5.000, 2.200 ≦ TTL/(T + T)/(T) ≦ 3.800, 2.600 ≦ T ≦ 2.500 ≦ T + T/(T + T) +, 2.400 ≦ T + T/(T +/T/(T) + 5.000, 2.400 ≦ T + T/(T +/G/(T +/400 ≦ 2.000, 2.400 ≦ 400 ≦ 2.500 ≦ T, 1.500 ≦ at least one of T6/(G12+ T5) ≦ 2.800 and 1.700 ≦ at least one of AAG/(T1+ T2) ≦ 4.000. In view of the unpredictability of the optical system design, the architecture of the present invention, when satisfying the above-mentioned conditional expressions, can preferably improve the defects of the prior art by increasing the field angle, shortening the length of the optical imaging lens system, reducing the aperture value and/or improving the assembly yield.

In addition to the above conditional expressions, the following embodiments may also be implemented to design additional concave-convex curved surface arrangements, refractive index variations or other detailed structures of more lenses for a single lens or a plurality of lenses, so as to enhance the control of system performance and/or resolution and increase the yield in manufacturing. In addition, in terms of material design, all lenses of the optical imaging lens according to the embodiment of the present invention may be made of various transparent materials such as glass, plastic, and resin. It should be noted that these details need not be selectively combined and applied in other embodiments of the present invention without conflict, and are not limited thereto.

To illustrate that the present invention indeed provides good optical performance, while increasing the field angle and decreasing the aperture value, a number of examples and detailed optical data thereof are provided below. First, please refer to fig. 6 to 9 together, in which fig. 6 shows a schematic cross-sectional structure diagram of a seven-piece lens of an optical imaging lens according to a first embodiment of the present invention, fig. 7 shows schematic diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the first embodiment of the present invention, fig. 8 shows detailed optical data of the optical imaging lens according to the first embodiment of the present invention, and fig. 9 shows aspheric data of each lens of the optical imaging lens according to the first embodiment of the present invention.

As shown in fig. 6, the optical imaging lens 1 of the present embodiment sequentially includes, from an object side a1 to an image side a2, an aperture stop (aperture) STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7. An optical filter TF and an imaging plane IMA of an image sensor are disposed on the image side a2 of the optical imaging lens system 1. In this embodiment, the filter TF is an infrared filter (IRcut filter) and is disposed between the seventh lens element L7 and the imaging plane IMA, and the filter TF filters the light passing through the optical imaging lens 1 to remove wavelengths in a specific wavelength band, for example, to remove an infrared wavelength band, so that the wavelengths in the infrared wavelength band are not imaged on the imaging plane IMA.

The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 of the optical imaging lens 1 are made of plastic, but not limited thereto, and may be made of other transparent materials, such as: glass, resin.

The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the seventh lens L7 form the following detailed structures: the first lens element L1 has positive refractive index and has an object-side surface L1a1 facing the object side a1 and an image-side surface L1a2 facing the image side a 2. The optical axis region L1A1C of the object-side surface L1A1 is convex and the circumferential region L1A1P thereof is convex. The optical axis region L1A2C of the image side face L1A2 is concave and the circumferential region L1A2P is concave. The object-side surface L1a1 and the image-side surface L1a2 of the first lens element L1 are aspheric.

The second lens element L2 has negative refractive index and has an object-side surface L2a1 facing the object side a1 and an image-side surface L2a2 facing the image side a 2. The optical axis region L2A1C of the object-side surface L2A1 is convex and the circumferential region L2A1P thereof is convex. The optical axis region L2A2C of the image side face L2A2 is concave and the circumferential region L2A2P is concave. The object-side surface L2a1 and the image-side surface L2a2 of the second lens element L2 are aspheric.

The third lens element L3 has positive refractive index and has an object-side surface L3a1 facing the object side a1 and an image-side surface L3a2 facing the image side a 2. The optical axis region L3A1C of the object-side face L3A1 is convex and the circumferential region L3A1P thereof is convex. The optical axis region L3A2C of the image side face L3A2 is concave and the circumferential region L3A2P is concave. The object-side surface L3a1 and the image-side surface L3a2 of the third lens element L3 are aspheric.

The fourth lens element L4 has positive refractive index and has an object-side surface L4a1 facing the object side a1 and an image-side surface L4a2 facing the image side a 2. The optical axis region L4A1C of the object side face L4A1 is concave and the circumferential region L4A1P thereof is concave. The optical axis region L4A2C of the image side face L4A2 is convex, and the circumferential region L4A2P thereof is convex. The object-side surface L4a1 and the image-side surface L4a2 of the fourth lens element L4 are aspheric.

