阅读说明：本技术 光学透镜、光学透镜组、车灯系统及车辆 (Optical lens, optical lens group, car light system and vehicle ) 是由 张洁 董世琨 孟凡 陈佳缘 于 2020-07-01 设计创作，主要内容包括：本发明涉及车辆光学元件,公开了一种光学透镜,包括入光部和出光部,所述入光部形成有第一单方位校直面(1),所述出光部形成有第二单方位校直面(2),所述第一单方位校直面(1)的校直方位与第二单方位校直面(2)的校直方位相互垂直,且所述第一单方位校直面(1)与第二单方位校直面(2)共同形成所述光学透镜的焦点或聚焦区域。本发明还公开了一种光学透镜组、车灯系统及车辆。本发明的光学透镜能够满足车灯照明光形各向异性的要求,形成非对称光形。(The invention relates to an optical element of a vehicle, and discloses an optical lens, which comprises an incident part and an emergent part, wherein the incident part is provided with a first single-directional straightening surface (1), the emergent part is provided with a second single-directional straightening surface (2), the straightening direction of the first single-directional straightening surface (1) is vertical to that of the second single-directional straightening surface (2), and the first single-directional straightening surface (1) and the second single-directional straightening surface (2) jointly form a focus or a focusing area of the optical lens. The invention also discloses an optical lens group, a car lamp system and a car. The optical lens can meet the requirement of the anisotropy of the lighting light shape of the car lamp and form an asymmetric light shape.)

1. An optical lens comprises an incident portion and an emergent portion, and is characterized in that the incident portion is provided with a first single-directional straightening surface (1), the emergent portion is provided with a second single-directional straightening surface (2), the straightening direction of the first single-directional straightening surface (1) is perpendicular to that of the second single-directional straightening surface (2), and the first single-directional straightening surface (1) and the second single-directional straightening surface (2) jointly form a focus or a focusing area of the optical lens.

2. The optical lens according to claim 1, wherein the first unidirectional alignment surface (1) and the second unidirectional alignment surface (2) are both curved surfaces formed by stretching a collimation curve along a normal direction of a plane where the collimation curve is located.

3. The optical lens according to claim 2, wherein the first and second unidirectional alignment surfaces (1, 2) are cylindrical or cylinder-like.

4. The optical lens according to claim 3, wherein the first and second unidirectional alignment surfaces (1, 2) are both cylindrical surfaces.

5. The optical lens according to claim 1, wherein the first and second unidirectional collimating surfaces (1, 2) are both stepped fresnel cylinders.

6. The optical lens according to claim 1, wherein one of the first and second unidirectional collimating surfaces (1, 2) is a cylindrical surface and the other is a stepped fresnel cylindrical surface.

7. The optical lens according to any of the claims 1 to 6, wherein one of the alignment orientation of the first uni-directional alignment surface (1) and the alignment orientation of the second uni-directional alignment surface (2) is vertical and the other is horizontal.

8. The optical lens according to any one of claims 1 to 6, wherein the first and second uni-directional collimating surfaces (1, 2) are mutually matched such that the focal lengths of the two sides of the optical lens are different to form an asymmetric optical shape.

9. An optical lens group is characterized by comprising a first unidirectional collimating lens group (6) and a second unidirectional collimating lens group (7), wherein the first unidirectional collimating lens group (6) and the second unidirectional collimating lens group (7) jointly form a focus or a focusing area of the optical lens group, and the alignment orientation of the first unidirectional collimating lens group (6) is perpendicular to that of the second unidirectional collimating lens group (7).

10. An optical lens group according to claim 9, characterised in that said first unidirectional collimating lens group (6) and said second unidirectional collimating lens group (7) each consist of at least one unidirectional collimating lens.

11. The optical lens assembly of claim 10, wherein one or both of the incident surface and the exit surface of the collimating lens are a single-direction collimating curved surface having the same collimating direction.

12. An optical lens group according to claim 9, characterised in that said first (6) and second (7) unidirectional collimating lens groups are connected by a side wall.

13. A vehicle lamp system characterized by comprising the optical lens according to any one of claims 1 to 8 or the optical lens group according to any one of claims 9 to 12.

