Reflection unit, system and vehicle lamp for improving lighting uniformity

Abstract

The utility model discloses a kind of reflection unit, system and car light of improving lighting uniformity, the reflection unit of this improvement lighting uniformity includes: collimating assembly, first reflecting surface, second reflecting surface and third reflecting surface;Light source is located at the focal point of collimating assembly;The first reflecting surface is located in the light-emitting direction of collimating assembly, and the first reflecting surface is used to reflect part of light emitted by collimating assembly to unit light-emitting direction;The second reflecting surface is located in the light-emitting direction of collimating assembly, and the second reflecting surface is used to reflect another part of light emitted by collimating assembly, along the arrangement direction of first reflecting surface and second reflecting surface, to away from first reflecting surface;The third reflecting surface is located in the light-emitting direction of second reflecting surface, and the third reflecting surface is used to reflect light emitted by second reflecting surface to unit light-emitting direction, the utility model has lighting uniformity, and the advantage of reducing the arrangement density of condenser.

Description

Technical Field

[0001] This utility model belongs to the field of automotive lighting technology, specifically relating to automotive lighting reflector structures, and more particularly to a reflector unit, system, and automotive lighting that improves illumination uniformity. Background Technology

[0002] In the field of automotive lighting, using concentrators to improve the uniformity of light distribution is a common and widely used technique. However, because the light intensity near the optical axis is much higher than that at the edges, even after refraction by the concentrator, the emitted light still exhibits a problem of being brighter in the center and darker at the edges. To improve this situation, when assembling multiple concentrators, the distance between the components is usually shortened, relying on the superposition of light from the edge regions of adjacent concentrators to achieve overall uniform light distribution. However, this approach increases the number of concentrators and light sources used, leading to significant drawbacks in product size, overall weight, and assembly processes. To address these issues, a reflective unit, system, and automotive lighting system designed to improve illumination uniformity are proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a reflective unit, system and vehicle lamp that improves the uniformity of illumination. The reflective unit that improves the uniformity of illumination has the advantages of uniform illumination and reduced density of the concentrator.

[0005] The reflective unit for improving illumination uniformity according to an embodiment of the present invention includes: a collimation component, a first reflective surface, a second reflective surface, and a third reflective surface; a light source is disposed at the focal point of the collimation component, the collimation component being used to collimate the light emitted by the light source; the first reflective surface is located in the light emission direction of the collimation component, the first reflective surface being used to reflect a portion of the light emitted by the collimation component to the unit's light emission direction; the second reflective surface is disposed in the light emission direction of the collimation component, the second reflective surface being used to reflect another portion of the light emitted by the collimation component away from the first reflective surface along the arrangement direction of the first and second reflective surfaces; the third reflective surface is disposed in the light emission direction of the second reflective surface, the third reflective surface being used to reflect the light emitted by the second reflective surface to the unit's light emission direction.

[0006] According to one embodiment of the present invention, the first reflective surface, the second reflective surface, and the third reflective surface are all total reflective surfaces.

[0007] According to one embodiment of the present invention, a first diffusion pattern is provided on the first reflective surface and the third reflective surface.

[0008] According to one embodiment of the present invention, a second diffusion pattern is provided on the second reflective surface.

[0009] According to one embodiment of the present invention, the collimation component, the first reflecting surface, the second reflecting surface, and the third reflecting surface are integrally formed.

[0010] A reflective system for improving illumination uniformity includes any of the reflective units described above, wherein the number of reflective units is plurality of.

[0011] According to one embodiment of the present invention, a plurality of the reflecting units are arranged along the width direction of the reflecting system.

[0012] According to one embodiment of the present invention, the plurality of reflective units are divided into two groups, each group of reflective units is arranged along the width direction of the reflective system, the two groups of reflective units are arranged along the unit light emission direction, and the two collimating components that are adjacent to each other are staggered.

[0013] A vehicle headlight includes a reflective unit for improving illumination uniformity as described above.