The fifth lens element L5 has negative refractive index and has an object-side surface L5a1 facing the object side a1 and an image-side surface L5a2 facing the image side a 2. The object-side optical axis region L5A1C is convex and the peripheral region L5A1P is concave. The optical axis region L5A2C of the image side face L5A2 is concave and the circumferential region L5A2P is convex. The object-side surface L5a1 and the image-side surface L5a2 of the fifth lens element L5 are aspheric.

The sixth lens element L6 has positive refractive index and has an object-side surface L6a1 facing the object side a1 and an image-side surface L6a2 facing the image side a 2. The optical axis region L6A1C of the object side face L6A1 is concave and the circumferential region L6A1P thereof is concave. The optical axis region L6A2C of the image side face L6A2 is convex, and the circumferential region L6A2P thereof is convex. The object-side surface L6a1 and the image-side surface L6a2 of the sixth lens element L6 are aspheric.

The seventh lens element L7 has negative refractive index and has an object-side surface L7a1 facing the object side a1 and an image-side surface L7a2 facing the image side a 2. The optical axis region L7A1C of the object-side face L7A1 is concave and the circumferential region L7A1P thereof is convex. The optical axis region L7A2C of the image side face L7A2 is concave and the circumferential region L7A2P is convex. The object-side surface L7a1 and the image-side surface L7a2 of the seventh lens element L7 are aspheric.

In this embodiment, an air gap is designed to exist between each of the lenses L1, L2, L3, L4, L5, L6, L7, the filter TF and the image plane IMA of the image sensor, however, the present invention is not limited thereto, and in other embodiments, any two opposing lens surface profiles may be designed to correspond to each other and may be attached to each other to eliminate the air gap therebetween.

For the values of the optical characteristics and the distances of the lenses in the optical imaging lens 1 of the present embodiment, please refer to fig. 8. For values of the conditional expressions (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G), (T + T)/G, (G + T)/(G + G), (T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G), (T + T)/G, EFL/BFL, T/(G + T), and AAG/(T + T), see fig. 62A.

The object-side surface L1a1 and the image-side surface L1a2 of the first lens element L1, the object-side surface L2a1 and the image-side surface L2a2 of the second lens element L2, the object-side surface L3a1 and the image-side surface L3a2 of the third lens element L3, the object-side surface L4a1 and the image-side surface L4a2 of the fourth lens element L4, the object-side surface L5a1 and the image-side surface L5a2 of the fifth lens element L5, the object-side surface L6a1 and the image-side surface L6a2 of the sixth lens element L6, and the object-side surface L7a1 and the image-side surface L7a2 of the seventh lens element L7 are all defined by the following curve equations:

y represents a vertical distance between a point on the aspherical surface and the optical axis; z represents the depth of the aspheric surface (the perpendicular distance between a point on the aspheric surface at a distance Y from the optical axis and a tangent plane tangent to the vertex on the aspheric optical axis); r represents the radius of curvature of the lens surface near the optical axis; k is cone coefficient (Conic Constant); a is_2iAre aspheric coefficients of order 2 i. Please refer to fig. 9 for the detailed data of the parameters of each aspheric surface.

Fig. 7 (a) is a schematic diagram illustrating the vertical spherical aberration of the present embodiment, wherein the horizontal axis represents the vertical spherical aberration and the vertical axis represents the field of view. Fig. 7 (b) is a schematic diagram showing the field curvature aberration in the sagittal direction of the present embodiment, and fig. 7 (c) is a schematic diagram showing the field curvature aberration in the meridional direction of the present embodiment, in which the horizontal axis is the field curvature aberration and the vertical axis is the image height. Fig. 7 (d) is a diagram illustrating the distortion aberration of the present embodiment, wherein the horizontal axis is percentage and the vertical axis is image height. The deviation amplitude of each curve can show that the deviation of the imaging point of the off-axis light rays with different heights is controlled to be-0.06-0.03 mm, the spherical aberration of different wavelengths is obviously improved, the field curvature aberration in the sagittal direction falls within-0.04-0.02 mm, the field curvature aberration in the meridional direction falls within-0.04-0.14 mm, and the distortion aberration is maintained within 0-4%.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 1 have met the imaging quality requirements of the optical system. The optical imaging lens 1 of the present embodiment expands the half field of view (HFOV) to 42.149 degrees, providing an Fno of 1.600 and a system length of 5.670mm, and effectively providing better imaging quality compared to the conventional optical lens.

