Reflector optical system with wide-angle emission
By designing a reflection module that allows light to intersect between the first and second reflection surfaces, combined with a collimation function, the problems of uneven light distribution and insufficient angle in traditional reflector optical systems are solved, achieving large-angle emission and uniform illumination, thus improving the performance of automotive lighting systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional reflector optical systems struggle to simultaneously achieve uniform light distribution and wide-angle emission in automotive lighting systems, failing to meet the lighting requirements of auxiliary low beam headlights and corner fog lights.
The design employs a reflective module that includes a first reflective surface and a second reflective surface, where light intersects between the two. Combined with a collimation function, the projection angle is increased, and the light utilization rate and uniformity are improved through multiple reflective module arrays and a condenser lens.
It achieves vertical projection imaging and uniform illumination of light, improves the illumination angle and uniformity of automotive lighting systems, reduces blind spots, and lowers the risk of accidents.
Smart Images
Figure CN224261490U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive lighting technology, specifically relating to a large-angle reflector optical system. Background Technology
[0002] Automotive lighting systems encompass various types, including low beam headlights, high beam headlights, auxiliary low beam headlights, and corner fog lights. Auxiliary low beam headlights are specifically designed for vehicle cornering and require a wider horizontal projection angle. When a vehicle is turning, conventional low beam headlights struggle to adequately illuminate the inside of a curve, while auxiliary low beam headlights, with their wider beam angle, precisely project light onto the area in front and to the side of the vehicle, allowing the driver to clearly perceive road conditions within the curve and avoid potential hazards in advance. Corner fog lights are crucial for handling low-visibility conditions such as fog and rain. In these environments, drivers must not only focus on the road directly ahead but also be aware of the conditions on both sides of the vehicle. Corner fog lights, with their wider beam angle, effectively scatter light, expanding the illumination range, significantly reducing blind spots, and substantially lowering the probability of accidents.
[0003] Therefore, auxiliary low beam headlights and corner fog lights have strict requirements on the illumination angle. However, using traditional ordinary reflectors as reflection units can easily cause uneven light distribution; using spherical or other collimating reflection units limits the light emission angle. To simultaneously ensure illumination uniformity and meet specific light emission angle requirements, there is an urgent need to design a reflector optical system with a large-angle emission angle. Utility Model Content
[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.
[0005] Therefore, this utility model proposes a large-angle emission reflector optical system, which has the advantages of uniform light output and improved emission angle.
[0006] A large-angle emission reflector optical system according to an embodiment of the present invention includes: a light source assembly and a reflection module; the reflection module is located in the light emission direction of the light source assembly, and the reflection module includes a first reflecting surface and a second reflecting surface; the first reflecting surface has a first contour line and a first guide line, the first contour line has a first focal point, the first reflecting surface is a curved surface formed by extending the first contour line along the first guide line, and the first guide line deviates from the optical axis direction of the light source assembly; the second reflecting surface has a second contour line and a second guide line, the second contour line has a second focal point, the second reflecting surface is a curved surface formed by extending the second contour line along the second guide line, and the second guide line deviates from the optical axis direction of the light source assembly; the light source assembly is used to provide a point light source to the reflection module, and the light reflected by the first reflecting surface intersects with the light reflected by the second reflecting surface.
[0007] According to one embodiment of the present invention, the first contour line coincides with the second contour line.
[0008] According to one embodiment of the present invention, the first guide line and the second guide line are straight lines or curves.
[0009] According to one embodiment of the present invention, the first reflective surface and the second reflective surface are centrally symmetrical.
[0010] According to one embodiment of the present invention, the number of the reflection modules is multiple, and the multiple reflection modules are arranged in an array.
[0011] According to one embodiment of the present invention, the light source assembly includes a light source and a light shaping unit. The light shaping unit is located in the light emission direction of the light source. The light shaping unit includes multiple condenser lenses. The number of condenser lenses is the same as the number of reflection modules and they correspond one-to-one. The condenser lenses are used to focus the received light onto the focal point or near the focal point of the reflection module.
[0012] According to one embodiment of the present invention, the light source assembly further includes a collimation unit, which is disposed between the light source and the micro-light shaping unit, and is used to collimate the light emitted by the light source.
[0013] According to one embodiment of the present invention, it further includes a plurality of light-blocking plates, the number of which is the same as the number of reflective modules and corresponds one-to-one, and the light-blocking plate is located between its corresponding reflective module and the first focal point of the reflective module.
[0014] According to one embodiment of the present invention, the reflection module further includes a third reflection surface, which intersects with the first reflection surface and the second reflection surface, and the third reflection surface has a third focal point, which coincides with the first focal point.
[0015] The beneficial effects of this utility model are that it increases the projection angle by intersecting the light reflected by the first reflective surface and the light reflected by the second reflective surface. At the same time, since the first reflective surface and the second reflective surface have the function of collimating the light, projection imaging can be performed in the vertical direction.