14. The vehicle lamp system according to claim 13, further comprising a light source (3), the light source (3) being arranged at a focal point or a focusing area of the optical lens or the optical lens group; alternatively, the first and second electrodes may be,

the device also comprises a light source (3) and a primary optical element (4), wherein the primary optical element (4) is arranged to converge the light emitted by the light source (3) to a focus point or a focusing area of the optical lens or the optical lens group and introduce the light into the optical lens or the optical lens group.

15. A vehicle characterized by comprising a lamp system according to claim 13 or 14.

Technical Field

The present invention relates to vehicle optical elements, and in particular to an optical lens. The invention also relates to an optical lens group, a vehicle lamp system with the optical lens or the optical lens group and a vehicle with the vehicle lamp system.

Background

The car light is a lamp on a vehicle, is a lighting tool for the vehicle to run on a road at night, is a prompting tool for sending various vehicle running signals, and has a very important role in ensuring the safe running of the vehicle. With the development of social economy, the automobile industry develops, and with the continuous development of automobile lighting technology, more requirements are put forward on the functions of the automobile lamp.

In an illumination module for implementing an illumination function of a vehicle lamp, a collimating optical element is generally disposed to obtain approximately parallel emergent light rays, such as a hyperboloid collimating lens, a curved surface of which is a revolution curved surface based on an optical axis of the lens, and an imaging characteristic of which is isotropic.

However, the illumination light shape of the vehicle lamp is required to be anisotropic, for example, the up-down illumination angle is small, and the left-right illumination angle is large; therefore, the car lamp lighting system based on the collimating lens needs to form a basic light shape with a certain width through an additional optical system and then image the basic light shape to the road surface through the collimating lens, so that the structure is relatively complex.

Therefore, there is a need to design a new type of optical lens to overcome or alleviate the above technical problems.

Disclosure of Invention

The invention aims to provide an optical lens which can meet the requirement of anisotropy of lighting light shape of a car lamp and form an asymmetric light shape.

The invention further aims to provide an optical lens group which can meet the requirement of anisotropy of the lighting light shape of the car lamp and form an asymmetric light shape.

A further object of the present invention is to provide a vehicle lamp system that can reduce the structural size of a vehicle lamp.

In addition, the object of the invention is to provide a vehicle which has a better lighting effect.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

an optical lens comprises an incident part and an emergent part, wherein the incident part is provided with a first single-directional alignment surface, the emergent part is provided with a second single-directional alignment surface, the alignment direction of the first single-directional alignment surface is perpendicular to the alignment direction of the second single-directional alignment surface, and the first single-directional alignment surface and the second single-directional alignment surface jointly form a focus or a focusing area of the optical lens.

Preferably, the first unidirectional alignment surface and the second unidirectional alignment surface are both curved surfaces formed by stretching a collimation curve along a normal direction of a plane where the collimation curve is located.

More preferably, the first single-directional straightening surface and the second single-directional straightening surface are both cylindrical surfaces or cylinder-like surfaces.

Further, the first single-directional straightening surface and the second single-directional straightening surface are both cylindrical surfaces.

Preferably, the first single-directional straightening surface and the second single-directional straightening surface are both stepped fresnel cylindrical surfaces.

Further, one of the first single-directional straightening surface and the second single-directional straightening surface is a cylindrical surface, and the other one of the first single-directional straightening surface and the second single-directional straightening surface is a stepped Fresnel cylindrical surface.

Specifically, one of the alignment orientation of the first unidirectional alignment surface and the alignment orientation of the second unidirectional alignment surface is a vertical direction, and the other one is a horizontal direction.

More specifically, the first single-directional straightening surface and the second single-directional straightening surface are matched with each other to enable focal lengths of two sides of the optical lens to be different, so that an asymmetric optical shape can be formed.

Moreover, the invention also provides an optical lens group, which comprises a first unidirectional collimating lens group and a second unidirectional collimating lens group, wherein the first unidirectional collimating lens group and the second unidirectional collimating lens group jointly form a focus or a focusing area of the optical lens group, and the alignment direction of the first unidirectional collimating lens group is perpendicular to that of the second unidirectional collimating lens group.

Preferably, the first unidirectional collimating lens group and the second unidirectional collimating lens group are both composed of at least one unidirectional collimating lens.