Referring to fig. 10 to 13, fig. 10 shows a schematic cross-sectional structure of seven lenses of an optical imaging lens according to a second embodiment of the present invention, fig. 11 shows a schematic view of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the second embodiment of the present invention, fig. 12 shows detailed optical data of the optical imaging lens according to the second embodiment of the present invention, and fig. 13 shows aspheric data of each lens of the optical imaging lens according to the second embodiment of the present invention. As shown in fig. 10, the optical imaging lens 2 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex surface configurations of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object-side surface a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image-side surface a2 and the positive and negative refractive index configurations of the respective lenses in the second embodiment are substantially similar to those in the first embodiment, except that the respective optical parameters, such as the curvature radii, the lens thicknesses, the aspheric coefficients, and the back focal length, and the concave-convex surface configuration of the object-side surface L7a1 in the second embodiment are different from those in the first embodiment. In order to clearly show the drawing, only the optical axis region and the circumferential region where the surface concave-convex configuration is different from that of the first embodiment are marked, and the marks of the optical axis region and the circumferential region where the concave-convex configuration is the same are omitted, and each of the following embodiments also only marks the optical axis region and the circumferential region where the lens surface concave-convex configuration is different from that of the first embodiment, and the marks of the same are omitted, and are not repeated. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. For the optical characteristics and the values of the distances of the lenses of the optical imaging lens 2 of the present embodiment, please refer to fig. 12. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in FIG. 11 (a), it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.03 to 0.02 mm. From the field curvature aberration in the sagittal direction in FIG. 11 (b), the three representative wavelength variations fall within-0.03 to 0.02 mm. From the field curvature aberration in the tangential direction in FIG. 11 (c), the three representative wavelength variations fall within the range of-0.04 to 0.08 mm. FIG. 11 (d) shows that the distortion aberration of the optical imaging lens 2 is maintained in the range of 0 to 5%. Compared with the first embodiment, the longitudinal spherical aberration, the sagittal and meridional field curvature aberrations of the present embodiment are smaller.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 2 have met the imaging quality requirements of the optical system. The optical imaging lens 2 of the present embodiment expands the half field of view (HFOV) to 43.102 degrees, providing an Fno of 1.600 and a system length of 5.690mm, and effectively providing better imaging quality compared to the conventional optical lens. The half viewing angle of this embodiment is larger compared to the first embodiment.

Referring to fig. 14 to 17, wherein fig. 14 shows a schematic cross-sectional structure of a seven-piece lens of an optical imaging lens according to a third embodiment of the present invention, fig. 15 shows schematic diagrams of aberrations of the optical imaging lens according to the third embodiment of the present invention, fig. 16 shows detailed optical data of the optical imaging lens according to the third embodiment of the present invention, and fig. 17 shows aspherical data of each lens of the optical imaging lens according to the third embodiment of the present invention. As shown in fig. 14, the optical imaging lens 3 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, L6a1, L7a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, L7a2 facing the image side a2 and the positive and negative refractive index configurations of the lenses of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the third embodiment are substantially similar to those in the first embodiment, except that the positive and negative refractive index configurations of the respective optical parameters of the third lens L4, such as the radius of curvature, the lens thickness, the aspheric coefficient, the back focal length, and the negative refractive index of the fourth lens L4 in the third embodiment are different from those in the first embodiment. Refer to fig. 16 for the values of the optical characteristics and distances of the lenses of the optical imaging lens 3 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in (a) of fig. 15, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.06 to 0.03 mm. From the field curvature aberration in the sagittal direction in fig. 15 (b), the three representative wavelength variations fall within-0.04 to 0.04 mm. From the field curvature aberration in the meridional direction in FIG. 15 (c), the three representative wavelength variations fall within-0.12 to 0.06 mm. FIG. 15 (d) shows that the distortion aberration of the optical imaging lens 3 is maintained in the range of 0 to 4.5%. From the above data, it can be seen that various optical characteristics of the optical imaging lens 3 have met the imaging quality requirements of the optical system. The optical imaging lens 3 of the present embodiment expands the half field of view (HFOV) to 43.129 degrees, provides Fno of 1.600 and a system length of 5.549mm, and effectively provides better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half viewing angle of the present embodiment is larger and the system length is shorter.

