Optical structure for optimizing lamp black area
By introducing optical patterns and light-blocking ribs into the luminaire, the problem of black areas when viewed from a large angle is solved, resulting in increased light intensity and reduced cost, while also improving the consistency and aesthetics of the luminaire.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU ANRUI OPTOELECTRONICS CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-15
AI Technical Summary
When viewed from a large angle, there is a black area at the seam between the fixed-side position light and the movable-side position light, resulting in poor continuity of the lighting fixtures. Existing technologies cannot effectively improve light intensity and reduce costs.
The optical structure of the dark area is optimized, including a decorative frame and a frosted inner layer. It features optical patterns, light-blocking ribs, and snap-fit structures. Through light path control and material optimization, the light intensity is improved and the light leakage rate is reduced.
When viewed from a large angle, the light intensity is increased by about 35%, eliminating dark spots, reducing light leakage, improving the aesthetics and yield of the lamp, and reducing the overall cost of the lamp.
Smart Images
Figure CN224245991U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of automotive lighting parts. Specifically, this utility model relates to an optical structure for optimizing the dark area of a lamp. Background Technology
[0002] When designing headlights, automakers typically aim for a seamless and uniform appearance between the fixed and movable side position lights from any angle. However, due to styling and door clearance issues, a dark area often appears at the junction of the fixed and movable side position lights when viewed from a large side angle. This area lacks light, resulting in poor light continuity. Solutions to this dark area issue when viewing the fixed and movable side position lights from a large side angle are usually implemented.
[0003] Chinese Patent (Publication No.: 114919493A) discloses a rear position light illumination device for automobiles that satisfies lateral continuity and its application. The structure of the rear position light illumination device mainly includes a left fixed-side position light area, a right fixed-side position light area, a movable-side position light area, other functional areas on the left fixed side, and other functional areas on the right fixed side. However, the light intensity is weak at the seam between the fixed-side and movable-side position lights, resulting in poor light continuity. Utility Model Content
[0004] This utility model is designed to solve the above-mentioned problems. Its purpose is to provide an optical structure that optimizes the dark area of a lamp, thereby increasing the light intensity at the slit between the fixed-side lamp and the movable-side lamp and reducing costs. To achieve the above objective, the technical solution adopted by this utility model is as follows: an optical structure for optimizing the dark area of a lamp, comprising a decorative frame and a frosting inner component, including a light source board support, wherein the decorative frame and the frosting inner component are connected to the light source board support, and the decorative frame is provided with a dark area optimization structure.
[0005] The black area optimization structure includes optical patterns, the decorative frame is a two-color injection molded structure, the optical patterns are set on the front of the decorative frame, and the back of the decorative frame is set with a leather texture.
[0006] The mist emitter has a first light-blocking rib at one end, which abuts against the decorative frame.
[0007] The light source board support is provided with a second light-blocking rib, which abuts against the fogging inner part.
[0008] The decorative frame is provided with a first buckle, which is engaged with the light source board bracket.
[0009] The first buckle includes a first flat plate, one end of which is connected to a first bent plate.
[0010] The mist generator is equipped with a second buckle, which is connected to the light source board bracket.
[0011] The second buckle includes a second flat plate, one end of which is connected to a second bent plate.
[0012] The back of the decorative frame and the inner surface of the frosted surface are provided with a light diffusion film layer.
[0013] The first and second light-blocking ribs are right-angled structures.
[0014] The technical effects of this invention are as follows: The optical pattern on the front of the decorative frame directionally scatters incident light to the seam area between the fixed-side and movable-side position lights. The optical pattern causes total internal reflection when viewed from a large angle, compensating for light attenuation caused by seam obstruction in traditional structures. Through light path control, the light intensity at the seam is increased, eliminating localized dark spots in areas without patterns. The textured surface in the black area suppresses stray light reflection through surface micro-scattering, preventing multiple reflections of light within the decorative frame that create halos. The textured surface effectively blocks light leakage, improving the contrast between the fixed-side and movable-side position lights. The second light-blocking rib is located at the seam between the fixed-side and movable-side position lights, ensuring no gap between the frosted inner material and the light source board support at the seam, blocking direct light from overflowing at the seam; this results in a gapless dark area when viewed from a large angle, reducing light leakage from gaps, making the surface boundary clearer, lowering the light leakage rate at the seam, and reducing the dark area area. The dual-color injection molding structure eliminates the need for secondary processing such as hot stamping or screen printing, improving yield and reducing the overall cost of the lamp. Meanwhile, the structural assembly and disassembly scheme is simple, requiring fewer parts and further reducing costs. Furthermore, the structural mold design is simple, with high machining precision and very convenient dimensional modifications. Attached Figure Description
[0015] This manual includes the following figures, which illustrate the following:
[0016] Figure 1 This is a cross-sectional view of an optical structure for optimizing the dark area of a lamp according to this utility model;
[0017] Figure 2 This is an exploded view of an optimized optical structure for the dark area of a lamp, which is presented in this utility model.
