Optical structure capable of improving lighting uniformity and vehicle lamp and vehicle using same
By introducing light collimation, light reversal, and light diffusion components into the optical structure of automotive lights, and utilizing the design of incident and outgoing pattern units, the problem of uneven light output in traditional automotive lights has been solved, achieving uniform light output with a simple structure and small footprint.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional automotive headlight optical structures result in uneven light emission, and existing solutions are complex in design and occupy a large amount of space.
It adopts an optical structure including a collimation section, a reversal section, and a diffusion section. Through the special design of the incident pattern unit and the outgoing pattern unit, the light rays are refracted alternately in the reversal section, changing the direction of the light rays to mix the bright and dark areas and achieve uniform light output.
It achieves uniform light emission, simplifies the structure and reduces space occupation, while improving the uniformity of illumination.
Smart Images
Figure CN224003592U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive lighting technology, and in particular to an optical structure that can improve the uniformity of illumination, and automotive lights and vehicles using the same. Background Technology
[0002] The light emitted from an LED light source needs to pass through a series of optical structures before exiting from the light-emitting surface to achieve a more uniform illumination effect for the headlights. In traditional headlight optical structures, such as... Figure 1 As shown, the direct-light scheme suffers from dark areas due to structural defects in the concentrator 1', resulting in uneven light emission from the light-emitting surface 2'. Current schemes, in an effort to improve illumination uniformity, generally suffer from complex designs and large space requirements. Utility Model Content
[0003] The technical problem to be solved by this utility model is: In order to overcome the above-mentioned technical problems, this utility model provides an optical structure that can improve the uniformity of illumination and a car lamp and vehicle using it. After parallel light enters from the first light-incident surface, it passes through the special angle of the first light-incident surface and, according to different refractive indices, makes the refraction angle reach the spaced patterned surface of the light-exiting surface instead of the corresponding patterned surface. This alternating change of the light direction can effectively improve the uniformity of illumination.
[0004] The technical solution adopted by this utility model to solve its technical problem is: an optical structure that can improve the uniformity of illumination, comprising a light collimating section, a light switching section, and a light diffusing section arranged sequentially. The light switching section includes an incident surface and an exit surface. The incident surface has a plurality of incident pattern units, and the exit surface has a plurality of exit pattern units. The incident pattern units and the exit pattern units are arranged side by side and repeated along the arrangement direction of the light collimating section. The width of the exit pattern unit in the arrangement direction of the light collimating section is the same as that of the incident pattern unit. The pattern units are identical or nearly identical, and the positions of the exiting pattern units correspond one-to-one with the incident pattern units along the optical path. After being collimated by the collimator, the incident light is refracted at the incident pattern unit on the incident surface of the optical reversing section, then refracted again at the exiting pattern unit on the exiting surface of the optical reversing section, and finally exits through the diffuser. The tilt angle of the incident pattern unit surface relative to the incident light, and the refractive index of the optical reversing section, ensure that the incident and exiting pattern units for the same ray are adjacent. That is, after the same ray exits from its incident pattern unit, it is refracted and does not reach the corresponding exiting pattern unit, but rather reaches the adjacent exiting pattern unit. Here, "one-to-one" refers to the vertical position shown in the attached diagram, i.e., the front-to-back position of the optical path. An incident pattern unit refers to a repeating periodic pattern on the incident surface, and an exiting pattern unit refers to a repeating periodic pattern on the exiting surface. In fact, for the incident and exit pattern units to be adjacent to each other, the tilt angle of the incident pattern unit surface relative to the optical axis, the refractive index of the light-reversing section, and the width and relative position of the incident and exit pattern units are all related to these factors. In this invention, the width of the exit pattern unit along the optical axis is the same as or approximately the same as that of the incident pattern unit, and the position of the exit pattern unit corresponds one-to-one with that of the incident pattern unit. By selecting the incident angle of the light-reversing section and the refractive index of the material of the light-reversing section, the angle of the incident surface of the light-reversing section can be obtained. This allows the incident light to reach adjacent patterns on the exit surface rather than corresponding patterns, achieving the effect of alternating the direction of incident light. The left-right relative position of the exit light and the incident light after collimation by the condenser changes, mixing the bright and dark areas illuminated by the condenser, resulting in uniform light output.
[0005] The cross-section of the incident pattern unit is two intersecting and mirror-image straight line segments, and the cross-section of the exit pattern unit is two intersecting and mirror-image straight line segments.
[0006] The cross-section of the incident pattern unit is two intersecting and mirror-image straight line segments, and the cross-section of the exit pattern unit is two intersecting and mirror-image arc segments.
[0007] The cross-section of the incident pattern unit is two intersecting and mirror-image arc segments, and the cross-section of the exit pattern unit is two intersecting and mirror-image straight line segments.
[0008] The optical collimator can also be other collimation structures; preferably, the optical collimator is a concentrator.