Referring to fig. 18 to 21, fig. 18 is a schematic cross-sectional view illustrating a seven-piece lens of an optical imaging lens according to a fourth embodiment of the invention, fig. 19 is a schematic view illustrating longitudinal spherical aberration and various aberrations of the optical imaging lens according to the fourth embodiment of the invention, fig. 20 is a schematic view illustrating detailed optical data of the optical imaging lens according to the fourth embodiment of the invention, and fig. 21 is a schematic view illustrating aspheric data of each lens of the optical imaging lens according to the fourth embodiment of the invention. As shown in fig. 18, the optical imaging lens 4 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the fourth embodiment, such as the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2, and the positive and negative refractive index configurations of the respective lenses are substantially similar to those of the first embodiment, except that the fourth embodiment is different from the first embodiment in the concave-convex configuration of the surfaces of the object-side surfaces L7a1 and the optical parameters, such as the curvature radius, the lens thickness, the aspheric coefficient, and the back focal length. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. For the values of the optical characteristics and the distances of the lenses of the optical imaging lens 4 of the present embodiment, please refer to fig. 20. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in FIG. 19 (a), it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.025 to 0.02 mm. From the field curvature aberration in the sagittal direction in FIG. 19 (b), the three representative wavelength variations fall within-0.03 to 0.02 mm. From the field curvature aberration in the meridional direction in FIG. 19 (c), the three representative wavelength variations fall within-0.06 to 0.07 mm. FIG. 19 (d) shows that the distortion aberration of the optical imaging lens 4 is maintained in the range of 0 to 4%. In this embodiment, the longitudinal spherical aberration, and the field curvature aberration in the sagittal and meridional directions are smaller than those in the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 4 have met the imaging quality requirements of the optical system. The optical imaging lens 4 of the present embodiment expands the half field of view (HFOV) to 42.472 degrees, providing an Fno of 1.600 and a system length of 5.862mm, and effectively providing better imaging quality compared to the conventional optical lens. The half angle of view of this embodiment is larger than that of the first embodiment.

Referring to fig. 22 to 25 together, wherein fig. 22 shows a schematic cross-sectional structure of a seven-piece lens of an optical imaging lens according to a fifth embodiment of the present invention, fig. 23 shows a schematic view of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the fifth embodiment of the present invention, fig. 24 shows detailed optical data of the optical imaging lens according to the fifth embodiment of the present invention, and fig. 25 shows aspheric data of each lens of the optical imaging lens according to the fifth embodiment of the present invention. As shown in fig. 22, the optical imaging lens 5 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex arrangement of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index arrangement of each lens in the fifth embodiment are substantially similar to those in the first embodiment, except that the curvature radii, the lens thicknesses, the aspheric coefficients, the back focal length, and the concave-convex arrangement of the surface of the object-side surface L7a1 in the fifth embodiment are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 24 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 5 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in (a) of FIG. 23, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.025 to 0.015 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 23, the three representative wavelength variations fall within-0.02 to 0.02 mm. In the field curvature aberration in the tangential direction in FIG. 23 (c), the variation of the three representative wavelengths falls within-0.04 to 0.12 mm. FIG. 23 (d) shows that the distortion aberration of the optical imaging lens 5 is maintained in the range of 0 to 3.5%. The longitudinal spherical aberration, sagittal, field curvature aberration in the meridional direction, and distortion aberration are smaller in this embodiment than in the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 5 have met the imaging quality requirements of the optical system. The optical imaging lens 5 of the present embodiment expands the half field of view (HFOV) to 42.183 degrees, providing an Fno of 1.600 and a system length of 5.916mm, and effectively providing better imaging quality compared to the conventional optical lens. The half angle of view of this embodiment is larger than that of the first embodiment.