[0018] Figure 3 This is an assembly drawing of an optical structure for optimizing the dark area of a lamp;
[0019] Figure 4 This is a schematic diagram of the first snap-fit structure of an optical structure for optimizing the dark area of a lamp;
[0020] Figure 5 This is a schematic diagram of the second snap-fit structure of an optical structure for optimizing the dark area of a lamp.
[0021] The markings in the diagram are as follows: 1. Decorative frame; 2. Fogging inner panel; 201. First light-blocking rib; 3. Light source board bracket; 301. Second light-blocking rib; 4. Black area optimization structure; 401. Optical pattern; 402. Leather texture; 5. First buckle; 501. First flat plate; 502. First bending plate; 6. Second buckle; 601. Second flat plate; 602. Second bending plate. Detailed Implementation
[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.
[0023] like Figures 1-5 As shown, an optical structure for optimizing the dark area of a lamp includes a decorative frame 1 and a frosting inner component 2, and a light source board support 3. The decorative frame 1 and the frosting inner component 2 are connected to the light source board support 3. The decorative frame 1 is provided with a dark area optimization structure 4. The decorative frame 1 provides a mounting base for other components. Its connection to the light source board support 3 ensures the stability of the entire optical structure, allowing each component to maintain a relatively fixed position during lamp operation and preventing performance issues caused by component loosening. The frosting inner component 2 primarily functions to diffuse light. Its surface frosting treatment allows light to undergo diffuse reflection during propagation. When light emitted from the light source shines on the frosting inner component 2, it is no longer a concentrated, highly directional beam, but rather scattered in all directions, thereby expanding the illumination range. The main function of the light source board support 3 is to stably support the light source board. It provides a reliable mounting platform for the light source board, ensuring that the light source board is in a suitable position inside the lamp for normal operation. In the design of the lighting fixtures, which include fixed-side position lights and movable-side position lights, there is a black area at the seam between the fixed-side and movable-side position lights. This area is devoid of light, resulting in poor continuity of the position lights. The black area optimization structure 4 allows light to reflect off the black area, making the black area appear lighter when viewed from a large angle, thus ensuring a certain degree of continuity of the position lights.
[0024] The optimized black area structure 4 includes an optical pattern 401. The decorative frame 1 is a two-color injection molded structure. The optical pattern 401 is located on the front of the decorative frame 1, and a leather texture 402 is located on the back of the decorative frame 1. The optical pattern on the front of the decorative frame 1 directionally scatters incident light to the seam area between the fixed-side and movable-side position lights. The optical pattern causes total internal reflection of light when viewed from a large angle, compensating for the light attenuation caused by the seam obstruction in traditional structures. Through light path control, the light intensity at the seam is increased by about 35%, eliminating local dark spots in the traditional unpatterned areas. The leather textured surface (Ra=0.8-1.2μm) in the black area suppresses stray light reflection through surface micro-scattering, preventing multiple reflections of light inside the decorative frame 1 that form halos. The light transmittance of the leather textured surface is ≤5%, effectively blocking light leakage and improving the contrast at the boundary between the fixed-side and movable-side position lights. The two-color injection molding structure eliminates the need for secondary processing such as hot stamping or screen printing, improving the yield rate and reducing the overall cost of the lamp. At the same time, the structural disassembly and assembly scheme is simple, with fewer disassembled parts, further reducing costs. Meanwhile, the structural mold design is simple, the processing precision is high, and the size modification is very convenient.
[0025] The inner diffuser 2 has a first light-blocking rib 201 at one end, which abuts against the decorative frame 1. The first light-blocking rib 201 is located at the seam between the fixed-side position light and the movable-side position light, and there is no gap between the inner diffuser 2 and the decorative frame 1 at the seam. The first light-blocking rib 201 eliminates the gap between the inner diffuser 2 and the decorative frame 1 at the seam, thus eliminating the assembly gap on the front surface of the decorative frame 1 and improving the aesthetics of the lamp.
[0026] A second light-blocking rib 301 is provided on the light source plate bracket 3, and the second light-blocking rib 301 abuts against the inner fogging device 2. The second light-blocking rib 301 is located at the seam between the inner fogging device 2 and the light source plate bracket 3, so that there is no gap between the inner fogging device 2 and the light source plate bracket 3 at the seam, blocking the direct light from overflowing at the seam; thus, it allows for gapless dark areas to be observed at large angles, reduces light leakage from gaps, makes the surface boundary clear, reduces the light leakage rate at the seam, and shrinks the dark area.
[0027] By optimizing the optical pattern 401, the leather texture 402, the first light-blocking rib 201, and the second light-blocking rib 301, the problem of the dark area when viewed from a large angle was solved.
[0028] The decorative frame 1 is provided with a first buckle 5, which engages with the light source board bracket 3. The light source board bracket 3 has a snap-fit groove, and the first buckle 5 engages with the light source board bracket 3 to connect the decorative frame 1 and the light source board bracket 3. The first buckle 5 replaces the traditional screw, eliminating the assembly gap caused by uneven bolt preload, and at the same time, the interference fit achieves zero gap at the joint between the decorative frame 1 and the light source board bracket 3.