More preferably, one of the incident surface and the exit surface of the unidirectional collimating lens is a unidirectional collimating curved surface or both of the incident surface and the exit surface are unidirectional collimating curved surfaces with the same collimating direction.

Optionally, the first unidirectional collimating lens group and the second unidirectional collimating lens group are connected through a side wall.

In addition, the invention also provides a vehicle lamp system which comprises the optical lens or the optical lens group in any technical scheme.

Typically, a light source is further included, the light source being arranged at a focal point or a focusing region of the optical lens or the optical lens group; or, the optical lens further comprises a light source and a primary optical element, wherein the primary optical element is arranged to converge the light emitted by the light source to the focal point or the focusing area of the optical lens or the optical lens group and introduce the light into the optical lens or the optical lens group.

In addition, the invention also provides a vehicle which comprises the lamp system in any one of the technical schemes.

Through the technical scheme, the invention has the following beneficial effects:

in the basic technical scheme of the invention, the optical lens comprises a first single-directional straightening surface and a second single-directional straightening surface, wherein the first single-directional straightening surface has the characteristic of single-directional collimation on light; for example, there is no refraction or at most very weak refraction (the cutting curve is almost a straight line) in a cross-sectional direction of the first single-directional straightening surface, while there is a maximum refraction effect in a direction perpendicular to the cross-section, i.e. the alignment direction of the first single-directional straightening surface is single-directional; the second single-directional straightening surface has the same characteristic of single-directional collimation of the light, namely the straightening direction of the second single-directional straightening surface is also single-directional; however, the alignment direction of the first single-directional alignment surface is perpendicular to the alignment direction of the second single-directional alignment surface, so that an asymmetric light shape can be formed, wherein the asymmetric light shape mainly means that when a square light emitting surface is imaged, the light shape is rectangular, and is not an isotropic approximately square light shape formed by the existing collimating lens. In addition, the optical lens is provided with a focus or a focusing area, and the light source is placed near the focus or in the focusing area, so that a better optical effect can be obtained, and the utilization rate of light energy is higher.

In addition, the invention can also realize the same functions as the optical lens in the form of an optical lens group.

Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.

Drawings

FIG. 1 is a schematic perspective view of an optical lens according to a first embodiment of the present invention;

FIG. 2 is a screen illumination graph of the optical shape of an optical lens according to an embodiment of the present invention;

FIG. 3 is a screen illumination graph of light shape when a square light emitting face is imaged by a conventional lens;

FIG. 4 is a top view of the optical lens of FIG. 1;

FIG. 5 is a front view of the optical lens of FIG. 1;

FIG. 6 is a right side view of the optical lens of FIG. 1;

FIG. 7 is a schematic perspective view of an optical lens according to a second embodiment of the present invention;

FIG. 8 is a schematic perspective view of the optical path of a vehicular lamp system according to an embodiment of the present invention, wherein the optical lens is the optical lens according to a second embodiment;

FIG. 9 is a front view of the structure of an optical lens according to a third embodiment of the present invention;

FIG. 10 is a left side view of the structure of an optical lens according to a third embodiment of the present invention;

FIG. 11 is a bottom view of the structure of an optical lens of the third embodiment of the present invention;

FIG. 12 is a schematic perspective view of an optical lens according to a third embodiment of the present invention;

FIG. 13 is a schematic perspective view of an optical path of a vehicular lamp system according to a fourth embodiment of the present invention, wherein the optical lens is the optical lens according to the first embodiment;

FIG. 14 is a schematic diagram showing the light shape effect of a vehicular lamp system according to a fourth embodiment of the present invention, wherein the optical lens is the optical lens according to the first embodiment;

FIG. 15 is one of schematic optical path diagrams of an optical lens according to a fourth embodiment of the present invention;

FIG. 16 is a second schematic optical path diagram of an optical lens according to a fourth embodiment of the present invention;

FIG. 17 is a schematic perspective view of a light path of a prior art lighting module, wherein the optical lens is a conventional hyperboloid collimating lens;

FIG. 18 is a schematic diagram of the light shape effect of a prior art lighting module in which the optical lens is a conventional hyperboloid collimating lens;