[0016] 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.
[0017] 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
[0018] 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:
[0019] Figure 1 This is a three-dimensional schematic diagram showing the relative positions of the light source component and the reflection module of this utility model;
[0020] Figure 2 This is a three-dimensional structural diagram of the first and second reflecting surfaces of this utility model;
[0021] Figure 3 This is a schematic diagram of the light path in the vertical plane along the first contour line when the first contour line and the second contour line of this utility model are collinear.
[0022] Figure 4 This is a schematic diagram of the reflective module structure when the present invention has a third reflective surface;
[0023] Figure label:
[0024] 1. Light source assembly; 11. Collimation unit; 121. Micro-light shaping unit; 211. First reflecting surface; 212. Second reflecting surface; 213. Third reflecting surface. Detailed Implementation
[0025] 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.
[0026] 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.
[0027] 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.
[0028] The large-angle emission reflector optical system of this utility model is described in detail below with reference to the accompanying drawings.
[0029] like Figures 1-4 As shown, the large-angle emission reflector optical system according to an embodiment of the present invention includes: a light source assembly 1 and a reflection module; the reflection module is located in the light emission direction of the light source assembly 1, and the reflection module includes a first reflecting surface 211 and a second reflecting surface 212; the first reflecting surface 211 has a first contour line and a first guide line, the first contour line has a first focal point, the first reflecting surface 211 is a curved surface or cylindrical surface formed by extending the first contour line along the first guide line, and the first guide line deviates from the optical axis direction of the light source assembly 1; the second reflecting surface 212 has a second contour line and a second guide line, the second contour line has a second focal point, the second reflecting surface 212 is a curved surface or cylindrical surface formed by extending the second contour line along the second guide line, and the second guide line deviates from the optical axis direction of the light source assembly 1; the light source assembly 1 is used to provide multiple converging points for the reflection module as its point light source, and the light reflected by the first reflecting surface 211 intersects with the light reflected by the second reflecting surface 212, such as... Figure 2 As shown, the first reflective surface 211 and the second reflective surface 212 are arranged in a V-shaped direction.
[0030] In this embodiment, the first focal point and the second focal point can coincide or be located at different positions. When the first focal point and the second focal point are at different positions, the light source assembly 1 can provide point light sources for the first focal point and the second focal point respectively, that is, the light is focused at the first focal point and the second focal point respectively, so that the light received by the first reflecting surface 211 and the second reflecting surface 212 are collimated and reflected respectively. When the first focal point and the second focal point coincide, a single condenser lens of the light source assembly 1 only needs to provide a point light source, so that the first reflecting surface 211 and the second reflecting surface 212 share a point light source, thereby reducing the volume of the light source assembly 1. By intersecting the light reflected by the first reflecting surface 211 and the light reflected by the second reflecting surface 212, the illumination angle is increased. At the same time, since the first reflecting surface 211 and the second reflecting surface 212 have the function of collimating the light, projection imaging is performed in the vertical direction, and the road surface projection uniformity is good.
[0031] The first contour line and the second contour line can be two contour lines with different focal lengths or two contour lines with the same focal length and completely overlapping. Preferably, the first contour line and the second contour line overlap. That is, after the first contour line and the second contour line pass through the same point and are extended through the first guide line and the second guide line, the first reflective surface 211 and the second reflective surface 212 intersect and do not have a stepped surface, thus avoiding the generation of stray light and ensuring the lighting effect.
[0032] The first and second guide lines can be straight lines or curves.
[0033] The first guide line and the second guide line can be the same or different in length, and the offset angle between the first guide line and the second guide line and the optical axis direction of the light source assembly 1 can be the same or different. The specific settings can be made according to user needs. Preferably, the first reflective surface 211 and the second reflective surface 212 are centrally symmetrical.
[0034] The number of reflective modules is multiple, and multiple reflective modules are set in an array. The number of reflective modules can be set according to the area to be illuminated. The volume of the reflective modules can also be reduced by increasing the number of reflective modules, so that the light reflected by multiple reflective modules is in a similar projection area, thereby improving the uniformity of projection. The multiple reflective modules can be set in an array form according to the shape space, such as a rectangular array, a circular array, or an array in the projection direction. However, adjacent reflective modules are staggered to avoid mutual obstruction and facilitate the light reception of each reflective module.
[0035] The light source assembly 1 includes a light source and a light shaping unit 121. The light shaping unit 121 is located in the light emission direction of the light source. The light shaping unit 121 includes multiple condenser lenses. The number of condenser lenses is the same as the number of reflection modules and they correspond one-to-one. In this case, the condenser lens is used to focus the light it receives onto the first focal point of its corresponding reflection module; or the number of condenser lenses is twice the number of reflection modules, and every two condenser lenses correspond to one reflection module, so that the light is focused onto the first focal point and the second focal point or near the first focal point and the second focal point through the two condenser lenses respectively.