[0029] The first buckle 5 includes a first flat plate 501, one end of which is connected to a first bent plate 502. The first buckle 5 is composed of the first flat plate 501 and the first bent plate 502. The first flat plate 501 is used to connect the decorative frame 1 and the first bent plate 502. The first bent plate 502 is snapped into the snap-fit groove by elastic deformation to achieve self-locking.
[0030] The inner part of the fogging device 2 is equipped with a second clip 6, which is connected to the light source board bracket 3. The second clip 6 engages with the light source board bracket 3, thus connecting the inner part of the fogging device 2 to the light source board bracket 3. The second clip 6 replaces the traditional screw, eliminating the assembly gap caused by uneven bolt preload, and at the same time, the interference fit achieves zero gap at the joint between the inner part of the fogging device 2 and the light source board bracket 3.
[0031] The second buckle 6 includes a second flat plate 601, one end of which is connected to a second bent plate 602. The second buckle 6 is composed of the second flat plate 601 and the second bent plate 602. The second flat plate 601 is used to connect the misting inner part 2 and the second bent plate 602. The second bent plate 602 is snapped into the snap-fit groove by elastic deformation to achieve self-locking.
[0032] A light-diffusing film layer is provided on the back of the decorative frame 1 and the surface of the frosted inner component 2. The light-diffusing film on the back of the decorative frame 1 and the surface of the frosted inner component 2 diffuses concentrated light evenly to the seam area through microparticle scattering, while suppressing hot spot phenomenon.
[0033] The first light-blocking rib 201 and the second light-blocking rib 301 are right-angled structures. The right-angled structure can save materials for the first light-blocking rib 201 and the second light-blocking rib 301, thus reducing costs.
[0034] The role and effect of the embodiments
[0035] The optical pattern on the front of the decorative frame 1 directionally scatters incident light to the seam area between the fixed-side and movable-side position lights. This optical pattern causes total internal reflection when viewed from a large angle, compensating for light attenuation caused by seam obstruction in traditional structures. Through light path control, the light intensity at the seam is increased by approximately 35%, eliminating localized dark spots in areas without patterns. The textured surface (Ra=0.8-1.2μm) in the black area suppresses stray light reflection through surface micro-scattering, preventing multiple reflections of light within the decorative frame 1 that could form halos. With a light transmittance of ≤5%, the textured surface effectively blocks light leakage, improving the contrast between the fixed-side and movable-side position lights. The second light-blocking rib 301 is located at the seam between the fixed-side and movable-side position lights, ensuring no gap between the frosting inner element 2 and the light source board support 3 at the seam, blocking direct light from overflowing at the seam. This allows for seamless dark areas when viewed from a large angle, reducing light leakage from gaps, resulting in clearer surface boundaries, lower light leakage at the seam, and a smaller dark area. The dual-color injection molding structure eliminates the need for secondary processing such as hot stamping or screen printing, improving yield and reducing overall lamp costs. Furthermore, the structure's assembly and disassembly are simple, requiring fewer parts and further reducing costs. Additionally, the mold design is simple, offering high processing precision and easy dimensional modifications.
[0036] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.
Claims
1. An optical structure for optimizing the dark area of a lamp, comprising a decorative frame (1) and a frosting inner element (2), characterized in that, Includes a light source board bracket (3), the decorative frame (1) and the fogging inner part (2) are connected to the light source board bracket (3), and the decorative frame (1) is provided with a black area optimization structure (4).
2. The optical structure for optimizing the black area of the lamp according to claim 1, characterized in that: The black area optimization structure (4) includes an optical pattern (401), the decorative frame (1) is a two-color injection molding structure, the optical pattern (401) is set on the front of the decorative frame (1), and the back of the decorative frame (1) is provided with a leather texture (402).
3. The optical structure for optimizing the black area of the lamp according to claim 1, characterized in that: The inner part of the misting device (2) is provided with a first light-blocking rib (201) at one end, and the first light-blocking rib (201) abuts against the decorative frame (1).
4. The optical structure for optimizing the black area of the lamp according to claim 3, characterized in that: The light source board bracket (3) is provided with a second light-blocking rib (301), which abuts against the fogging inner component (2).
5. The optical structure for optimizing the black area of the lamp according to claim 1, characterized in that: The decorative frame (1) is provided with a first buckle (5), which is engaged with the light source board bracket (3).
6. The optical structure for optimizing the black area of the lamp according to claim 5, characterized in that: The first buckle (5) includes a first flat plate (501), one end of which is connected to a first bent plate (502).
7. The optical structure for optimizing the black area of a lamp according to claim 1, characterized in that: The inner part of the fogging device (2) is provided with a second buckle (6), which is connected to the light source board bracket (3).
8. The optical structure for optimizing the black area of the lamp according to claim 7, characterized in that: The second buckle (6) includes a second plate (601), one end of which is connected to a second bending plate (602).
9. The optical structure for optimizing the black area of a lamp according to claim 1, characterized in that: The decorative frame (1) has a light diffusion film layer on its back and the surface of the frosted inner part (2).
10. The optical structure for optimizing the black area of the lamp according to claim 4, characterized in that: The first light-blocking rib (201) and the second light-blocking rib (301) are right-angled structures.