[0009] The light diffusion section has a light-emitting surface on the side away from the light switching section, and the light-emitting surface has a pattern.
[0010] The light-emitting surface can take various optical forms. Preferably, the pattern of the light-emitting surface of the light-diffusing part is a corn kernel pattern, a striped pattern, and / or a leather texture pattern.
[0011] Preferably, the material of the light-commutating part is PC (polycarbonate) or PMMA (polymethyl methacrylate, commonly known as plexiglass).
[0012] A vehicle headlight, including the aforementioned optical structure that improves illumination uniformity.
[0013] A vehicle including the aforementioned headlights.
[0014] The beneficial effects of this utility model are that the optical structure of this utility model, which can improve the uniformity of illumination, and the car lights and vehicles using it, change the original light distribution and stagger the light output, so that the original bright and dark areas are mixed. The design structure is simple and occupies little space, and it also achieves the effect of improving the uniformity of light. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a schematic diagram of the traditional LED automotive light optical structure.
[0017] Figure 2 This is an exploded structural diagram of Embodiment 1 of this utility model.
[0018] Figure 3 This is a schematic diagram of the optical path of Embodiment 1 of this utility model.
[0019] Figure 4 This is an exploded structural diagram of Embodiment 2 of this utility model.
[0020] Figure 5 This is a schematic diagram of the optical path of Embodiment 2 of this utility model.
[0021] Figure 6 This is an exploded structural diagram of Embodiment 3 of this utility model.
[0022] Figure 7 This is a schematic diagram of the optical path of Embodiment 3 of this utility model.
[0023] In the figure, 1' is the condenser, 2' is the light-emitting surface, 1 is the light collimation part, 2 is the light reversal part, 2a is the incident surface, 2a-1 is the incident pattern unit, 2b is the exit surface, 2b-1 is the exit pattern unit, 3 is the light diffusion part, and 3a is the light-emitting surface. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0025] This invention discloses an optical structure that improves illumination uniformity, comprising a collimating section 1, a transducing section 2, and a diffusing section 3 arranged sequentially. The transducing section 2 includes an incident surface 2a and an exit surface 2b. The incident surface 2a has a plurality of incident pattern units 2a-1, and the exit surface 2b has a plurality of exit pattern units 2b-1. Both the incident pattern units 2a-1 and the exit pattern units 2b-1 are arranged side-by-side and repeated along the arrangement direction of the collimating section 1. The width of the exit pattern units 2b-1 in the arrangement direction of the collimating section 1 is the same as or approximately the same as that of the incident pattern units 2a-1, and the width of the exit pattern units 2b-1 is the same as or approximately the same as that of the incident pattern units 2a-1. The positions of the incident pattern unit 2b-1 and the incident pattern unit 2a-1 are one-to-one along the optical path. After the incident light is collimated by the collimator 1, it is refracted at the incident pattern unit 2a-1 on the incident surface 2a of the light-reversing section 2, and then refracted at the exit pattern unit 2b on the exit surface 2b of the light-reversing section 2 before exiting through the light-diffusing section 3. The tilt angle of the surface of the incident pattern unit 2a-1 relative to the incident light, as well as the refractive index of the light-reversing section 2, make the incident pattern unit 2a-1 and the exit pattern unit 2b-1 adjacent to each other when the same light ray passes through them. That is, after the same light ray exits from the incident pattern unit 2a-1, it is refracted and does not reach the exit pattern unit 2b-1 that corresponds to it above or below, but instead reaches the adjacent exit pattern unit 2b-1. The front and back positions here refer to the vertical positions shown in the attached diagram, that is, the front and back positions of the optical path. Incident pattern unit 2a-1 refers to a repeating periodic pattern surface on the incident surface 2a, and exit pattern unit 2b-1 refers to a repeating periodic pattern surface on the exit surface 2b. In fact, for the incident pattern unit 2a-1 and exit pattern unit 2b-1 to be adjacent to each other for the same ray of light, it depends on the tilt angle of the incident pattern unit 2a-1 surface relative to the optical axis, the refractive index of the light-commutating part 2, and the width and relative positional relationship of the incident pattern unit 2a-1 and exit pattern unit 2b-1. The width of the outgoing pattern unit 2b-1 in the optical axis direction is the same as or approximately the same as that of the incoming pattern unit 2a-1, and the position of the outgoing pattern unit 2b-1 corresponds one-to-one with that of the incoming pattern unit 2a-1. By selecting the incident angle of the light-reversing part 2 and the refractive index of the material of the light-reversing part 2, the angle of the incident surface 2a of the light-reversing part 2 can be obtained, so that the incident light reaches the adjacent pattern of the outgoing surface 2b instead of the corresponding pattern surface, thereby achieving the effect of alternating the incident light direction. The left-right relative position of the outgoing light and the incident light after collimation by the condenser changes, mixing the bright and dark areas illuminated by the condenser, so that the light output is uniform.
