Reflective thick-walled member and optical system

Abstract

The utility model discloses a kind of reflecting thick-walled parts and optical system, belong to car light illumination technical field.Reflecting thick-walled part includes light inlet portion, reflecting portion, system focal point and virtual focal point, the reflecting portion has multiple ridge lines, multiple ridge lines have a focal point, the focal point is the virtual focal point of reflecting thick-walled part, the reverse elongation line of the refracted light of light inlet portion converges in virtual focal point;The reflecting portion includes multiple total reflection units, forms efficient convergence and directional reflection to incident light, ensures that light energy is concentrated transmission to light outlet portion;The optical system of the utility model adopts the combination form of focal point and virtual focal point, effectively avoids light refraction leakage, so that more light is effectively constrained to propagate inside reflecting thick-walled part, and then make light outlet portion present uniform high-brightness visual effect, significantly enhance the recognition degree and aesthetic property of signal lamp, while reducing energy consumption, prolong the service life of light source.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting, and in particular to a reflective thick-walled component and optical system. Background Technology

[0002] Currently, with the widespread application of LED light sources in automotive lighting, more possibilities have been provided for automotive lighting design. Compared to bulbs and light guide structures, traditional reflective thick-walled components have been successfully applied to automotive signal lights due to their unique uniform lighting effect.

[0003] In existing technologies, the incident surface of a reflective thick-walled component refracts light, causing some light rays to be refracted out instead of being reflected at the reflective structure, thus reducing the utilization rate of light energy. Utility Model Content

[0004] The technical problem this invention aims to solve is: to address the light energy loss caused by refraction at the incident surface in reflective thick-walled components and optical systems, thereby improving the effective utilization rate of light. This invention provides a reflective thick-walled component and optical system that optimizes the geometric relationship between the incident surface and the reflective structure, enabling more incident light rays to meet the total internal reflection condition at the reflective interface, reducing light leakage, and thus improving illumination efficiency and brightness uniformity.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a reflective thick-walled component, the reflective thick-walled component including a light-incident part, a reflective part and a light-exiting part, the light-incident part is used to receive incident light from a light source, the reflective part is disposed in the light-exiting direction of the light-incident part, the light-exiting part is disposed in the light-exiting direction of the reflective part, the reflective part is used to receive light from the light-incident part and guide it to the light-exiting part after shaping and reflecting it. in: The reflective thick-walled component has a system focal point and a virtual focal point; The reflective part has multiple ridges, and the multiple ridges have a focal point, which is a virtual focal point of the reflective thick-walled part; The light rays emitted from the system's focal point, after being refracted by the light-incident section, converge at the virtual focal point. This allows the light rays, after being refracted by the light-incident section, to reach the reflective section and undergo efficient total internal reflection along a preset path, maximizing light energy utilization. Consequently, the light-incident section effectively controls the direction of light propagation, enabling the light rays to enter the interior of the reflective thick-walled component at a more optimal angle, reducing the light path deviation caused by initial refraction. The combination of the virtual focal point and the focal point ensures that the light rays emitted by the light source are directionally reflected by the reflective surface with minimal loss after entering the reflective thick-walled component structure. The reflective part includes multiple total reflection units, which radiate outwards from the center of the side of the reflective part closest to the light-incident part, forming a highly efficient convergence and directional reflection of the incident light, ensuring that the light energy is concentrated and transmitted to the light-emitting part. Thus, the fan-shaped distribution of the total reflection units effectively avoids light refraction and leakage, allowing more light to be effectively confined within the reflective thick-walled component for propagation, thereby giving the light-emitting part a uniform and bright visual effect, significantly enhancing the visibility and aesthetics of the signal light, while reducing energy consumption and extending the lifespan of the light source.

[0006] Furthermore, the total internal reflection unit includes at least a first reflective surface and a second reflective surface. The first and second reflective surfaces intersect and have an intersection line, which is the ridge line of the total internal reflection unit. One end of the ridge line extends from the side of the reflective part closer to the light-incident part to the side farther away from the light-incident part, and the spacing between adjacent ridge lines gradually increases along the extension direction. The backward extensions of multiple ridge lines intersect at a point, making the multiple total internal reflection units arranged in a centrally divergent layout. Thus, this layout ensures that the refracted light can accurately meet the total internal reflection condition when incident on each total internal reflection unit at different angles, effectively reducing light loss and improving the overall light guiding efficiency of the system. Compared with traditional structures, this layout is more conducive to the uniform distribution and efficient guidance of light, avoiding local dark areas caused by angle mismatch in traditional structures. At the same time, the central reflection layout makes the processing of the reflective surface area of ​​the reflective part near the light-incident part simpler, reducing the difficulty of mold manufacturing and production costs.

