Optical system and vehicle lamp implementing functional multiplexing
By designing multifocal lenses and reflectors, the reuse of different colors of light in the automotive lighting system was achieved, solving the problems of uneven lighting effect and space limitations, thus improving efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-19
AI Technical Summary
In existing automotive lighting designs, the optical systems that reuse functions suffer from poor uniformity of illumination due to space constraints, and different colors of light cannot be at the focal point simultaneously, resulting in reduced efficiency, increased power consumption, and high costs.
By employing a multifocal lens structure and a reflector, the design of multiple focal points in the lens structure and the reflector enables the reuse of different colors of light and improves the uniformity of light without defocusing. The reflector reduces the sidewall area through the design of the reflective unit surface and the connecting surface, thereby increasing the light contact area and diffusion angle.
It improves the efficiency of the optical system, reduces power consumption and heat, and reduces costs. At the same time, it achieves uniform light distribution and expands the diffusion angle of the mirror in a narrow shape, solving the problem of uneven light pattern.
Smart Images
Figure CN224381311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle lighting technology, and in particular to an optical system and vehicle lamp that achieves multiple functions. Background Technology
[0002] Current vehicle headlight designs typically use white light for daytime running, yellow light for turn signals, and red light for braking to differentiate signals. However, with increasingly compact headlight structures, existing headlights are employing multifunctional optical systems to meet integrated design requirements.
[0003] However, different colors of light require different light sources. If conventional solutions are used, since there is only one focal point for the collimation structure at the light input end, multiple light sources cannot all be at the focal point. This leads to a reduction in the overall efficiency of the optical system, which in turn affects the lighting effect of the headlights and issues such as heat, power consumption, and cost. If each light source is equipped with a collimation structure at the light input end, a larger installation space is required.
[0004] Secondly, current design trends tend to favor sloping and narrow spaces, which greatly limits the arrangement of light sources, resulting in the inability to meet requirements for light emission uniformity and efficiency. Utility Model Content
[0005] The technical problem to be solved by this utility model is: in order to solve the problem of poor uniformity of lighting effect in existing optical systems that realize functional multiplexing due to space limitations, this utility model provides an optical system that realizes functional multiplexing. Through the combination of multi-focal lens structure and reflector, multiplexing can be achieved among multiple light rays, and the uniformity of light is improved without each light ray defocusing.
[0006] The technical solution adopted by this utility model to solve its technical problem is: an optical system for realizing functional multiplexing, comprising:
[0007] A lens structure, the lens structure including an incident light part and an exit light part, the exit light part including at least a first structural surface and a second structural surface, the first structural surface having a first focal point F1, the second structural surface having a second focal point F2, so as to collimate the light emitted at the first focal point F1 through the first structural surface, and the second structural surface being adapted to collimate the light emitted at the second focal point F2.
[0008] A reflector is disposed in the light-emitting direction of the lens structure. The reflector includes a plurality of reflective unit surfaces, which receive light emitted from the lens structure and reflect it outward.
[0009] The light source has an incident light section positioned in the light emitting direction. The light source is capable of emitting light of different colors, and the focal point of the light source corresponds to the two focal points of the lens structure.
[0010] Therefore, the lens structure collimates the light rays emitted from the corresponding focal point only through the first and second structural surfaces, thus ensuring that multiple light rays can be reused and that each light ray remains in focus, resulting in higher efficiency, effectively saving power and heat, and reducing costs. Based on this lens structure, the reflector changes the direction of light propagation, thereby breaking the limitation of front and back length, making the optical structure occupy less space and suitable for inclined and narrow design spaces.
[0011] To address the issue of uneven illumination from the side view caused by the excessively tilted headlight cover and large height difference between optical units in a steeply sloping headlight design:
[0012] Furthermore, the reflective unit surface includes a reflective surface and a connecting surface, the reflective surface and the connecting surface are intersecting, and one side of the connecting surface and one side of the reflective surface are connected to form an intersection line; the intersection line extends from one edge of the reflective unit surface to the other edge, and the intersection line is intersecting the light output direction of the lens structure; the width of the connecting surface is smaller than that of the reflective surface;
[0013] A plurality of reflective unit surfaces are arranged laterally to form a reflector. The intersection lines of the reflective unit surfaces are parallel, and the reflective surface of each reflective unit surface is connected to the connecting surface of an adjacent reflective unit surface. Each reflective surface is parallel, and each connecting surface is parallel, so that the multiple reflective unit surfaces are arranged in a stepped manner. Thus, adjacent reflective surfaces are connected by connecting surfaces, which reduces the sidewall area compared to existing gradient reflectors, thereby reducing the dark area and weakening the difference between light and dark. The light contact area is increased on the same unit area, thereby increasing the light utilization rate, expanding the horizontal diffusion angle of the reflector, and effectively solving the problem of uneven light pattern.