FIG. 19 is a schematic perspective view of an optical lens assembly according to a fifth embodiment of the present invention;

FIG. 20 is a schematic perspective view of an optical lens assembly according to a sixth embodiment of the present invention, wherein the first collimating lens group and the second collimating lens group are both composed of two collimating lenses;

FIG. 21 is a schematic perspective view of an optical lens assembly according to a seventh embodiment of the present invention, wherein the first collimating lens assembly and the second collimating lens assembly are connected by a sidewall;

FIG. 22 is a top view of the optical lens assembly of FIG. 21;

FIG. 23 is a front view of the optical lens assembly of FIG. 21;

FIG. 24 is a schematic diagram of the optical paths of an optical lens assembly according to a seventh embodiment of the present invention;

fig. 25 is a second schematic optical path diagram of an optical lens assembly according to a seventh embodiment of the present invention.

Description of the reference numerals

1 first single-directional straightening surface 2 second single-directional straightening surface

3 light source 4 Primary optical element

5 existing hyperboloid collimating lens 6 first unidirectional collimating lens group

7 second unidirectional collimating lens group

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "arranged" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be understood that, for the sake of convenience in describing the present invention and simplifying the description, the terms "horizontal" and "vertical" are orientation terms related to the installation direction of the optical lens on the vehicle, and in general, the light emitting direction of the optical lens is substantially the same as the light emitting direction of the vehicle; the terminology is based on the orientations and positional relationships illustrated in the drawings, and is not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention; also, the directional terms of the present invention should be understood in conjunction with the actual installation state.

As shown in fig. 1, 2, 4 to 16, an optical lens according to a basic embodiment of the present invention includes an incident portion and an emergent portion, the incident portion is formed with a first single-directional aligning surface 1, the emergent portion is formed with a second single-directional aligning surface 2, an aligning direction of the first single-directional aligning surface 1 is perpendicular to an aligning direction of the second single-directional aligning surface 2, and the first single-directional aligning surface 1 and the second single-directional aligning surface 2 together form a focus or a focusing area of the optical lens.

In practical use, the alignment orientations of the first and second unidirectional alignment surfaces 1 and 2 of the optical lens are generally the same as the vertical direction and the horizontal direction of the vehicle, that is, the alignment orientation of the first unidirectional alignment surface 1 is limited in the horizontal direction or the vertical direction, and correspondingly, the alignment orientation of the second unidirectional alignment surface 2 is limited in the vertical direction or the horizontal direction; for simplicity of description, the optical lens of the present invention will be described below by taking the example that the alignment direction of the first single-directional alignment surface 1 is limited in the horizontal direction and the alignment direction of the second single-directional alignment surface 2 is limited in the vertical direction.