[0007] Furthermore, the angle between the first and second reflecting surfaces remains constant along the ridge line extension direction; when the angle remains constant, the consistency of total internal reflection conditions at different positions can be ensured, further improving the optical path control accuracy.

[0008] Furthermore, the widths of the first and second reflective surfaces gradually increase along the ridge extension direction. As the width gradually increases along the extension direction, it can effectively expand the light-receiving area of ​​the far-end reflective surface, enhance the ability to capture beams that are off-center, and reduce light leakage loss.

[0009] Furthermore, the surfaces of the first reflective surface and / or the second reflective surface are provided with optical patterns.

[0010] Furthermore, the ridge is parabolic in shape; it can effectively focus the light entering the reflective thick-walled component and reflect it along a set direction, making the light distribution more uniform and concentrated, and further improving the light efficiency.

[0011] Furthermore, the light-incident portion protrudes along the negative direction of the incident light, forming a convex structure facing the light source. This convex structure effectively reduces light scattering losses during incidence, resulting in a more compact and efficient overall optical path design.

[0012] Furthermore, the incident light from the light-incident portion is monochromatic or polychromatic light.

[0013] Furthermore, the reflective part is provided in multiple ways, and each reflective part corresponds to one of the light-incident parts. The light-emitting direction of the multiple reflective parts is all facing the light-emitting part, forming a multi-channel collaborative light guiding structure, which effectively improves the uniformity of light emission and the consistency of brightness.

[0014] Furthermore, multiple reflective elements are arranged in parallel or in a stepped distribution along the longest side of the light-emitting element.

[0015] The beneficial effects of this utility model are that the reflective thick-walled component of this utility model is provided with a reflective part having multiple ridges, and the multiple ridges have a focal point, which is the virtual focal point of the reflective thick-walled component; through the combination of the focal point and the virtual focal point, light rays can be accurately incident on the reflective part after being refracted by the incident part on the longitudinal vertical split surface of the reflective thick-walled component. The reflective part reflects the light rays along a set direction, thereby greatly improving the light utilization rate and illumination uniformity; compared with the existing reflective thick-walled components, this design significantly reduces the optical path offset and energy loss, and can still maintain efficient reflection and focusing performance, especially under large angle incident conditions.

[0016] This invention relates to a reflective thick-walled component, which comprises a scalloped pattern of reflective elements arranged by multiple total reflection units. These units radiate outwards from the center of the reflective component near the light-incident area. When viewed from the transverse and vertical planes of the reflective thick-walled component, the width of each total reflection unit gradually increases, allowing light to undergo total reflection at each stage during propagation and be guided to the light-exiting part, effectively preventing lateral leakage and energy dispersion. This scalloped pattern, combined with a gradually increasing width design, further optimizes the beam direction control and improves the brightness uniformity of the far-end region in the large-size reflective thick-walled component.

[0017] To facilitate processing and ensure efficient reflection of incident light to the light-emitting section at the center of the first or second reflective surface, this invention's reflective thick-walled component employs a centrally divergent layout of the total reflection units by converging the backward extensions of the ridge lines at a single point. Viewed from the transverse and vertical planes of the reflective thick-walled component, the tilt angle of each total reflection unit gradually increases from the center to the edge, forming a gradient light-guiding structure that effectively matches the gradient of the incident angle. This layout not only enhances the uniformity of light diffusion on the transverse plane but also significantly improves the capture efficiency of large-angle incident light, ensuring highly uniform illumination at the light-emitting section. Compared to traditional structures, the centrally divergent structure further optimizes the symmetry and stability of the light path, effectively reducing optical performance fluctuations caused by processing deviations. While ensuring high brightness output, it also improves the visual comfort of the light-emitting surface and avoids the formation of local dark areas. This design is particularly suitable for the mass production of large-size reflective thick-walled components, offering both excellent reproducibility and optical consistency.

[0018] The reflective thick-walled component of this invention expands the area of ​​the structural surface of the first or second reflective surface near the center by having multiple ridges with only one focal point and the reverse extensions of the ridges intersecting at one point, in conjunction with the light-incident part. This facilitates processing and production and improves the yield rate. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the reflective thick-walled component in Embodiment 1.

[0021] Figure 2 yes Figure 1 A side view of a thick-walled, reflective component.

[0022] Figure 3 yes Figure 1 Rear view schematic diagram of a thick-walled, reflective component.

[0023] Figure 4 yes Figure 1 A top view of a thick-walled, reflective component.

