CN114963125A

CN114963125A - Lens and lamp

Info

Publication number: CN114963125A
Application number: CN202210845939.2A
Authority: CN
Inventors: 赵健; 李志成; 任婷; 高明昊
Original assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Current assignee: Opple Lighting Co Ltd; Suzhou Op Lighting Co Ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-08-30

Abstract

The invention provides a lens and a lamp, wherein the lens comprises an inwards concave light inlet cavity and an inwards concave light outlet cavity which is positioned below the light inlet cavity, a first light inlet surface is arranged in the light inlet cavity, a first light outlet surface opposite to the first light inlet surface is arranged in the light outlet cavity, a first microstructure is arranged on the first light inlet surface, a second microstructure is arranged on the first light outlet surface, and light rays incident from the first microstructure generate primary self-mixing light through the first microstructure and are emitted out through the second microstructure to generate secondary self-mixing light. Compared with the prior art, the LED lamp has the advantages of simple structure, uniform emergent light and no yellow spots.

Description

Lens and lamp

Technical Field

The invention relates to the technical field of lighting, in particular to a lens and a lamp.

Background

The existing shelf-washing lamp generally adopts a free-form surface type structure, an injection-molded TIR structure or a lens of a starry sky structure to make the light of the lamp deflect to one side for irradiation, and for the free-form surface type structure, although the required polarization angle can be easily achieved, diffusion particles are required to be additionally added during processing to eliminate chromatic aberration, and time and material are wasted.

Accordingly, there is a need for an improved lens and lamp to solve the above problems.

Disclosure of Invention

The invention aims to provide a lens and a lamp, so as to improve the light emitting effect and improve the user experience.

In order to achieve the above object, the present invention provides a lens, including an inward concave light-in cavity and an inward concave light-out cavity located below the light-in cavity, where the light-in cavity has a first light-in surface, the light-out cavity has a first light-out surface opposite to the first light-in surface, the first light-in surface has a first microstructure, the first light-out surface has a second microstructure, and light incident from the first microstructure generates primary self-mixing light through the first microstructure and secondary self-mixing light through the second microstructure.

Optionally, the lens is in a long strip shape and configured to deflect light emitted by the light source to the first direction for emission, the first light incident surface and the first light emitting surface are both curved surfaces, the height of the first microstructure gradually increases along the first direction, the height of the second microstructure gradually decreases along the first direction, and the second microstructure is disposed on one side of the first light emitting surface close to the first direction, so that the light incident through the first light incident surface can be refracted to the first direction from the first light emitting surface.

Optionally, the first microstructure includes a plurality of mutually parallel bar-shaped protrusions, a cross section of each protrusion of the first microstructure is arc-shaped, the second microstructure includes a plurality of mutually parallel bar-shaped protrusions, and a cross section of each protrusion of the second microstructure is arc-shaped.

Optionally, the curvature of the protrusions of the first microstructure is smaller than the curvature of the protrusions of the second microstructure.

Optionally, the light incident cavity is further provided with a second light incident surface and a third light incident surface which are located on two sides of the first light incident surface, and the third light incident surface and the second light incident surface are distributed along the first direction; the lens further includes: the light source comprises a light emitting cavity, a first light control curved surface, a second light control curved surface, a third light control curved surface, a first light control curved surface and a second light control curved surface, wherein the light emitting cavity is arranged on two sides of the light emitting cavity and on the same plane, the first light control curved surface and the first light control curved surface are distributed along the first direction, the included angle between the first light control curved surface and the second light emitting surface is smaller than the included angle between the second light control curved surface and the third light emitting surface, so that light rays incident from the second light incident surface are refracted out in the first direction from the second light emitting surface after being reflected by the first light control curved surface, and the light rays incident from the third light incident surface are refracted out in the first direction from the third light emitting surface after being reflected by the second light control curved surface.

Optionally, on a plane where the second light emitting surface and the third light emitting surface are located, orthographic projections of the first microstructure and the second microstructure are at least partially overlapped.

Optionally, a distance between the second light incident surface and the third light incident surface gradually decreases from top to bottom in the vertical direction.

Optionally, the cross-sectional length of the second light incident surface is smaller than the cross-sectional length of the third light incident surface.