In the above basic technical solution, the first single-directional collimating surface 1 has an optical characteristic of single-directional collimation on the light emitted by the light source 3, and the "collimating direction" can be understood as follows: in the horizontal cross section, referring to fig. 15, the first single-directional straightening surface 1 has a convergence effect and can collimate light, and in contrast to fig. 16, in the vertical cross section, the first single-directional straightening surface 1 has no refraction or at most only a very weak refraction effect (the cutting curve in the vertical direction is almost a straight line) to light, that is, the first single-directional straightening surface 1 has a single-directional collimation effect to light within the range of the horizontal cross section, that is, the straightening orientation of the first single-directional straightening surface 1 is limited in the horizontal direction. The second single-directional straightening surface 2 has the optical characteristics of single-directional collimation on the light emitted by the light source 3 similar to the first single-directional straightening surface 1, and the difference lies in that: in the horizontal section, the second single-directional straightening surface 2 has no refraction effect or only a very weak refraction effect at most on the light, and in the vertical section, the second single-directional straightening surface 2 has a convergence effect and can have a certain collimation effect on the light, namely, the second single-directional straightening surface 2 has a single-directional collimation effect on the light within the position range of the vertical section, namely, the collimation direction of the second single-directional straightening surface 2 is limited in the vertical direction. Therefore, the alignment direction of the first single-directional alignment surface 1 is perpendicular to the alignment direction of the second single-directional alignment surface 2; referring to fig. 15 and 16, since the first and second uni-directional collimating surfaces 1 and 2 have a lens thickness a therebetween, and the first uni-directional collimating surface 1 is closer to the focal point or focal region, the focal length is smaller relative to the second uni-directional collimating surface 2; according to the imaging principle, the smaller the focal length is, the larger the image is, so that the difference exists between the first single-directional straightening surface 1 and the second single-directional straightening surface 2 in imaging, and the imaging is larger than that of the second single-directional straightening surface 2 in the straightening direction of the first single-directional straightening surface 1 close to the focal point or the focal area, namely the light diffusion degree of the light source 3 in the straightening direction of the first single-directional straightening surface 1 after passing through the optical lens is larger than that in the straightening direction of the second single-directional straightening surface 2; the imaging difference is determined by the refractive index of the lens and the thickness A of the lens between the first single-directional straightening surface 1 and the second single-directional straightening surface 2. Thus, a light source 3 with a square light emitting surface is arranged near the focus or in the focus area of the optical lens, so that light rays emitted by the light source 3 sequentially pass through a first single-directional straightening surface 1 and a second single-directional straightening surface 2 to form an asymmetric light shape, wherein the asymmetric light shape refers to a light shape with a large difference in length and width, such as a rectangular light shape; for example, the second unidirectional straightening surface 2 stretched in the horizontal direction is combined with the first unidirectional straightening surface 1 stretched in the vertical direction, so that the diffusion degree of light rays in the horizontal direction is greater than that in the vertical direction, and a light shape which is wider in the horizontal direction and relatively narrower in the vertical direction can be obtained; conversely, the second single-directional straightening surface 2 stretched in the vertical direction is combined with the first directional straightening surface 1 stretched in the horizontal direction, so that the diffusion degree of the light rays in the vertical direction is greater than that in the horizontal direction, and a light shape which is wider in the vertical direction and narrower in the horizontal direction as shown in fig. 2 can be obtained; fig. 3 is a screen illuminance diagram of a light shape when a square light emitting surface is imaged by a conventional lens, and comparing the light shapes of fig. 2 and 3, it is apparent that the light shape obtained by the optical lens of the present invention has a significant asymmetry.

Specifically, as shown in fig. 13, 15 and 16, the first unidirectional collimating surface 1 can be regarded as a curved surface formed by stretching a collimating curve in a horizontal section in a direction normal to a plane on which the collimating curve is located, that is, a curved surface formed by stretching in a vertical direction, and similarly, the second unidirectional collimating surface 2 can be regarded as a curved surface formed by stretching a collimating curve in a vertical section in a direction normal to a plane on which the collimating curve is located, that is, a curved surface formed by stretching in a horizontal direction.

Further, the curved surface formed by the first single-directional straightening surface 1 and the curved surface formed by the second single-directional straightening surface 2 can be cylindrical surfaces; the cylindrical surface can be understood as an optical curved surface, taking the first single-directional straightening surface 1 as an example, the optical curved surface has a convergence effect in a horizontal section and can have a certain collimation effect on light rays, and in a vertical section, the optical curved surface has no refraction effect or only has a very weak refraction effect at most (a cutting curve in the vertical direction is almost a straight line); wherein, the cutting curve in the horizontal direction is not necessarily circular arc; furthermore, the curved surface formed by the first single-directional straightening surface 1 and the curved surface formed by the second single-directional straightening surface 2 can be cylinder-like surfaces, and the cylinder-like surfaces are curved surfaces which are close to the cylindrical surfaces in shape and also have the technical effect similar to the cylindrical surfaces; preferably, a horizontal cutting curve of the cylindrical surface formed by the first single-directional straightening surface 1 can be made into a circular arc shape; similarly, the method is also applicable to the cylindrical structure formed by the second single-directional straightening surface 2.

Moreover, the asymmetry of the asymmetric optical shape formed by the above technical solution is caused by different focal lengths at two sides of the optical lens, and may also be related to a ratio of the first single-directional straightening surface 1 to the second single-directional straightening surface 2 to the magnification of the optical shape, and the ratio of the magnification depends on a distance between the first single-directional straightening surface 1 and the second single-directional straightening surface 2, and the larger the distance is, the larger the ratio is, the more obvious the asymmetry is; comparing the optical lens of fig. 13 with the optical lens shown in fig. 7, the thickness of the optical lens can be reduced when the ratio is small.