Referring to fig. 26 to 29 together, wherein fig. 26 shows a schematic cross-sectional structure of seven lenses of an optical imaging lens according to a sixth embodiment of the present invention, fig. 27 shows schematic longitudinal spherical aberration and various aberrations of the optical imaging lens according to the sixth embodiment of the present invention, fig. 28 shows detailed optical data of the optical imaging lens according to the sixth embodiment of the present invention, and fig. 29 shows aspheric data of each lens of the optical imaging lens according to the sixth embodiment of the present invention. As shown in fig. 26, the optical imaging lens 6 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the sixth embodiment are substantially similar to those in the first embodiment, except that the radius of curvature of the lens surfaces, the lens thickness, the back focal length, the concave-convex configuration of the surface of the object-side surface L7a1, and the negative refractive index of the fourth lens L4 in the sixth embodiment are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. For the optical characteristics and the values of the distances of the lenses of the optical imaging lens 6 of the present embodiment, please refer to fig. 28. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in FIG. 27 (a), it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.03 to 0.025 mm. From the field curvature aberration in the sagittal direction in fig. 27 (b), the three representative wavelength variations fall within-0.04 to 0.02 mm. In the field curvature aberration in the tangential direction in FIG. 27 (c), the variation of the three representative wavelengths falls within the range of-0.03 to 0.09 mm. FIG. 27 (d) shows that the distortion aberration of the optical imaging lens 6 is maintained in the range of 0 to 4.5%. In this embodiment, the longitudinal spherical aberration and the field curvature aberration in the meridional direction are smaller than those in the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 6 have met the imaging quality requirements of the optical system. The optical imaging lens 6 of the present embodiment expands the half field of view (HFOV) to 43.133 degrees, providing an Fno of 1.600 and a system length of 5.674mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half viewing angle of the present embodiment is larger.

Referring to fig. 30 to 33 together, wherein fig. 30 shows a schematic cross-sectional structure of a seven-piece lens of an optical imaging lens according to a seventh embodiment of the present invention, fig. 31 shows schematic longitudinal spherical aberration and various aberrations of the optical imaging lens according to the seventh embodiment of the present invention, fig. 32 shows detailed optical data of the optical imaging lens according to the seventh embodiment of the present invention, and fig. 33 shows aspheric data of each lens of the optical imaging lens according to the seventh embodiment of the present invention. As shown in fig. 30, the optical imaging lens 7 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the seventh embodiment are substantially similar to those in the first embodiment, except that the positive and negative refractive index of the curvature radius, the lens thickness, the back focal length, the concave-convex configuration of the object-side surface L7a1, and the fourth lens L4 are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. For the optical characteristics and the values of the distances of the lenses of the optical imaging lens 7 of the present embodiment, please refer to fig. 32. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62A.