Optionally, the length of the cross section of the second light emitting surface is smaller than that of the cross section of the third light emitting surface.

Optionally, a concave portion recessed towards the light-entering cavity is arranged in the light-exiting cavity, and the concave portion is located between the third light-exiting surface and the second microstructure along the first direction.

Optionally, the lens further comprises: the pair of extending parts are respectively positioned at two sides of the lens and respectively extend towards the first direction and the back first direction.

Correspondingly, the technical scheme of the invention also provides a lamp which comprises the lens.

Optionally, the light source module is used for emitting light, the light source module includes the light source, the light emitting surface of light source with the minimum interval of lens on vertical direction is 0.6 ± 0.3 mm.

Optionally, the centerline of the light source is offset from the first direction by 0.5 ± 0.5mm based on the centerline of the luminaire.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

according to the lens provided by the technical scheme of the invention, through the first microstructure and the second microstructure, the light incident from the first microstructure can generate twice self-mixing light, so that the emergent light is uniform, and the problems of yellow spots and particle concentration debugging are effectively solved.

Drawings

Fig. 1 is a schematic perspective view of a lamp according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of a lamp according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of a lens according to an embodiment of the invention;

FIG. 4 is a schematic view of an installation structure of a lens and a light source module according to an embodiment of the invention;

fig. 5 is a schematic light path diagram of the first light incident surface according to an embodiment of the invention;

fig. 6 is a schematic light path diagram of a second light incident surface according to an embodiment of the invention;

fig. 7 is a schematic light path diagram of a third light incident surface according to an embodiment of the invention.

Reference numerals:

100. a light fixture;

10. a housing; 11. a support; 12. a chute;

20. a light source module; 21. a substrate; 22. a light source;

30. a lens; 31. an optical input cavity; 311. a first light-controlling curved surface; 312. a second light incident surface; 313. a first light incident surface; 3131. a first microstructure; 314. a third light incident surface; 315. a second light-controlling curved surface;

32. a light-emitting cavity; 321. a first light emitting surface; 3211. a second microstructure; 322. a recessed portion; 3221. a bevel; 33. a second light emitting surface; 34. a third light emitting surface; 35. an extension portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary detail, only the structures and/or process steps closely related to the scheme of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 to 7, in one embodiment of the present invention, a lamp 100 is disclosed, in which a lens 30 for deflecting light is disposed in the lamp 100, and the lens 30 may be made of glass, including but not limited to plexiglas PMMA, PC or resin material. The lens 30 uses TIR structure to control light and make the light emitted from the lamp 100 more uniform after passing through the lens 30. For clarity of description, the following description will take the lens 30 as an example applied to the luminaire 100, and will describe the specific structure of the luminaire 100 in detail.

As shown in fig. 1, the luminaire 100 includes a housing 10, a light source module 20, and the lens 30, wherein the housing 10 is strip-shaped and has brackets 11 at two ends for mounting, an optical cavity (not shown) for accommodating the light source module 20 and the lens 30 is provided in the housing 10, the lens 30 is located at an opening of the optical cavity, and the light source module 20 is located between the housing 10 and the lens 30.

The light source module 20 includes: a substrate 21 and a light source 22 on the substrate 21.

The light source 22 may be a led lamp bead, and the light source 22 faces the lens 30.

Meanwhile, the substrate 21 is attached to the housing 10, so that the light source module 20 transfers heat to the housing 10. In addition, the surface of the substrate 21 is provided with an ink coating to enhance the reflection of the light source 22 to the light outgoing direction, so as to improve the light efficiency.

In other embodiments of the present invention, the housing 10 may be abutted and attached by increasing a contact area with the substrate 21 to enhance a heat dissipation efficiency, and may be specifically disposed as required, which is not limited herein. Referring to fig. 2 and 3 in conjunction with fig. 1, the lens 30 is elongated and configured to deflect the light emitted from the light source 22 in a first direction.

Specifically, referring to fig. 2 as a reference schematic, the left side of fig. 2 is defined as a first direction, and the lens 30 is used for deflecting the light emitted from the light source 22 to the first direction. In addition, continuing with fig. 2 as a reference schematic, the top and bottom in the drawing are the vertical direction of the luminaire 100. The lens 30 includes: the light source comprises a concave light inlet cavity 31 and a concave light outlet cavity 32 which is positioned below the light inlet cavity 31.