In addition, as shown in fig. 9 to 12, the first single-directional collimating surface 1 and the second single-directional collimating surface 2 may also be stepped fresnel cylinders, where the "stepped fresnel cylinders" are realized by stretching a fresnel curve and have a unidirectional collimating effect on light, and the "fresnel curve" is a curved shape where a plane passing through an optical axis of the fresnel lens and an intersection of surfaces of the fresnel lens having a plurality of concentric circles have the same or similar shape.

Further, the stepped fresnel cylinder is formed by a series of cylinder structures arranged horizontally or vertically.

The stepped Fresnel cylindrical surface structure can collimate light rays as with the cylindrical surface structure, and the stepped Fresnel cylindrical surface formed by the first single-directional collimating surface 1 and the stepped Fresnel cylindrical surface formed by the second single-directional collimating surface 2 are arranged in a mutually perpendicular form, so that an asymmetrical light shape can also be formed.

The two technical solutions of the first single-directional straightening surface 1 and the second single-directional straightening surface 2 adopting the cylindrical surface or the stepped fresnel cylindrical surface are explained above, and it can be understood that simple deformation can be performed on the first single-directional straightening surface 1 and the second single-directional straightening surface 2, for example, the first single-directional straightening surface 1 is a cylindrical surface and the second single-directional straightening surface 2 is a stepped fresnel cylindrical surface, or the first single-directional straightening surface 1 is a stepped fresnel cylindrical surface and the second single-directional straightening surface 2 is a cylindrical surface, and the straightening orientations of the two are perpendicular to each other.

It should be noted that, the optical lens of the present invention is described above by taking the case where the alignment direction of the first unidirectional alignment surface 1 is in the horizontal direction and the alignment direction of the second unidirectional alignment surface 2 is in the vertical direction as an example, however, the above embodiments are also applicable to the case where the alignment direction of the first unidirectional alignment surface 1 is in the vertical direction and the alignment direction of the second unidirectional alignment surface 2 is in the horizontal direction, for example, in the embodiment of fig. 1, from the arrangement direction of the optical lens in fig. 1, the alignment direction of the cylindrical surface on the first unidirectional alignment surface 1 is in the vertical direction, and the alignment direction of the cylindrical surface on the second unidirectional alignment surface 2 is in the horizontal direction; alternatively, in the embodiment of fig. 12, from the arrangement orientation of the optical lenses in fig. 12, the stepped fresnel cylinder on the first single-directional straightening surface 1 extends in the horizontal direction, and the alignment orientation thereof is in the vertical direction, and the stepped fresnel cylinder on the second single-directional straightening surface 2 extends in the vertical direction, and the alignment direction thereof is in the horizontal direction.