From the longitudinal spherical aberration in (a) of FIG. 31, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis light ray at different heights is controlled within-0.025 to 0.025 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 31, the three representative wavelength variations fall within-0.04 to 0.02 mm. In the field curvature aberration in the tangential direction in FIG. 31 (c), the variation of the three representative wavelengths falls within the range of-0.05 to 0.08 mm. FIG. 31 (d) shows that the distortion aberration of the optical imaging lens 7 is maintained in the range of 0 to 3.5%. The longitudinal spherical aberration, the field curvature aberration in the meridional direction, and the distortion aberration are smaller in this embodiment than in the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 7 have met the imaging quality requirements of the optical system. The optical imaging lens 7 of the present embodiment expands the half field of view (HFOV) to 44.000 degrees, provides an Fno of 1.600 and a system length of 5.586mm, and effectively provides better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Please refer to fig. 34 to 37 together, in which fig. 34 shows a schematic cross-sectional structure diagram of a seven-piece lens of an optical imaging lens according to an eighth embodiment of the present invention, fig. 35 shows schematic diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the eighth embodiment of the present invention, fig. 36 shows detailed optical data of the optical imaging lens according to the eighth embodiment of the present invention, and fig. 37 shows aspheric data of each lens of the optical imaging lens according to the eighth embodiment of the present invention. As shown in fig. 34, the optical imaging lens 8 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the eighth embodiment are substantially similar to those in the first embodiment, except that the positive and negative refractive indices of the curvature radius, the lens thickness, the back focal length, the concave-convex configuration of the surface of the object-side surface L7a1, and the fourth lens L4 are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 36 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 8 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in (a) of FIG. 35, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray at different heights is controlled within-0.025 to 0.02 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 35, the three representative wavelength variations fall within-0.03 to 0.02 mm. From the field curvature aberration in the meridional direction in FIG. 35 (c), the three representative wavelength variations fall within the range of-0.06 to 0.05 mm. FIG. 35 (d) shows that the distortion aberration of the optical imaging lens 8 is maintained in the range of 0 to 3%. Compared with the first embodiment, the present embodiment has smaller longitudinal spherical aberration, sagittal, field curvature aberration in the meridional direction, and distortion aberration. From the above data, it can be seen that various optical characteristics of the optical imaging lens 8 have met the imaging quality requirements of the optical system. The optical imaging lens 8 of the present embodiment expands the half field of view (HFOV) to 44.009 degrees, providing an Fno of 1.600 and a system length of 5.657mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Please refer to fig. 38 to fig. 41 together, in which fig. 38 shows a schematic cross-sectional structure of a seven-piece lens of an optical imaging lens according to a ninth embodiment of the present invention, fig. 39 shows a schematic view of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the ninth embodiment of the present invention, fig. 40 shows detailed optical data of the optical imaging lens according to the ninth embodiment of the present invention, and fig. 41 shows aspheric data of each lens of the optical imaging lens according to the ninth embodiment of the present invention. As shown in fig. 38, the optical imaging lens 9 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the ninth embodiment are substantially similar to those in the first embodiment, except that the positive and negative refractive index of the curvature radius, the lens thickness, the back focal length, the concave-convex configuration of the object-side surface L7a1, and the fourth lens L4 are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 40 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 9 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in FIG. 39 (a), it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray at different heights is controlled within-0.025 to 0.03 mm. From the field curvature aberration in the sagittal direction in FIG. 39 (b), the three representative wavelength variations fall within-0.03 to 0.02 mm. From the field curvature aberration in the tangential direction in FIG. 39 (c), the three representative wavelength variations fall within the range of-0.05 to 0.10 mm. FIG. 39 (d) shows that the distortion aberration of the optical imaging lens 9 is maintained in the range of 0 to 4%. Compared with the first embodiment, the longitudinal spherical aberration, and the field curvature aberration in the sagittal and meridional directions are smaller in this embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 9 have met the imaging quality requirements of the optical system. The optical imaging lens 9 of the present embodiment expands the half field of view (HFOV) to 43.902 degrees, providing Fno of 1.600 and a system length of 5.566mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Fig. 42 to 45 are also referred to, in which fig. 42 shows a schematic cross-sectional structure of a seven-piece lens of an optical imaging lens according to a tenth embodiment of the present invention, fig. 43 shows schematic longitudinal spherical aberration and various aberrations of the optical imaging lens according to the tenth embodiment of the present invention, fig. 44 shows detailed optical data of the optical imaging lens according to the tenth embodiment of the present invention, and fig. 45 shows aspheric data of each lens of the optical imaging lens according to the tenth embodiment of the present invention. As shown in fig. 42, the optical imaging lens 10 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the tenth embodiment are substantially similar to those in the first embodiment, except that the radius of curvature of the lens surfaces, the lens thickness, the back focal length, the concave-convex configuration of the surface of the object-side surface L7a1, and the fourth lens 686l 9 have negative refractive indexes. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 44 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 10 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in (a) of FIG. 43, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray at different heights is controlled within-0.025 to 0.025 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 43, the three representative wavelength variations fall within-0.03 to 0.02 mm. From the field curvature aberration in the meridional direction in FIG. 43 (c), the three representative wavelength variations fall within the range of-0.05 to 0.06 mm. Fig. 43 (d) shows that the distortion aberration of the optical imaging lens 10 is maintained in the range of 0 to 4%. Compared with the first embodiment, the longitudinal spherical aberration, and the field curvature aberration in the sagittal and meridional directions are smaller in this embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 10 have met the imaging quality requirements of the optical system. The optical imaging lens 10 of the present embodiment expands the half field of view (HFOV) to 44.251 degrees, providing an Fno of 1.600 and a system length of 5.611mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Referring to fig. 46 to 49 together, wherein fig. 46 shows a schematic cross-sectional structure of seven-piece lenses of an optical imaging lens according to an eleventh embodiment of the invention, fig. 47 shows schematic longitudinal spherical aberration and various aberrations of the optical imaging lens according to the eleventh embodiment of the invention, fig. 48 shows detailed optical data of the optical imaging lens according to the eleventh embodiment of the invention, and fig. 49 shows aspheric data of each lens of the optical imaging lens according to the eleventh embodiment of the invention. As shown in fig. 46, the optical imaging lens 11 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the eleventh embodiment are substantially similar to those in the first embodiment, except that the radius of curvature of the lens surfaces, the lens thickness, the back focal length, the concave-convex configuration of the surface of the object-side surface L7a1, and the fourth lens 686l 9 have negative refractive indexes. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 48 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 11 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in (a) of fig. 47, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.10 to 0.08 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 47, the three representative wavelength variations fall within-0.04 to 0.04 mm. In the field curvature aberration in the tangential direction in FIG. 47 (c), the variation of the three representative wavelengths falls within-0.04 to 0.14 mm. FIG. 47 (d) shows that the distortion aberration of the optical imaging lens 11 is maintained in the range of 0 to 4.5%. From the above data, it can be seen that various optical characteristics of the optical imaging lens 11 have met the imaging quality requirements of the optical system. The optical imaging lens 11 of the present embodiment expands the half field of view (HFOV) to 42.802 degrees, providing an Fno of 1.600 and a system length of 5.682mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half viewing angle of the present embodiment is larger.

