CN217684771U - Lens and lamp - Google Patents

Abstract

The utility model provides a lens and lamps and lanterns, lens include the income light chamber of indent and are located go into the light chamber below and the play light chamber of indent, go into the light intracavity and have first income light face, the play light intracavity have with first income light face is relative first goes out the plain noodles, first income light is gone into and is had first microstructure on the plain noodles, second microstructure has on the first play plain noodles, from the light warp of first microstructure incidence first microstructure produces once from mixing light and warp the second microstructure jets out and produces the secondary from mixing light. Compared with the prior art, the utility model discloses simple structure and light-emitting light are even, do not have yellow spot.

Description

Lens and lamp

Technical Field

The utility model relates to the field of lighting technology, especially, relate to a lens and lamps and lanterns.

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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lens and lamps and lanterns to improve the light-emitting effect, improve user experience.

In order to achieve the above object, the technical scheme of the utility model provides a lens, including the income light chamber of indent and being located go into the light chamber below and the play light chamber of indent, it has first income light face to go into in the light chamber, the play light intracavity have with the first play plain noodles that go into the plain noodles is relative, first microstructure has on the first income light face, the second microstructure has on the first play plain noodles, from the light warp of first microstructure incident first microstructure produces once from mixing light and warp the second microstructure jets out and produces the secondary from mixing light.

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 light control curved surface, a first light control curved surface, a second light control curved surface, a third light emitting 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 arranged on two sides of the light entering cavity, the second 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, light rays incident from the second light entering surface are refracted out in the first direction on the second light emitting surface after being reflected by the first light control curved surface, and light rays incident from the third light entering surface are emitted out in the first direction to 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 along a 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 that is concave towards the light entrance cavity is arranged in the light exit cavity, and the concave portion is located between the third light exit 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 utility model also provides a lamp, include as above 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 ± 0.3mm.

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 utility model discloses technical scheme has following beneficial effect:

the technical scheme of the utility model the lens that provides, through first microstructure and second microstructure, certainly the light of first microstructure incident can produce twice from the mixed light, consequently, and light-emitting light is even to, the yellow spot has effectively been solved and the problem of debugging particle material concentration.

Drawings

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

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

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

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

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

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

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

Reference numerals are as follows:

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 clearer, 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 details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant 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 organic glass 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 can be abutted by increasing the contact area with the substrate 21 to enhance the heat dissipation efficiency, and can be specifically set as required without any limitation. 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: a first light-controlling curved surface 311 and a second light-controlling curved surface 315 located at two sides of the light-entering cavity 31, wherein 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 range of the orthographic projection 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.

Wherein, the light 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 for mixing light, and the first light emitting surface 321 has a second microstructure 3211 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, because the height of the first microstructure 3131 increases gradually along the first direction, the height of the second microstructure 3211 decreases gradually along the first direction, therefore, through the first microstructure 3131 with the second microstructure 3211 not only can realize the secondary self-mixing light, and, more be favorable to making via the light that first income plain noodles 313 incides is from first play plain noodles 321 is partial to the efflux of first direction, reaches the bias light effect better, further reduces the parasitic light that is not effectively polarized light, compares in the upper commodity that present full celestial star framework can only illuminate the goods shelves, the utility model discloses further increased the illuminance to lower floor goods shelves and made illuminance more even, reinforcing user experience feels.

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 curvature 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 plane 3221 is a total reflection plane, and incident light is totally reflected on the inclined plane 3221, so that most of light is emitted from the second microstructure 3211, thereby improving the 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 installation is convenient, and the tolerance for installation error 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 centerline of the light source 22 deviates to the second direction by 0.5 ± 0.5mm based on the centerline 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 can more easily deflect the light rays toward the first direction 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.

Accordingly, the sectional length c of the second light emitting surface 33 is smaller than the sectional length d 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 securement via other securement structures.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims (14)

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 according to claim 1, wherein the lens (30) is elongated and configured to emit light from a light source in a direction deviating from a first direction, the first light incident surface (313) and the first light emitting surface (321) are curved, a height of the first microstructure (3131) increases gradually along the first direction, a height of the second microstructure (3211) decreases gradually 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, so that light incident through the first light incident surface (313) can be refracted from the first light emitting surface (321) in a direction deviating from the first direction.

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

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: the light source comprises a light emitting cavity (32), a second light emitting surface (33), a third light emitting surface (34), a first light control curved surface (311) and a second light control curved surface (315), wherein the second light control curved surface (33) and the third light emitting surface (34) are located on the same plane and located on the two sides of the light emitting cavity (32), the second light control curved surface (315) and the first light control 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 light incident from the second light incident surface (312) is refracted out in the first direction from the second light emitting surface (33) after being reflected by the first light control curved surface (311), and light incident from the third light incident surface (314) is refracted in the first direction from the third light emitting surface (34) after being deflected by the second light control curved surface (315).

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 exit cavity (32) has a recess (322) therein that is recessed toward the light entry cavity (31), the recess (322) being located between the third light exit 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).

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