[0036] In this embodiment, multiple condenser lenses are used to converge the light they receive to the focal point of their respective reflection modules, which satisfies the light source requirements of the reflection modules, reduces the number of light sources, saves space, and improves the utilization rate of light.
[0037] Furthermore, the focal lengths of multiple condenser lenses can be the same or different, meaning that the focal lengths of multiple condenser lenses can be at different heights, and multiple reflecting modules are like... Figure 1 The light source component 1 is tilted towards the light emission direction, and the adjacent vertical reflective modules are staggered to optimize the distance between the light source component 1 and the multiple reflective modules, and to prevent the light source component 1 from blocking the light reflected by the reflective modules.
[0038] The light source assembly 1 also includes a collimation unit 11, which is located between the light source and the light shaping unit 121. The collimation unit 11 is used to collimate the light emitted by the light source.
[0039] It also includes multiple light-blocking plates, the number of which is the same as the number of reflective modules and they correspond one-to-one. The light-blocking plate is located between its corresponding reflective module and the first focal point of that reflective module. The shape of the light-blocking plate can be set according to the shape requirements of the light-dark cutoff line to achieve the required light-dark cutoff line.
[0040] The reflection module also includes a third reflecting surface 213, which intersects with the first reflecting surface 211 and the second reflecting surface 212. The third reflecting surface 213 has a third focal point, which coincides with the first focal point.
[0041] like Figure 4 As shown, when the third reflective surface 213 is present, the third reflective surface 213 has a third contour line, which is collinear with the first contour line. At this time, the first reflective surface 211, the second reflective surface 212, and the third reflective surface 213 are all cylindrical surfaces extending horizontally from the first contour line. Then, with the vertical direction of the first focal point as the center, the first reflective surface 211 is rotated to the left and the second reflective surface 212 is rotated to the right, respectively. At this time, a part of the third reflective surface 213 is located between the first reflective surface 211 and the second reflective surface 212 to form a reflective module with the first reflective surface 211, the second reflective surface 212, and the third reflective surface 213.
[0042] For ease of display, Figure 4 The remaining material of the first reflective surface 211, the second reflective surface 212, and the third reflective surface 213 is shown in the dashed area, which represents the specific structure of the reflective module.
[0043] 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.
[0044] 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 large-exit-angle mirror optical system characterized by comprising: include: Light source assembly (1); A reflection module is located in the light-emitting direction of the light source assembly (1), and the reflection module includes a first reflecting surface (211) and a second reflecting surface (212); The first reflective surface (211) has a first contour line and a first guide line. The first contour line has a first focal point. The first reflective surface (211) is a curved surface formed by extending the first contour line along the first guide line. The first guide line deviates from the optical axis direction of the light source assembly (1). The second reflective surface (212) has a second contour line and a second guide line. The second contour line has a second focal point. The second reflective surface (212) is a curved surface formed by extending the second contour line along the second guide line. The second guide line deviates from the optical axis direction of the light source assembly (1). The light source assembly (1) is used to provide a point light source to the reflection module, and the first reflecting surface (211) and the second reflecting surface (212) intersect.
2. The large-exit-angle mirror optical system according to claim 1, characterized by, The first contour line coincides with the second contour line.
3. The large-exit-angle mirror optical system according to claim 2, wherein The first guide line and the second guide line are either straight lines or curves.
4. The large-exit-angle mirror optical system according to claim 3, wherein The first reflecting surface (211) and the second reflecting surface (212) are centrally symmetrical.
5. The large-exit-angle mirror optical system of claim 1, wherein The number of the reflection modules is multiple, and the multiple reflection modules are arranged in an array.
6. The large-exit-angle mirror optical system of claim 5, wherein The light source assembly (1) includes a light source and a light shaping unit (121). The light shaping unit (121) is located in the light emission direction of the light source. The light shaping unit (121) includes multiple condenser lenses. The number of condenser lenses is the same as the number of reflection modules and they correspond one-to-one. The condenser lenses are used to focus the received light to the focal point or near the focal point of the reflection module.
7. The large-exit-angle mirror optical system of claim 6, wherein The light source assembly (1) further includes a collimation unit (11), which is located between the light source and the micro-light shaping unit (121). The collimation unit (11) is used to collimate the light emitted by the light source.
8. The large-exit-angle mirror optical system of claim 7, wherein It also includes multiple light-blocking plates, the number of which is the same as the number of reflective modules and they correspond one-to-one. Each light-blocking plate is located between its corresponding reflective module and the first focal point of that reflective module.
9. The large-exit-angle mirror optical system of claim 8, wherein, The reflection module further includes a third reflection surface (213), which intersects with the first reflection surface (211) and the second reflection surface (212). The third reflection surface (213) has a third focal point, which coincides with the first focal point.