[0014] The beneficial effects of this utility model are that it uses a first reflective surface and a second reflective surface to divide the collimated light from the collimating component into two equal parts, and uses the second reflective surface to separate the two parts of the light, thereby increasing the illumination width; at the same time, it reduces the light intensity in the central area, thereby reducing the difference between the strong and weak light distribution formed by the reflective unit and achieving uniform illumination.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which: Figure 1 This is a three-dimensional schematic diagram of the reflective unit structure of this utility model; Figure 2 This is a schematic diagram of the light path of the reflective unit of this utility model; Figure 3 This is a schematic diagram of the front view of the reflective unit of this utility model; Figure 4 This is a top view schematic diagram of the reflective unit of this utility model; Figure 5 This is a side view schematic diagram of the reflective unit of this utility model; Figure 6This is a schematic diagram showing the staggered arrangement of the two front and rear reflective units of this utility model; Figure label: 1. Collimation component; 11. First reflecting surface; 12. Second reflecting surface; 13. Third reflecting surface. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following describes in detail, with reference to the accompanying drawings, a reflective unit, a system, and a vehicle lamp that improves illumination uniformity according to embodiments of the present invention.

[0022] like Figures 1-6As shown, the reflective unit for improving illumination uniformity according to an embodiment of the present invention includes: a collimation component 1, a first reflective surface 11, a second reflective surface 12, and a third reflective surface 13; a light source is disposed at the focal point of the collimation component 1, and the collimation component 1 is used to collimate the light emitted by the light source; the first reflective surface 11 is located in the light-emitting direction of the collimation component 1, and the first reflective surface 11 is used to reflect part of the light emitted by the collimation component 1 to the unit's light-emitting direction; the second reflective surface 12 is disposed in the light-emitting direction of the collimation component 1, and the second reflective surface 12 is used to reflect another part of the light emitted by the collimation component 1 away from the first reflective surface 11 along the arrangement direction of the first reflective surface 11 and the second reflective surface 12; the third reflective surface 13 is disposed in the light-emitting direction of the second reflective surface 12, and the third reflective surface 13 is used to reflect the light emitted by the second reflective surface 12 to the unit's light-emitting direction.

[0023] In this embodiment, the collimation component 1 is a concentrator. The first reflective surface 11 and the second reflective surface 12 are arranged along the width direction required for illumination. The projected area of ​​the first reflective surface 11 in the Y direction should be half the area of ​​the circumscribed rectangle tangent to the ellipse on the bottom surface of the concentrator, and this projected surface is also a rectangle. Similarly, the projected area of ​​the second reflective surface 12 in the Y direction should be half the area of ​​the circumscribed rectangle tangent to the ellipse on the bottom surface of the concentrator, and this projected surface is also a rectangle. The first reflective surface 11, the second reflective surface 12, and the third reflective surface 13 are all total reflection surfaces.

[0024] After the light emitted by the light source is collimated by the collimating component 1, half of it illuminates the first reflecting surface 11, which then completely reflects this portion of the light back to the light-emitting direction of the unit. The other half is reflected by the second reflecting surface 12 to the third reflecting surface 13, which then reflects the light back to the light-emitting direction of the unit. In other words, the collimated light from the collimating component 1 is evenly divided into two parts by the first reflecting surface 11 and the second reflecting surface 12, and the second reflecting surface 12 separates the two parts of the light. This creates a certain distance between the light distribution formed by the reflection from the first reflecting surface 11 and the light distribution formed by the reflection from the third reflecting surface 13. This increases the illumination width while reducing the light intensity in the central area, thus reducing the difference in intensity between the strong and weak light distributions formed by the reflecting unit and achieving uniform illumination.

[0025] The first reflecting surface 11, the second reflecting surface 12, and the third reflecting surface 13 are all total reflection surfaces.

[0026] The projection of the third reflecting surface 13 in the Z direction should have the same size and area as the projection of the second reflecting surface 12 in the Z direction. The angle between the first reflecting surface 11 in the Y direction and the XZ plane is 40-50°, the angle between the second reflecting surface 12 in the Y direction and the XZ plane is 40-50°, and the angle between the third reflecting surface 13 in the X direction and the YZ plane is 40-50°.

[0027] The first reflective surface 11 and the third reflective surface 13 are provided with a first diffusion pattern.

[0028] In this embodiment, by setting a first diffusion pattern, at least some light diffuses between the two light distributions, increasing the brightness between the two light distributions and further improving the uniformity of illumination.