[0024] Figure 5 yes Figure 1 A magnified schematic diagram of a portion of the central reflector.

[0025] Figure 6 This is a top view schematic diagram of the reflective thick-walled component in Embodiment 2.

[0026] In the diagram: 11, light-receiving part; 111, virtual focal point; 12, reflecting part; 121, total internal reflection unit; 1211, first reflecting surface; 1212, second reflecting surface; 1213, ridge line; 1214, third reflecting surface; 1215, fourth reflecting surface; 13, light-emitting part; 2, light source. Detailed Implementation

[0027] 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.

[0028] Example 1: In existing reflective thick-walled components, the light incident section refracts the light, causing some light rays to be refracted and emitted instead of being reflected at the reflective structure. This reduces light energy utilization and affects the overall light output efficiency. To solve this problem, such as... Figures 1-5 As shown, this embodiment optimizes the reflective thick-walled component, and the specific solution is as follows: Reference Figure 1An optical system is shown, including a reflective thick-walled component and a light source 2. The reflective thick-walled component has a system focal point and a virtual focal point 111. The reflective thick-walled component is positioned in the light emission direction of the light source 2. The color of the light source 2 is not limited and can be monochromatic or polychromatic. The light source 2 is positioned at or near the system focal point of the reflective thick-walled component. Reference Figure 1 , Figure 4 The reflective thick-walled component includes an incident light section 11, a reflective section 12, and an emitting light section 13. The incident light section 11 receives incident light from the light source 2. The reflective section 12 is located in the emitting light direction of the incident light section 11, and the emitting light section 13 is located in the emitting light direction of the reflective section 12. The reflective section 12 receives light from the incident light section 11, shapes and reflects it, and then guides it to the emitting light section 13. Multiple reflective sections 12 are provided, and each reflective section 12 corresponds to one of the incident light sections 11. The multiple reflective sections 12 are arranged in parallel along the longest side of the emitting light section 13, and the emitting light direction of the multiple reflective sections 12 is towards the emitting light section 13, forming a multi-channel collaborative light guiding structure, which effectively improves the uniformity of light emission and the consistency of brightness. in: Reference Figure 1 , Figure 2 As shown, the light-incident portion 11 protrudes along the negative direction of the incident light, forming a convex structure facing the light source 2; it should be noted that in this embodiment, the light source 2 is monochromatic light; Reference Figure 1 As shown, the reflective part 12 has multiple ridges 1213, each ridge 1213 having a focal point. This focal point is the virtual focal point 111 of the reflective thick-walled component. The backward extensions of the light emitted from the light source 2 after refraction by the light incident part 11 converge at the virtual focal point 111. The reflective thick-walled component, through the combination of the virtual focal point 111 and the focal point, ensures that after the light is refracted by the light incident part 11, it can accurately reach the reflective part 12 and be efficiently reflected along a preset path, maximizing the utilization of light energy. Thus, the light incident part 11 effectively controls the direction of light propagation, allowing the light to enter the interior of the reflective thick-walled component at a better angle, reducing the light path offset caused by the initial refraction. The combination of the focal point and the virtual focal point 111 ensures that the light emitted from the light source 2 can be directionally and totally reflected by the reflective part 12 with minimal loss after entering the reflective thick-walled component structure. Reference Figure 3 As shown, the reflective part 12 includes a plurality of total reflection units 121 composed of a first reflective surface 1211 and a second reflective surface 1212. The first reflective surface 1211 and the second reflective surface 1212 intersect at an intersection line, which is a ridge line 1213 of the reflective part 12. One end of multiple ridges 1213 extends radially from the middle of the side of the reflective part 12 near the light-incident part 11 to the surrounding area. The spacing between adjacent ridges 1213 gradually increases along the extension direction. The angle between the first reflective surface 1211 and the second reflective surface 1212 bulges outward, making the reflective part 12 have a three-dimensional structure arranged in a scallop shape. To further reduce optical performance fluctuations caused by processing deviations and improve processing efficiency while ensuring high brightness output, in this embodiment, the reverse extensions of multiple ridge lines 1213 converge at a single point (e.g., Figure 3 (As shown by the dashed line), the reflector 12 has a three-dimensional structure that radiates from the center, ensuring that the directional reflection of incident light by each total internal reflection unit 121 is highly consistent, effectively suppressing the generation of stray light. At the same time, this structural design ensures that the light maintains cooperative directionality when passing through multiple total internal reflection units 121. Under large angular offset, the first reflective surface 1211 or the second reflective surface 1212 located on the outside can reflect off-axis light to another reflective surface of the same total internal reflection unit 121, realizing secondary reflection correction, thereby improving the consistency of the light output direction and the concentration of light energy.