The structure of the optical lens is designed, and the first single-directional straightening surface 1 and the second single-directional straightening surface 2 with mutually perpendicular straightening directions are arranged at the light incoming part and the light outgoing part of the optical lens to form an asymmetric optical shape; of course, the optical lens of the present invention can also be designed into the structural form of an optical lens group; further, as shown in fig. 19 to 25, the optical lens assembly is composed of a first unidirectional collimating lens group 6 and a second unidirectional collimating lens group 7, the first unidirectional collimating lens group 6 and the second unidirectional collimating lens group 7 together form a focal point or a focusing area of the optical lens assembly of the present invention, and an alignment orientation of the first unidirectional collimating lens group 6 and an alignment orientation of the second unidirectional collimating lens group 7 are perpendicular to each other; similar to the optical lens of the present invention, as can be seen from the light paths shown in fig. 24 and 25, the first unidirectional collimating lens group 6 and the second unidirectional collimating lens group 7 respectively have the optical characteristic of single-direction collimation for the light emitted by the light source 3, that is, the collimation direction of the first unidirectional collimating lens group 6 is a horizontal direction, and the collimation direction of the second unidirectional collimating lens group 7 is a vertical direction; in particular, the first one-way collimating lens group 6 and the second one-way collimating lens group 7 are both composed of at least one-way collimating lens, for example, FIG. 19 shows an example in which the first and second one-way collimating lens groups 6 and 7 are each composed of one-way collimating lens, figure 20 shows an example where the first and second unidirectional collimating lens groups 6 and 7 are each composed of two unidirectional collimating lenses, it is understood that the first unidirectional collimating lens group 6 and the second unidirectional collimating lens group 7 can be composed of more unidirectional collimating lenses, as long as the optical characteristics of unidirectional collimation of the first unidirectional collimating lens group 6 and the second unidirectional collimating lens group 7 are ensured, namely, the collimation directions of the plurality of unidirectional collimating lenses in the first unidirectional collimating lens group 6 are the same, and the collimation directions of the plurality of unidirectional collimating lenses in the second unidirectional collimating lens group 7 are the same; that is to say, the one-way collimating lens may be a one-way collimating curved surface whose incident surface or exit surface is shown in fig. 24 or fig. 25, or the one-way collimating lens may also be a one-way collimating curved surface whose incident surface and exit surface are both shown in fig. 19, where the "one-way collimating curved surface" refers to a curved surface having the same function as the first one-way collimating surface 1 or the second one-way collimating surface 2 of the optical lens of the present invention, and specifically may be a cylindrical surface, a quasi-cylindrical surface, or a stepped fresnel cylindrical surface, etc.; furthermore, as shown in fig. 21 to 23, two ends of the first unidirectional collimating lens assembly 6 and two ends of the second unidirectional collimating lens assembly 7 are respectively and correspondingly connected through sidewalls, and the two are connected into an integral piece, so as to effectively ensure the stability of the optical system.

The optical lens of the present invention is adapted to a general vehicle lamp system, as shown in fig. 1, 7 and 12, the light source 3 is disposed near the focal point or in the focusing region of the optical lens, or as shown in fig. 8 and 13, the optical lens of the present invention can be used as a secondary optical element, the primary optical element 4 converges the light emitted from the light source 3 to the focal point or the focusing region of the optical lens, and then the light is incident on the optical lens, and as the primary optical element 4 is provided with a cut-off structure for forming a cut-off line, in combination with fig. 13, a light shape having a cut-off line can be obtained as shown in fig. 14; the primary optical element 4 may be an optical element such as a mirror, a condenser, or a light-collecting cup. Similarly, the optical lens assembly of the present invention can be adapted to a general vehicle lamp system to obtain the same function.

Fig. 17 shows an embodiment of a lighting module in the prior art, which uses a hyperboloid collimating lens 5 as a secondary optical element, the primary optical element 4 converges the light emitted from the light source 3 and then emits the light to the hyperboloid collimating lens 5, and due to the cut-off structure arranged on the primary optical element 4, a light shape with a cut-off line can be obtained as shown in fig. 18. Comparing the light shapes shown in fig. 14 and 18, it is clear that the light shape shown in fig. 18 has a dimension close to the vertical direction, and is approximately square; however, the size of the light shape shown in fig. 14 is greatly different from that of the light shape in the vertical direction, the diffusion degree of the light emitted from the light source 3 in the horizontal direction is greater than that in the vertical direction, and the light shape is approximately rectangular; compared with the prior art, the optical lens can enable the light shape to have obvious asymmetry, does not need to add an additional optical element to enable the size of the light shape in the horizontal direction to be different from that of the light shape in the vertical direction, and simplifies the structure of the car lamp to a certain extent.

In addition, since the optical lens of the present invention can form a rectangular light shape, when arranging the lamp system in the lamp, taking two lamp systems as an example, one lamp system is arranged in a conventional manner, i.e., a rectangular light shape along the horizontal direction, and the other lamp system is arranged obliquely, so that the light shape formed by emitting light through the corresponding optical lens is a rectangular light shape with a certain inclination, and the two rectangular light shapes are overlapped to form a light shape with a cut-off line. In the above embodiments, the optical lens may be replaced with the optical lens group of the present invention, and the same function may be achieved as well.

The vehicle of the invention adopts the optical lens or the optical lens group, and for the corresponding vehicle lamp design, the vehicle lamp can have a flat and wide shape, so that the front part of the vehicle can tend to a streamline design, and the noise generated by the windward can be reduced conveniently; moreover, the LED lamp has a good lighting effect.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.