[0029] The second reflective surface 12 is provided with a second diffusion pattern. By providing the second diffusion pattern on the second reflective surface 12, the light incident on the third reflective surface 13 is changed at a certain angle. When reflected by the third reflective surface 13, the angle is increased, making the lighting effect more uniform.

[0030] The collimation component 1, the first reflective surface 11, the second reflective surface 12, and the third reflective surface 13 are integrally formed.

[0031] In this embodiment, the collimation component 1, the first reflective surface 11, the second reflective surface 12, and the third reflective surface 13 can be formed into an integral thick-walled part by injection molding, reducing assembly steps.

[0032] A reflective system for improving illumination uniformity includes any reflective unit for improving illumination uniformity, wherein the number of reflective units is multiple.

[0033] Multiple reflective units are arranged along the width of the reflective system.

[0034] Multiple reflective units are divided into two groups. Each group of reflective units is arranged along the width of the reflective system. The two groups of reflective units are arranged along the light emission direction of the units, and the two collimating components 1 that are adjacent to each other are staggered.

[0035] That is, when two adjacent reflective units are projected along the X direction, the third reflective surface 13 of the rear reflective unit, the third reflective surface 13 of the front reflective unit, the first reflective surface 11 of the rear reflective unit, and the first reflective surface 11 of the front reflective unit are arranged sequentially along the Z direction; alternatively, when projected along the X direction, the third reflective surface 13 of the rear reflective unit, the first reflective surface 11 of the front reflective unit, the first reflective surface 11 of the rear reflective unit, and the third reflective surface 13 of the front reflective unit are arranged sequentially along the Z direction.

[0036] By staggering the two reflective units, the gap between the two illuminated areas of the same reflective unit is filled by the illuminated unit in front, further improving the uniformity of illumination.

[0037] A vehicle headlight, including any reflective unit that improves illumination uniformity.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A reflective unit for improving illumination uniformity, characterized in that, include: Collimation component (1), with the light source located at the focal point of the collimation component (1), the collimation component (1) is used to collimate the light emitted by the light source; The first reflective surface (11) is located in the light emission direction of the collimation component (1), and the first reflective surface (11) is used to reflect part of the light emitted by the collimation component (1) to the unit light emission direction; The second reflective surface (12) is disposed in the light-emitting direction of the collimating component (1). The second reflective surface (12) is used to reflect another part of the light emitted by the collimating component (1) away from the first reflective surface (11) along the arrangement direction of the first reflective surface (11) and the second reflective surface (12). The third reflective surface (13) is located in the light-emitting direction of the second reflective surface (12), and the third reflective surface (13) is used to reflect the light emitted by the second reflective surface (12) to the unit light-emitting direction.

2. The reflective unit for improving illumination uniformity according to claim 1, characterized in that, The first reflective surface (11), the second reflective surface (12) and the third reflective surface (13) are all total reflective surfaces.

3. The reflective unit for improving illumination uniformity according to claim 2, characterized in that, The first reflective surface (11) and the third reflective surface (13) are provided with a first diffusion pattern.

4. The reflective unit for improving illumination uniformity according to claim 1, characterized in that, The second reflective surface (12) is provided with a second diffusion pattern.

5. The reflective unit for improving illumination uniformity according to claim 4, characterized in that, The collimation component (1), the first reflective surface (11), the second reflective surface (12) and the third reflective surface (13) are integrally formed.

6. A reflection system for improving illumination uniformity, comprising the reflection unit for improving illumination uniformity as described in any one of claims 1-5, characterized in that, The number of the reflective units is multiple.

7. The reflection system for improving illumination uniformity according to claim 6, characterized in that, The plurality of the reflective units are arranged along the width direction of the reflective system.

8. The reflection system for improving illumination uniformity according to claim 7, characterized in that, The multiple reflective units are divided into two groups. Each group of reflective units is arranged along the width direction of the reflective system. The two groups of reflective units are arranged along the unit light emission direction, and the two collimating components (1) that are adjacent to each other are staggered.

9. A vehicle light, characterized in that, Includes the reflective unit for improving illumination uniformity as described in any one of claims 1-5.

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