The light-entering cavity 31 is used for light incidence.

Specifically, the light incident cavity 31 faces the light source module 20, and a first light incident surface 313 is provided in the light incident cavity 31.

The light incident cavity 31 further has a second light incident surface 312 and a third light incident surface 314 therein, the second light incident surface 312 and the third light incident surface 314 are located at two sides of the first light incident surface 313, and the third light incident surface 314 and the second light incident surface 312 are distributed along the first direction.

Specifically, the second light incident surface 312 is connected to the first light incident surface 313, the third light incident surface 314 is connected to the first light incident surface 313, and the first light incident surface 313, the second light incident surface 312 and the third light incident surface 314 form the light incident cavity 31.

The light-emitting cavity 32 is used for emitting at least part of light rays.

The light emitting cavity 32 faces the outside of the lamp 100, and a first light emitting surface 321 opposite to the first light incident surface 313 is disposed in the light emitting cavity 32.

The lens 30 further includes: the first light-controlling curved surface 311 and the second light-controlling curved surface 315 are located at two sides of the light-entering cavity 31, and the second light-controlling curved surface 315 and the first light-controlling curved surface 311 are distributed along a first direction.

Specifically, the second light incident surface 312 is located between the first light control curved surface 311 and the first light incident surface 313, and the second light incident surface 312 is connected to the first light control curved surface 311 and the first light incident surface 313 respectively. The third light incident surface 314 is located between the second light control curved surface 315 and the first light incident surface 313, and the third light incident surface 314 is connected to the second light control curved surface 315 and the first light incident surface 313 respectively.

The lens 30 further includes: the light source comprises a second light emitting surface 33 and a third light emitting surface 34, the second light emitting surface 33 and the third light emitting surface 34 are located on the same plane, and the third light emitting surface 34 and the second light emitting surface 33 are distributed along the first direction.

On the plane where the second light-emitting surface 33 and the third light-emitting surface 34 are located, the orthographic projection of the light-entering cavity 31 is within the orthographic projection range of the light-exiting cavity 32.

Referring to fig. 4 to 7, the light incident cavity 31 faces the light source 22 of the light source module 20, and light rays emitted by the light source 22 are divided into three parts and are incident into the lens 30 from the second light incident surface 312, the first light incident surface 313 and the third light incident surface 314 respectively.

The light ray incident from the first light incident surface 313 is emitted from the first light emitting surface 321 in a first direction; after the light rays incident through the second light incident surface 312 pass through the light control of the first light control curved surface 311, the light rays are emitted from the second light emitting surface 33 in a direction deviated to the first direction; the light rays incident through the third light incident surface 314 are deflected to the first direction from the third light emitting surface 34 to emit out after passing through the light control of the second light control curved surface 315. Therefore, the integral illumination of a single side (in the first direction) is increased, so that the illumination requirement of an upper-layer shelf can be met, a certain illumination requirement of a lower-layer shelf can be met, and the customer experience is improved.

It can be understood that by adjusting the proportional relationship among the areas of the first light incident surface 313, the second light incident surface 312 and the third light incident surface 314, the amount of light incident on the first light incident surface 313, the second light incident surface 312 and the third light incident surface 314 can be adjusted, so as to distribute the light of the light source 22. With reference to fig. 2 and fig. 3, the first light incident surface 313 has a first microstructure 3131 thereon for mixing light, and the first light emitting surface 321 has a second microstructure 3211 thereon for mixing light.

Referring to fig. 5 in conjunction with fig. 2 and fig. 3, the light incident through the first light incident surface 313 generates a first self-mixing light in the lens 30 through the first microstructure 3131, and then generates a second self-mixing light through the second microstructure 3211 when passing through the first light emitting surface 321, so that the emergent light is uniform and has no macula lutea, and thus, the irradiation effect is good.

Referring to fig. 2, fig. 3 and fig. 5 with continued reference to fig. 1, the first light incident surface 313 and the first light emitting surface 321 are both curved surfaces, the first light emitting surface 321 is disposed closer to the first direction than the first light incident surface 313, in addition, the height of the first light incident surface 313 gradually increases along the first direction, and the height of the first light emitting surface 321 gradually decreases along the first direction, that is, the distance between the first light incident surface 313 and the first light emitting surface 321 gradually increases along the first direction, that is, the distance between the first microstructure 3131 and the second microstructure 3211 gradually increases along the first direction.