[0014] Furthermore, the reflective surface is provided with light distribution patterns or textures.
[0015] Furthermore, the reflective surface is an arc surface, and adjacent reflective surfaces are connected by a connecting surface; the maximum chord length of the reflective surface is greater than the width of the connecting surface; thereby increasing the effective area and improving system efficiency.
[0016] Furthermore, the reflective surface is provided with a corn kernel pattern along the intersection line; thereby improving the light uniformity of the reflector.
[0017] Furthermore, the surface of the reflective unit is coated with aluminum; the reflectivity and film thickness of the aluminum coating can be set as needed to provide better light reflection effect for the reflector, and the focal length and size of the reflective unit can be adjusted according to actual usage requirements.
[0018] Furthermore, the positional relationship between the reflector and the lens structure can be adjusted according to actual usage requirements.
[0019] To enable the reuse of multiple light rays, each light ray remains in focus:
[0020] Furthermore, both the first structural surface and the second structural surface are freeform surfaces, and the first structural surface and the second structural surface are suitable for shearing and splicing. The splicing of the first structural surface and the second structural surface can form a first included angle a or a second included angle b, and the first included angle a is greater than the second included angle b.
[0021] Furthermore, after the first structural surface is sheared, a first structural part and a second structural part can be formed, and after the second structural surface is sheared, a third structural part and a fourth structural part can be formed.
[0022] Furthermore, the first structural part and the third structural part are spliced together to form a first included angle α; thereby, the light rays of the first focal point F1 enter the lens structure from the light entrance part, are collimated by the first structure and then exit, and the light rays of the second focal point F2 enter the lens structure from the light entrance part, are collimated by the third structure and then exit.
[0023] Furthermore, the second structural part and the fourth structural part are spliced together to form a second included angle b; thereby, the light rays of the first focal point F1 enter the lens structure from the light entrance part, are collimated by the second structure and then exit, and the light rays of the second focal point F2 enter the lens structure from the light entrance part, are collimated by the fourth structure and then exit.
[0024] Furthermore, the light-emitting part also includes a third structural surface, a fourth structural surface, a fifth structural surface, and a sixth structural surface, and the light rays of the first focal point F1 are collimated only through the first structural surface, the third structural surface, and the fifth structural surface, and the light rays of the second focal point F2 are collimated only through the second structural surface, the fourth structural surface, and the sixth structural surface.
[0025] Furthermore, adjacent structural surfaces of the first, second, third, fourth, fifth, and sixth structural surfaces are suitable for splicing together to form a first included angle a and / or a second included angle b.
[0026] Furthermore, the light-incident portion is planar, and the surface of the light-incident portion is provided with vertical stripes; the vertical stripes can also be replaced according to actual usage requirements.
[0027] Furthermore, the forward projection width of each surface of the light-emitting part is 1.5mm, ensuring a balance between light efficiency and miniaturization.
[0028] The beneficial effects of this utility model are that the optical system of this utility model that realizes multiple functions adopts an optical scheme of multifocal lens + reflector, which is suitable for tilted and narrow shapes, and at the same time improves the uniformity of illumination.
[0029] The optical system of this invention, which enables multiple functions, incorporates a lens structure. Its light-emitting section consists of multiple sets of structural surfaces, each corresponding to either a first focal point F1 or a second focal point F2, achieving selective collimation of light rays at different focal points. The freeform surface cutting and splicing technique can create specific angles, optimizing the precision of optical path control.
[0030] The optical system of this invention, which enables multiple functions, is equipped with a reflector, which is composed of several linearly arranged reflective unit surfaces for directional light reflection. The reflector reduces the sidewall area, thereby reducing the dark area and weakening the difference between light and dark. The light contact area is increased on the same unit area, thereby increasing the light utilization rate, expanding the horizontal diffusion angle of the reflector, and effectively solving the problem of uneven light pattern. Attached Figure Description
[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0032] Figure 1 This is a schematic diagram of the optical system that enables functional reuse in this utility model.