[0029] also: Reference Figure 5 In this embodiment, the angle between the first reflecting surface 1211 and the second reflecting surface 1212 remains constant along the ridge line 1213, and the widths of the first reflecting surface 1211 and the second reflecting surface 1212 gradually increase along the ridge line 1213 to enhance the ability to capture off-axis light rays. This design effectively improves the angular tolerance of the reflector 12 to incident light while maintaining total internal reflection conditions, further optimizing the uniformity and intensity distribution of emitted light. Combined with the refraction control of the incident light part 11 and the precise matching of the virtual focal point 111, the entire optical system maintains efficient and stable light energy transmission performance under complex operating conditions. Through the synergistic optimization of the above structures, the reflector 12 achieves efficient directional reflection of light while significantly reducing its sensitivity to assembly accuracy and processing errors.

[0030] Example 2: To adapt to the tilted shape, the geometry of the reflective thick-walled component is adaptively adjusted based on Example 1, as follows: Reference Figure 6 Multiple reflective sections 12 are provided, and each reflective section 12 corresponds to a light-incident section 11. The multiple reflective sections 12 are arranged in a stepped distribution along the longest side of the light-emitting section 13, and the light-emitting direction of the multiple reflective sections 12 is towards the light-emitting section 13, forming a multi-channel collaborative light-guiding structure, which effectively improves the uniformity of light emission and the consistency of brightness.

[0031] Example 3: Based on Example 1, the total reflection unit 121 is further optimized, as follows: The surfaces of the first reflective surface 1211 and / or the second reflective surface 1212 are provided with optical patterns; the optical patterns are used to further control the distribution characteristics of reflected light; by introducing specific optical textures on the surface of the total reflection unit 121, the uniformity is improved without destroying the total reflection mechanism.

[0032] 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. A reflective thick-walled component, wherein the reflective thick-walled component is provided with an incident portion (11) and a reflective portion (12) sequentially along the light emission path, characterized in that: The reflective thick-walled component has a system focal point and a virtual focal point (111); The reflective part (12) includes a plurality of total reflection units (121), and the plurality of total reflection units (121) radiate outward from the center of the side of the reflective part (12) near the light-incident part (11) as the base point; The total internal reflection unit (121) has a ridge line (1213), and multiple ridge lines (1213) have a focal point, which is a virtual focal point (111). The light rays emitted from the system focal point or near the system focal point, after being refracted by the light incident part (11), converge at the virtual focal point (111), so that after the light rays are refracted by the light incident part (11), they can reach the reflective part (12) and be emitted after total internal reflection inside it.

2. The reflective thick-walled component as described in claim 1, characterized in that: The total reflection unit (121) includes at least a first reflecting surface (1211) and a second reflecting surface (1212), the first reflecting surface (1211) and the second reflecting surface (1212) intersect and have an intersection line, the intersection line being the ridge line (1213) of the total reflection unit (121); One end of the ridge (1213) extends from the side of the reflective part (12) near the light-incident part (11) to the side away from the light-incident part (11), and the distance between adjacent ridges (1213) gradually increases along the extension direction.

3. The reflective thick-walled component as described in claim 2, characterized in that: The ridge line (1213) is parabolic in shape, and the reverse extensions of multiple ridge lines (1213) intersect at a point, so that multiple total reflection units (121) are arranged in a centrally divergent pattern.

4. The reflective thick-walled component as described in claim 3, characterized in that: The angle between the first reflective surface (1211) and the second reflective surface (1212) remains unchanged along the ridge line (1213).

5. The reflective thick-walled component as described in claim 4, characterized in that: The width of the first reflective surface (1211) and the width of the second reflective surface (1212) gradually increase along the extension direction of the ridge line (1213).

6. The reflective thick-walled component as described in claim 5, characterized in that: The incident light of the light-incident part (11) is monochromatic or polychromatic.

7. The reflective thick-walled component as described in claim 5, characterized in that: The surfaces of the first reflective surface (1211) and / or the second reflective surface (1212) are provided with optical patterns.

8. The reflective thick-walled component as described in claim 1, characterized in that: The light-incident portion (11) protrudes along the negative direction of the incident light.

9. The reflective thick-walled component as described in claim 1, characterized in that: The reflective part (12) is provided in multiple ways, and the reflective part (12) corresponds to the light-incident part (11) one by one. The light-emitting direction of the multiple reflective parts (12) is all facing the light-emitting part (13).

10. An optical system, characterized in that: Includes a reflective thick-walled component and a light source (2) as described in any one of claims 1-9, wherein the light source (2) is located at or near the system focal point.

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