On one hand, by adjusting the degree of the increased height of the first light incident surface 313 along the first direction, the light can face the second microstructures 3211 on the first light emitting surface 321 after passing through the first light incident surface 313; on the other hand, according to the principle that the light density is larger than the light sparse refraction angle, as the height of the first light emitting surface 321 decreases in the first direction, the degree of deflection of the light emitted from the first light emitting surface 321 in the first direction is higher.

Specifically, the second microstructure 3211 is located on a side close to the first direction than the first microstructure 3131, and accordingly, orthographic projections of the first microstructure 3131 and the second microstructure 3211 are at least partially overlapped on a plane where the second light emitting surface 33 and the third light emitting surface 34 are located. In addition, the height of the first microstructure 3131 gradually increases along the first direction, and the height of the second microstructure 3211 gradually decreases along the first direction, that is, the distance between the first microstructure 3131 and the second microstructure 3211 gradually increases along the first direction.

In this embodiment, since the height of the first microstructure 3131 is gradually increased along the first direction, and the height of the second microstructure 3211 is gradually decreased along the first direction, the first microstructure 3131 and the second microstructure 3211 not only can realize secondary self-mixing, but also are more favorable for the light incident through the first light incident surface 313 to be emitted from the first light emitting surface 321 in a direction toward the first direction, so as to achieve a better light polarizing effect, further reduce stray light which is not polarized effectively, and compared with the existing full celestial star structure, the present invention further increases the illumination of a lower shelf, makes the illumination more uniform, and enhances the user experience.

The height direction of the first microstructure 3131 and the height direction of the second microstructure 3211 are the up-down direction.

Specifically, the first microstructure 3131 includes a plurality of mutually parallel strip-shaped protrusions, a cross section of each protrusion of the first microstructure 3131 is arc-shaped, the second microstructure 3211 includes a plurality of mutually parallel strip-shaped protrusions, and a cross section of each protrusion of the second microstructure 3211 is arc-shaped.

Since the first microstructure 3131 and the second microstructure 3211 are both strip-shaped protrusions, and the cross-sectional shapes of the structures of the strip-shaped protrusions are the same in the stretching direction (as shown in fig. 1) of the lens 30, the light mixing effect and the polarization effect of light in the stretching direction of the lens 30 are good in consistency, so that the illumination effect along the stretching direction of the lens 30 is more consistent, that is, the illumination defect of light and shade change is not easy to occur in the stretching direction of the lens 30. Furthermore, the raised strip structure is compatible with more light sources 22.

In addition, the injection-molded TIR frame is formed by injection molding, so the lens length is not too long, and the longer shelf needs to be spliced, which causes the fault phenomenon of the washed surface.

In this embodiment, since the first microstructure 3131 and the second microstructure 3211 are both strip-shaped protrusions, the lens can be manufactured by an extrusion process, thereby effectively solving the problem that the lens needs to be spliced due to its short size.

The curvatures between the protrusions on the first microstructure 3131 may be the same or different. Preferably, the curvatures between the protrusions on the first microstructure 3131 are the same.

Similarly, the curvatures of the protrusions on the second microstructure 3211 may be the same or different. Preferably, the curvatures of the protrusions on the second microstructure 3211 are the same.

The curvature of the protrusions of the first microstructure 3131 may be the same as or different from the curvature of the protrusions of the second microstructure 3211.

Preferably, the curvature of the protrusions of the first microstructure 3131 is smaller than that of the protrusions of the second microstructure 3211, so as to mix light better and make the illuminated surface more uniform.

In other embodiments, the first microstructure 3131 and the second microstructure 3211 may also be in other forms capable of mixing light, such as an oval shape or a bead surface, and the like, which is not limited herein.