[0033] Figure 2 yes Figure 1 A schematic diagram showing the positional relationship between the light source, lens structure, and reflector.
[0034] Figure 3 This is a schematic diagram of the reflector structure in Example 1.
[0035] Figure 4 yes Figure 3 A schematic diagram showing the positional relationship between the central reflecting surface and the connecting surface.
[0036] Figure 5 This is a simplified schematic diagram of the reflector structure in Embodiment 2.
[0037] Figure 6 This is a schematic diagram of the reflector structure in Embodiment 3.
[0038] Figure 7 This is a simplified schematic diagram of the light-emitting part of the lens structure in Embodiment 4.
[0039] Figure 8 yes Figure 7 A schematic diagram of the first type of light output from the middle lens structure.
[0040] Figure 9 yes Figure 7 A schematic diagram of the second type of light output from the middle lens structure.
[0041] Figure 10 This is a simplified schematic diagram of the light-emitting part of the lens structure in Embodiment 5.
[0042] Figure 11 yes Figure 10 A schematic diagram of the light output from the middle lens structure.
[0043] In the figure: 1. Lens structure; 11. Light-entry section; 12. Light-exit section; 121. First structural surface; 1211. First structural part; 1212. Second structural part; 122. Second structural surface; 1221. Third structural part; 1222. Fourth structural part; 123. Third structural surface; 124. Fourth structural surface; 125. Fifth structural surface; 126. Sixth structural surface; 2. Reflector; 21. Reflecting unit surface; 211. Reflecting surface; 212. Connecting surface; 3. Light source. Detailed Implementation
[0044] 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.
[0045] like Figure 1 , Figure 2 As shown, an optical system for achieving functional multiplexing includes:
[0046] Lens structure 1 includes a light-incident section 11 and a light-outceasing section 12. The light-outceasing section 12 includes at least a first structural surface 121 and a second structural surface 122. The first structural surface 121 has a first focal point F1, and the second structural surface 122 has a second focal point F2, so that the light emitted from the first focal point F1 can be collimated through the first structural surface 121. The second structural surface 122 is adapted to collimate the light emitted from the second focal point F2.
[0047] The reflector 2 is positioned in the light-emitting direction of the lens structure 1. The reflector 2 includes a plurality of reflective unit surfaces 21, which receive light emitted from the lens structure 1 and reflect it out.
[0048] The light source 3 has an incident light section 11 positioned in the light-emitting direction of the light source 3. The light source 3 can emit light of different colors, and the focal points of the light source 3 correspond to the first focal point F1 and the second focal point F2, respectively. The light emitted by the light source 3 is irradiated to the light-emitting section 12 via the incident light section 11.
[0049] Therefore, the lens structure 1 collimates only the light rays emitted from the corresponding focal point through the first structural surface 121 and the second structural surface 122, thereby ensuring that multiple light rays can be reused and that each light ray remains in focus, resulting in higher efficiency, effectively saving power consumption and heat, and reducing costs. Based on this lens structure 1, the reflector 2 changes the direction of light propagation, thereby solving the problem of poor illumination uniformity in the tilted shape.
[0050] Among them: the light-incident part 11 is a plane, and the surface of the light-incident part 11 is provided with vertical stripes; the vertical stripes can also be replaced according to actual use requirements; thereby initially controlling the light scattering angle and improving the lighting uniformity at large side viewing angles.
[0051] Example 1: Refer to Figure 3 , Figure 4 To address the issue of uneven side illumination caused by the large height difference between optical units due to the overly tilted headlight cover in a steeply sloping design, the following addition was made to the aforementioned structure:
[0052] The reflective unit surface 21 includes a reflective surface 211 and a connecting surface 212. The reflective surface 211 and the connecting surface 212 are intersected. One side of the connecting surface 212 is connected to one side of the reflective surface 211 to form an intersection line. The intersection line extends from one edge of the reflective unit surface 21 to the other edge and intersects with the light output direction of the lens structure 1. The width of the connecting surface 212 is smaller than that of the reflective surface 211.