Please refer to fig. 50 to 53 together, in which fig. 50 shows a schematic cross-sectional structure diagram of a seven-piece lens of an optical imaging lens according to a twelfth embodiment of the present invention, fig. 51 shows schematic diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the twelfth embodiment of the present invention, fig. 52 shows detailed optical data of the optical imaging lens according to the twelfth embodiment of the present invention, and fig. 53 shows aspheric data of each lens of the optical imaging lens according to the twelfth embodiment of the present invention. As shown in fig. 50, the optical imaging lens 12 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex arrangement of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index arrangement of each lens in the twelfth embodiment are substantially similar to those in the first embodiment, except that the radius of curvature, the lens thickness, the back focal length, and the concave-convex arrangement of the surface of the object-side surface L7a1 in the sixth embodiment are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 52 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 12 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in FIG. 51 (a), it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis light ray with different heights is controlled within-0.025 to 0.045 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 51, the three representative wavelength variations fall within-0.05 to 0.05 mm. From the field curvature aberration in the tangential direction in FIG. 51 (c), the three representative wavelength variations fall within the range of-0.05 to 0.25 mm. FIG. 51 (d) shows that the distortion aberration of the optical imaging lens 12 is maintained in the range of 0 to 4%. The longitudinal spherical aberration is smaller in this embodiment compared with the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 12 have met the imaging quality requirements of the optical system. The optical imaging lens 12 of the present embodiment expands the half field of view (HFOV) to 44.202 degrees, providing an Fno of 1.600 and a system length of 5.528mm, while effectively providing better imaging quality compared to conventional optical lenses. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Referring to fig. 54 to 57 together, fig. 54 shows a schematic cross-sectional structure of seven lens elements of an optical imaging lens according to a thirteenth embodiment of the invention, fig. 55 shows schematic longitudinal spherical aberration and various aberrations of the optical imaging lens according to the thirteenth embodiment of the invention, fig. 56 shows detailed optical data of the optical imaging lens according to the thirteenth embodiment of the invention, and fig. 57 shows aspheric data of each lens element of the optical imaging lens according to the thirteenth embodiment of the invention. As shown in fig. 54, the optical imaging lens 13 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the thirteenth embodiment are substantially similar to those in the first embodiment, except that the positive and negative refractive index of the curvature radius, the lens thickness, the back focal length, the concave-convex configuration of the object-side surface L7a1, and the positive and negative refractive index of the fourth lens L4 are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 56 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 13 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in (a) of FIG. 55, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis light ray of different heights is controlled within-0.035 to 0.02 mm. From the field curvature aberration in the sagittal direction in (b) of FIG. 55, the three representative wavelength variations fall within-0.03 to 0.02 mm. In the field curvature aberration in the tangential direction in FIG. 55 (c), the three representative wavelength variations fall within the range of-0.08 to 0.08 mm. FIG. 55 (d) shows that the distortion aberration of the optical imaging lens 13 is maintained in the range of 0 to 3.5%. Compared with the first embodiment, the present embodiment has smaller longitudinal spherical aberration, sagittal, field curvature aberration in the meridional direction, and distortion aberration. From the above data, it can be seen that various optical characteristics of the optical imaging lens 13 have met the imaging quality requirements of the optical system. The optical imaging lens 13 of the present embodiment expands the half field of view (HFOV) to 43.534 degrees, providing an Fno of 1.600 and a system length of 5.686mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half viewing angle of the present embodiment is larger.

Please refer to fig. 58 to fig. 61 together, in which fig. 58 shows a schematic cross-sectional structure diagram of a seven-piece lens of an optical imaging lens according to a fourteenth embodiment of the invention, fig. 59 shows schematic diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens according to the fourteenth embodiment of the invention, fig. 60 shows detailed optical data of the optical imaging lens according to the fourteenth embodiment of the invention, and fig. 61 shows aspheric data of each lens of the optical imaging lens according to the fourteenth embodiment of the invention. As shown in fig. 58, the optical imaging lens 14 of the present embodiment includes, in order from an object side a1 to an image side a2, an aperture stop STO, a first lens element L1, a second lens element L2, a third lens element L3, a fourth lens element L4, a fifth lens element L5, a sixth lens element L6 and a seventh lens element L7.