Preferably, the light-exiting cavity 32 has a recessed portion 322 recessed toward the light-entering cavity 31, and the recessed portion 322 is located between the second microstructure 3211 and the third light-exiting surface 34. The concave portion 322 comprises an inclined surface 3221, and the concave portion 322 can reduce the volume of the lens 30, reduce the material for preparing the lens 30, and is beneficial to light weight and cost reduction. It should be noted that the inclined surface 3221 is a total reflection surface, and incident light is totally reflected on the inclined surface 3221, so that most light rays are emitted from the second microstructure 3211, thereby improving light efficiency.

With continued reference to fig. 2, fig. 3, fig. 6 and fig. 7, the second light incident surface 312 and the third light incident surface 314 are not parallel, an opening of the light incident cavity 31 toward a side close to the light source 22 is larger, that is, a distance between the second light incident surface 312 and the third light incident surface 314 gradually decreases from top to bottom along a vertical direction.

On one hand, the light incident on the second light incident surface 312 is refracted toward the first light-controlling curved surface 311 with a larger range, and the light incident on the third light incident surface 314 is refracted toward the second light-controlling curved surface 315 with a larger range, so as to improve the utilization rate of the first light-controlling curved surface 311 and the second light-controlling curved surface 315.

On the other hand, the mounting is facilitated, and the allowance for mounting errors is large. Specifically, as shown in fig. 5, when the light source 22 is an led lamp bead, the minimum distance between the light emitting surface of the led lamp bead and the lens 30 in the vertical direction is 0.6 ± 0.3mm, and the central line of the light source 22 deviates 0.5 ± 0.5mm towards the second direction based on the central line of the lamp 100.

The first light-controlling curved surface 311 is curved back to the first direction, the second light-controlling curved surface 315 is curved relatively to the first direction, and both the first light-controlling curved surface 311 and the second light-controlling curved surface 315 are total reflection surfaces. Therefore, the second light-controlling curved surface 315 deflects light rays in the first direction more easily than the first light-controlling curved surface 311.

The included angle between the first light control curved surface 311 and the second light emitting surface 33 is smaller than the included angle between the second light control curved surface 315 and the third light emitting surface 34, so that the light incident from the second light incident surface 312 is reflected by the first light control curved surface 311 and then emitted to the first direction polarized light on the second light emitting surface 33, and the light incident from the third light incident surface 314 is reflected by the second light control curved surface 315 and then emitted to the first direction polarized light on the third light emitting surface 34.

It should be noted that an included angle between the first light-controlling curved surface 311 and the second light-emitting surface 33 is an included angle between a tangent line at a connection position of the first light-controlling curved surface 311 and the second light-emitting surface 33, and an included angle between the second light-controlling curved surface 315 and the third light-emitting surface 34 is an included angle between a tangent line at a connection position of the second light-controlling curved surface 315 and the third light-emitting surface 34.

The first light-controlling curved surface 311 and the second light-controlling curved surface 315 are both free-form curved surfaces.

Preferably, the curvature of the first light-controlling curved surface 311 is greater than that of the second light-controlling curved surface 315, so that the first light-controlling curved surface 311 has a larger reflection angle than the second light-controlling curved surface 315, thereby facilitating the deflection of the light beam toward the first direction.

As shown in fig. 3, preferably, the cross-sectional length a of the second light incident surface 312 is smaller than the cross-sectional length b of the third light incident surface 314, so as to reduce the light incident amount of the second light incident surface 312, so that more light rays are reflected by the second light control curved surface 315, which is easier to deflect, compared with the first light control curved surface 311, and thus the light efficiency is improved.

Correspondingly, the length c of the cross section of the second light emitting surface 33 is smaller than the length d of the cross section of the third light emitting surface 34, so that the second light control curved surface 315 reflects more light.

Preferably, the lens 30 further includes a pair of extending portions 35, the pair of extending portions 35 extend toward the first direction and away from the first direction, the pair of extending portions 35 are located at two sides of the lens 30, slide slots 12 for receiving the pair of extending portions 35 are formed in the optical cavity of the housing 10, and the lens 30 can be fixed at the opening of the optical cavity of the housing 10 by the engagement of the extending portions 35 and the slide slots 12 from the side surface of the housing 10. Of course, the lens 30 includes, but is not limited to, snap-fit attachment by other attachment structures.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. A lens is characterized by comprising an inwards concave light inlet cavity (31) and an inwards concave light outlet cavity (32) which is positioned below the light inlet cavity (31), wherein the light inlet cavity (31) is internally provided with a first light inlet surface (313), the light outlet cavity (32) is internally provided with a first light outlet surface (321) opposite to the first light inlet surface (313), the first light inlet surface (313) is provided with a first microstructure (3131), the first light outlet surface (321) is provided with a second microstructure (3211), and light rays incident from the first microstructure (3131) generate primary self-mixing light through the first microstructure (3131) and emit out through the second microstructure (3211) to generate secondary self-mixing light.