[0053] A plurality of reflective unit surfaces 21 are arranged laterally to form a reflector 2. The lines of intersection of the reflective unit surfaces 21 are parallel, and the reflective surface 211 of the reflective unit surface 21 and the connecting surface 212 of the adjacent reflective unit surface 21 are connected. Each reflective surface 211 is arranged in parallel, and each connecting surface 212 is arranged in parallel, so that the multiple reflective unit surfaces 21 are arranged in a stepped manner (see reference). Figure 4 Thus, the reflective surfaces 211 of adjacent reflective unit surfaces 21 are connected by the connecting surface 212. Compared with the existing gradient reflectors, by limiting the width of the connecting surface 212 of the non-optical surface, the side wall area is reduced, the dark area is reduced, and the difference between light and dark is weakened. The stepped reflectors 2 are adapted to the large tilt shape. The distance between the reflective surfaces 211 is shortened due to the shortened width of the connecting surface 212. The light contact area is increased on the same unit area, thereby increasing the light reflection efficiency and expanding the horizontal diffusion angle of the reflectors 2. As a result, the illumination uniformity is good when viewed from the side. At the same time, the problem of uneven light pattern is effectively solved.
[0054] Among them: the surface of the reflective surface 211 is provided with light distribution patterns or textures; the positional relationship between the reflector 2 and the lens structure 1 can be adjusted according to actual usage requirements.
[0055] Example 2: Refer to Figure 5 The difference from Example 1 is that:
[0056] The reflective surface 211 is an arc surface, and adjacent reflective surfaces 211 are connected by a connecting surface 212; the maximum chord length of the reflective surface 211 is greater than the width of the connecting surface 212; thus, the horizontal diffusion angle of the reflector 2 is increased.
[0057] Example 3: Refer to Figure 6 The difference from Example 1 is that:
[0058] The reflective surface 211 is arranged with a corn kernel pattern along the intersection line direction; in addition, the surface of the reflective unit surface 21 is coated with aluminum; the aluminum reflectivity and film thickness can be set as needed to provide better light reflection effect for the reflector 2, and the focal length and size of the reflective unit can be adjusted according to actual usage requirements.
[0059] Example 4: Figures 7-9 As shown, in order to achieve multiplexing of various light rays without defocusing each light ray, the following is added based on Embodiment 1, Embodiment 2, or Embodiment 3:
[0060] Reference Figure 7 Both the first structural surface 121 and the second structural surface 122 are free-form surfaces. The first structural surface 121 and the second structural surface 122 are suitable for shearing and splicing. After shearing, the first structural surface 121 can form a first structural part 1211 and a second structural part 1212. After shearing, the second structural surface 122 can form a third structural part 1221 and a fourth structural part 1222.
[0061] Reference Figure 8 The first structural part 1211 and the third structural part 1221 are spliced together to form a first included angle α. The first structural part 1211 and the third structural part 1221 are combined to form a first light emission form. Thus, the light rays of the first focal point F1 enter the lens structure 1 from the light entrance part 11 and are collimated by the first structure before being emitted. The light rays of the second focal point F2 enter the lens structure 1 from the light entrance part 11 and are collimated by the third structure before being emitted.
[0062] Reference Figure 9 The second structural part 1212 and the fourth structural part 1222 are spliced to form a second included angle b. The second structural part 1212 and the fourth structural part 1222 are combined to form a second light emission form. Thus, the light rays of the first focal point F1 enter the lens structure 1 from the light entrance part 11 and are collimated by the second structure before being emitted. The light rays of the second focal point F2 enter the lens structure 1 from the light entrance part 11 and are collimated by the fourth structure before being emitted.
[0063] Wherein: the first included angle a is greater than the second included angle b, and the forward projection width of the first structural surface 121 and the second structural surface 122 is 1.5mm.
[0064] Example 5: Figures 10-11 As shown, based on Example 1, Example 2, or Example 3, the following is added:
[0065] Reference Figure 10 The light-emitting section 12 also includes a third structural surface 123, a fourth structural surface 124, a fifth structural surface 125, and a sixth structural surface 126. The light rays from the first focal point F1 are collimated by the first structural surface 121, the third structural surface 123, and the fifth structural surface 125, and the light rays from the second focal point F2 are collimated by the second structural surface 122, the fourth structural surface 124, and the sixth structural surface 126 (see reference). Figure 11 ).