The concave-convex configuration of the lens surfaces of the object-side surfaces L1a1, L2a1, L3a1, L4a1, L5a1, and L6a1 facing the object side a1 and the image-side surfaces L1a2, L2a2, L3a2, L4a2, L5a2, L6a2, and L7a2 facing the image side a2 and the positive and negative refractive index configurations of the first lens L1, the second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 in the fourteenth embodiment are substantially similar to those in the first embodiment, except that the radius of curvature of the lens surfaces, the lens thickness, the back focal length, the concave-convex configuration of the surface of the object-side surface L7a1, and the negative refractive index of the fourth lens L4 in the sixth embodiment are different from those in the first embodiment. Specifically, the difference in the arrangement of the surface irregularities is that the circumferential region L7A1P of the object-side surface L7A1 of the seventh lens L7 is concave. Please refer to fig. 60 for the values of the optical characteristics and the distances of the lenses of the optical imaging lens 14 of the present embodiment. With respect to the values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G + G), (T + T)/G, (G + T)/(G + G), (T + T + AAG)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T + T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G + G), (T + T)/G, EFL/BFL, T/(G + T) and AAG/(T + T), refer to FIG. 62B.

From the longitudinal spherical aberration in (a) of fig. 59, it can be seen from the deflection amplitude of each curve that the deviation of the imaging point of the off-axis ray of different heights is controlled within-0.04 to 0.02 mm. From the field curvature aberration in the sagittal direction in (b) of fig. 59, the three representative wavelength variations fall within-0.04 to 0.02 mm. In the field curvature aberration in the tangential direction in FIG. 59 (c), the variation of the three representative wavelengths falls within-0.08 to 0.14 mm. FIG. 59 (d) shows that the distortion aberration of the optical imaging lens 14 is maintained in the range of 0 to 4.5%. The longitudinal spherical aberration is smaller in this embodiment compared with the first embodiment.

From the above data, it can be seen that various optical characteristics of the optical imaging lens 14 have met the imaging quality requirements of the optical system. The optical imaging lens 14 of the present embodiment expands the half field of view (HFOV) to 45.069 degrees, providing an Fno of 1.600 and a system length of 5.514mm, and effectively providing better imaging quality compared to the conventional optical lens. Compared with the first embodiment, the half-viewing angle of the present embodiment is larger and the system length is shorter.

Fig. 62A and 62B collectively list values of (EFL + ALT)/D, (T + G + T)/T, EFL/(T + G + T), (T + AAG)/T, (T + T)/T, AAG/(G + G), (T + T)/G, (G + T)/(G + G), (T + T)/BFL, (EFL + T)/AAG, (T + G + T)/T, TTL/(T + T), ALT/(T + G), (G + T)/(G + T), TL/(G + T + G), (T + T)/G, EFL/BFL, T/(G + T), and AAG/(T), of the above fourteen embodiments, and detailed optical data of each embodiment, it can be seen that the optical imaging lens of the present invention can surely satisfy the aforementioned conditional expressions (1) and/or (2) 19 At least any one of them. Furthermore, the range of values within the maximum and minimum values obtained from the combination of the optical parameters disclosed in the embodiments can be considered as the scope of the present invention.

The longitudinal spherical aberration, the field curvature aberration and the distortion aberration of each embodiment of the optical imaging lens all accord with the use specification. In addition, the three off-axis light beams with different wavelengths at different heights are all concentrated near the imaging point, and the deviation of the imaging point of the off-axis light beams with different heights can be seen from the deviation amplitude of each curve, so that the off-axis light beam has good spherical aberration, aberration and distortion inhibition capability. Further referring to the imaging quality data, the distances between the three representative wavelengths are also quite close, showing that the present invention has good concentration of light of different wavelengths and excellent dispersion suppression capability in various states. In summary, the present invention can generate excellent image quality by the design and mutual matching of the lenses.

The foregoing describes a number of different embodiments in accordance with the present invention, in which the various features may be implemented in single or in various combinations. Therefore, the present invention is disclosed as illustrative embodiments which illustrate the principles of the present invention and should not be construed as limiting the invention to the disclosed embodiments. Furthermore, the foregoing description and the accompanying drawings are only illustrative of the present invention and are not intended to limit the present invention. Variations or combinations of the other components are possible without departing from the spirit and scope of the invention. In addition, the ranges of values within the maximum and minimum values obtained from the combination ratios of the optical parameters disclosed in the embodiments of the present invention can be implemented.