[0026] The optical collimating part 1 can also be other collimating structures. Preferably, the optical collimating part 1 is a concentrator.
[0027] The light diffuser 3 has a light-emitting surface 3a on the side away from the light switching section 2, and the light-emitting surface 3a has a pattern. The light-emitting surface 3a can be of various optical forms. Preferably, the pattern of the light-emitting surface 3a of the light diffuser 3 is a corn kernel pattern, a striped pattern, and / or a leather texture pattern.
[0028] The material of the light commutation section 2 can be PC or PMMA. Based on the selected material of the light commutation section 2, the refractive index of the light commutation section 2 can be determined. Then, based on the angle of the incident surface 2a of the light commutation section 2, the incident light reaches the adjacent pattern of the exit surface 2b, mixing the bright and dark areas illuminated by the concentrator, so that the light output is uniform.
[0029] The optical structure of this invention, which improves the uniformity of illumination, can be used in vehicle lights, which are suitable for vehicles.
[0030] The following are specific examples of the structure of the incident surface 2a and the exit surface 2b of the light commutation section 2:
[0031] Example 1
[0032] like Figure 2-3 As shown, the cross section of the incident pattern element 2a-1 consists of two intersecting and mirror-image straight line segments, and the cross section of the outgoing pattern element 2b-1 consists of two intersecting and mirror-image straight line segments.
[0033] Example 2
[0034] like Figure 4-5 As shown, the cross-section of the incident pattern element 2a-1 consists of two intersecting and mirror-image straight line segments, while the cross-section of the outgoing pattern element 2b-1 consists of two intersecting and mirror-image arc segments.
[0035] Example 3
[0036] like Figure 6-7 As shown, the cross-section of the incident pattern element 2a-1 consists of two intersecting and mirror-image arc segments, while the cross-section of the exit pattern element 2b-1 consists of two intersecting and mirror-image straight line segments.
[0037] This invention relates to an optical structure that improves the uniformity of illumination, as well as vehicle lights and vehicles using the same structure. By altering the original light distribution and interleaving the light output, it blends the original bright and dark areas. The design is simple, occupies little space, and achieves the same effect of improving light uniformity. Any light output angle is possible, and this optical structure can be matched to any light output angle, without being limited by angle.
[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. An optical structure capable of improving uniformity of lighting, comprising a light collimating section, a light reversing section and a light diffusing section arranged in sequence, characterized in that: The light reversing part comprises an incident surface and an exit surface, the incident surface has a plurality of incident pattern units, the exit surface has a plurality of exit pattern units, the incident pattern units and the exit pattern units are arranged side by side repeatedly along the arrangement direction of the light collimating part, the width of the exit pattern units in the arrangement direction of the light collimating part is the same as or approximately the same as that of the incident pattern units, the positions of the exit pattern units and the incident pattern units correspond to each other along the light path, the incident light is refracted by the incident pattern units of the incident surface of the light reversing part after collimation by the light collimating part, is refracted by the exit pattern units of the exit surface of the light reversing part, and is finally emitted through the light diffusing part, and the inclination angle of the surface of the incident pattern units relative to the incident light and the refractive index of the light reversing part make the incident pattern units and the exit pattern units through by the same light ray be adjacent in position.
2. The optical structure of claim 1, wherein: The cross section of the incident pattern unit is two intersecting and mirror image straight line segments, and the cross section of the exit pattern unit is two intersecting and mirror image straight line segments.
3. The optical structure for improving illumination uniformity as described in claim 1, characterized in that: The cross section of the incident pattern unit is two intersecting and mirror image straight line segments, and the cross section of the exit pattern unit is two intersecting and mirror image arc line segments.
4. The optical structure for improving illumination uniformity as described in claim 1, characterized in that: The cross section of the incident pattern unit is two intersecting and mirror image arc line segments, and the cross section of the exit pattern unit is two intersecting and mirror image straight line segments.
5. The optical construction of claim 1, wherein: The light collimating part is a light collector.
6. The optical construction of claim 1, wherein: The light diffusing part has an exit surface on the side away from the light reversing part, and the exit surface has a pattern.
7. The optical structure of claim 6, wherein: the first and second light sources are arranged to emit light in a first direction; and the first and second light sources are arranged to emit light in a second direction that is substantially orthogonal to the first direction. The pattern of the exit surface of the light diffusing part is a corn kernel pattern, a stripe pattern and / or a skin pattern.
8. The optical construction of claim 1, wherein: The material of the light reversing part is PC or PMMA.
9. A vehicle lamp characterized by The optical structure capable of improving lighting uniformity comprises the optical structure according to any one of claims 1-8.
10. A vehicle characterized by comprising: The vehicle lamp comprises the vehicle lamp according to claim 9.