[0066] Among them, the first structural surface 121, the second structural surface 122, the third structural surface 123, the fourth structural surface 124, the fifth structural surface 125 and the sixth structural surface 126 are connected by splicing. The first structural surface 121, the second structural surface 122, the third structural surface 123, the fourth structural surface 124, the fifth structural surface 125 and the sixth structural surface 126 form a first included angle a and / or a second included angle b with the adjacent structural surfaces, thereby forming two combined light emission forms.
[0067] The forward projection width of the first structural surface 121, the second structural surface 122, the third structural surface 123, the fourth structural surface 124, the fifth structural surface 125, and the sixth structural surface 126 is 1.5 mm.
[0068] 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 system implementing functional multiplexing, characterized by: include A lens structure (1) includes an incident light portion (11) and an exit light portion (12). The exit light portion (12) includes at least a first structural surface (121) and a second structural surface (122). The first structural surface (121) has a first focal point F1, and the second structural surface (122) has a second focal point F2, so that the light emitted from the first focal point F1 can be collimated by the first structural surface (121), and the second structural surface (122) is adapted to collimate the light emitted from the second focal point F2. A reflector (2) is disposed in the light-emitting direction of the lens structure (1). The reflector (2) includes a plurality of reflective unit surfaces (21). The reflective unit surfaces (21) receive light emitted from the lens structure (1) and reflect it out. The light source (3) has an incident light part (11) disposed in the light output direction of the light source (3). The light source (3) can emit light of different colors, and the focal point of the light source (3) corresponds to the two focal points of the lens structure (1).
2. The optical system implementing functional multiplexing of claim 1, wherein: The reflective unit surface (21) includes a reflective surface (211) and a connecting surface (212). The reflective surface (211) and the connecting surface (212) are intersecting. One side of the connecting surface (212) is connected to one side of the reflective surface (211) to form an intersection line. The intersection line extends from one edge of the reflective unit surface (21) to the other edge and intersects with the light emission direction of the lens structure (1). The width of the connecting surface (212) is smaller than that of the reflective surface (211). A plurality of the aforementioned reflective unit surfaces (21) are arranged in a horizontal manner to form a reflector (2). The lines of intersection of the reflective unit surfaces (21) are arranged in parallel. The reflective surface (211) of the reflective unit surface (21) and the connecting surface (212) of the adjacent reflective unit surface (21) are connected. Each of the reflective surfaces (211) is arranged in parallel, and each of the connecting surfaces (212) is arranged in parallel, so that the plurality of reflective unit surfaces (21) are arranged in a stepped manner.
3. The optical system implementing functional multiplexing of claim 2, wherein: The light-incident part (11) and / or the reflective surface (211) are provided with light distribution patterns or textures.
4. The optical system implementing functional multiplexing of claim 3, wherein: The reflective surface (211) is an arc surface, and adjacent reflective surfaces (211) are connected by a connecting surface (212).
5. The optical system for achieving functional multiplexing as described in claim 3, characterized in that: The reflective surface (211) is provided with a corn kernel pattern.
6. The optical system for achieving functional multiplexing as described in claim 3, characterized in that: The surface of the reflective unit surface (21) is plated with aluminum.
7. The optical system for achieving functional multiplexing as described in claim 1, characterized in that: Both the first structural surface (121) and the second structural surface (122) are freeform surfaces. The first structural surface (121) and the second structural surface (122) are suitable for shearing and splicing. The first structural surface (121) and the second structural surface (122) are spliced together to form a first included angle a or a second included angle b, and the first included angle a is greater than the second included angle b.
8. The optical system for achieving functional multiplexing as described in claim 1, characterized in that: The light-emitting part (12) further includes a third structural surface (123), a fourth structural surface (124), a fifth structural surface (125), and a sixth structural surface (126). The light rays of the first focal point F1 are collimated by the first structural surface (121), the third structural surface (123), and the fifth structural surface (125), and the light rays of the second focal point F2 are collimated by the second structural surface (122), the fourth structural surface (124), and the sixth structural surface (126).
9. The optical system for realizing functional multiplexing as described in claim 8, characterized in that: The adjacent structural surfaces of the first structural surface (121), the second structural surface (122), the third structural surface (123), the fourth structural surface (124), the fifth structural surface (125), and the sixth structural surface (126) are suitable for splicing to form a first included angle a and / or a second included angle b.
10. A vehicle light, characterized in that: Including the optical system for achieving functional multiplexing as described in any one of claims 1-9.