2. The lens of claim 1, wherein the lens (30) is elongated and configured to deflect light emitted from a light source in a first direction, the first light incident surface (313) and the first light emitting surface (321) are curved, the first microstructure (3131) has a height gradually increasing along the first direction, the second microstructure (3211) has a height gradually decreasing along the first direction, and the second microstructure (3211) is disposed on a side of the first light emitting surface (321) close to the first direction, such that the light incident through the first light incident surface (313) can be refracted in the first direction from the first light emitting surface (321).

3. The lens according to claim 2, wherein the first microstructure (3131) comprises a plurality of mutually parallel elongated protrusions, wherein each protrusion of the first microstructure (3131) has a circular arc-shaped cross-section, wherein the second microstructure (3211) comprises a plurality of mutually parallel elongated protrusions, and wherein each protrusion of the second microstructure (3211) has a circular arc-shaped cross-section.

4. A lens according to claim 3, characterized in that the curvature of the protrusions of the first microstructure (3131) is smaller than the curvature of the protrusions of the second microstructure (3211).

5. The lens of claim 2, wherein the light incident cavity (31) further has a second light incident surface (312) and a third light incident surface (314) disposed at two sides of the first light incident surface (313), and the third light incident surface (314) and the second light incident surface (312) are distributed along the first direction; the lens further includes: a second light-emitting surface (33) and a third light-emitting surface (34) which are positioned at two sides of the light-emitting cavity (32) and are positioned on the same plane, and a first light-controlling curved surface (311) and a second light-controlling curved surface (315) which are positioned at two sides of the light-entering cavity (31), the second light-controlling curved surface (315) and the first light-controlling curved surface (311) are distributed along the first direction, the included angle between the first light control curved surface (311) and the second light emitting surface (33) is smaller than the included angle between the second light control curved surface (315) and the third light emitting surface (34), so that the light rays incident from the second light incident surface (312) are reflected by the first light control curved surface (311) and then refracted in the first direction at the second light emitting surface (33), and the light rays incident from the third light incident surface (314) are reflected by the second light control curved surface (315) and then emitted to the first direction on the third light emitting surface (34).

6. A lens according to claim 5, characterized in that the orthographic projections of the first microstructure (3131) and the second microstructure (3211) at least partially overlap on the plane of the second light exit surface (33) and the third light exit surface (34).

7. The lens of claim 5, wherein a distance between the second light incident surface (312) and the third light incident surface (314) gradually decreases from top to bottom in a vertical direction.

8. The lens of claim 7, wherein the cross-sectional length of the second entrance surface (312) is less than the cross-sectional length of the third entrance surface (314).

9. Lens according to claim 8, characterized in that the cross-sectional length of the second light exit surface (33) is smaller than the cross-sectional length of the third light exit surface (34).

10. The lens according to claim 5, wherein the light-exiting cavity (32) has a recess (322) therein that is recessed toward the light-entering cavity (31), and the recess (322) is located between the third light-exiting surface (34) and the second microstructure (3211) along the first direction.

11. The lens of claim 1, wherein the lens (30) further comprises: a pair of extension portions (35), the pair of extension portions (35) are respectively located on two sides of the lens (30), and the pair of extension portions (35) respectively extend towards a first direction and back to the first direction.

12. A light fixture, comprising: the lens (30) of any of claims 1-11.

13. The luminaire of claim 12, further comprising: the light source module (20) is used for emitting light, the light source module (20) comprises a light source (22), and the minimum distance between the light emitting surface of the light source (22) and the lens (30) in the vertical direction is 0.6 +/-0.3 mm.

14. The luminaire of claim 13, wherein: the centerline of the light source (22) is offset from the first direction by 0.5 ± 0.5mm based on the centerline of the luminaire (100).