Reflecting mirror, optical module, vehicle lamp and vehicle
By setting textures of different depths on the reflectors and light guide components, the problem of uneven illumination of the headlights was solved, resulting in more uniform lighting effects and higher light intensity, reducing production costs and heat, and improving the quality of the headlights.
Patent Information
- Application Number
- CN202520389491.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing headlights have poor illumination uniformity when viewed from multiple angles, and conventional reflector solutions cause glare and bright spots, affecting headlight quality.
The reflective cavity wall design of the reflector is equipped with first and second textures of different depths. The first texture is used to diffuse and soften the light, while the second texture is used to diffuse and distribute the light significantly. Combined with the texture design of the light guide component, the uniformity and intensity of the illumination are enhanced.
It improves the uniformity of headlight illumination from multiple viewing angles, reduces glare and bright spots, lowers production costs and heat generation, and extends the lifespan of headlights.
Smart Images
Figure CN223855447U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle lighting, in particular to a reflector, an optical module, a vehicle lamp and a vehicle. BACKGROUND
[0002] With the continuous development of the automobile field, the lighting effect requirements for automobile lamps are also continuously improving. Due to the high brightness requirement of vehicle lamp regulations, the conventional implementation methods are mostly side-throw reflector schemes, thick wall schemes and light guide schemes, and the uniformity of vehicle lamp lighting under multi-angle observation is poor.
[0003] Therefore, it is necessary to improve the prior art. CONTENT OF THE UTILITY MODEL
[0004] The present application aims to at least solve one of the technical problems existing in the prior art, and provides a reflector, an optical module, a vehicle lamp and a vehicle.
[0005] According to an aspect of the present application, a reflector is provided, having a reflection cavity configured to reflect light incident to the cavity wall of the reflection cavity to the light exit side of the reflector; the cavity wall of the reflection cavity is divided into a first reflection wall surface and a second reflection wall surface; the first reflection wall surface includes reflection sub-surfaces and connecting sub-surfaces, the reflection sub-surfaces are arranged in sequence and multiple reflection sub-surfaces are provided, the reflection sub-surfaces are provided with reflection patterns, and the connecting sub-surfaces are connected between adjacent two reflection sub-surfaces; the second reflection wall surface is arranged around the side of the first reflection wall surface; the reflection sub-surfaces are provided with first skin patterns, and the connecting sub-surfaces and the second reflection wall surface are provided with second skin patterns, and the depth of the first skin pattern is less than the depth of the second skin pattern.
[0006] In one embodiment, the depth of the first skin pattern is h1 pm, satisfying: 6≤h1≤10; and the depth of the second skin pattern is h2 pm, satisfying: 12≤h2≤20.
[0007] According to another aspect of the present application, an optical module is provided, comprising the aforementioned reflector; the optical module further comprises a first light guide component configured to receive light emitted from the reflector; the light entrance surface of the first light guide component is provided with a third skin pattern, the light exit surface of the first light guide component is provided with a fourth skin pattern, and the depth of the third skin pattern is less than the depth of the fourth skin pattern.
[0008] In one embodiment, the depth of the first skin pattern is greater than the depth of the third skin pattern and the fourth skin pattern.
[0009] In one embodiment, the depth of the third skin pattern is h3 pm, satisfying: 0.3≤h3≤0.5; and the depth of the fourth skin pattern is h4 pm, satisfying: 2≤h4≤4.
[0010] In one embodiment, a light mixing plate is further included, and the light mixing plate is disposed between the reflector and the first light guide component.
[0011] In one embodiment, a decorative ring is further included, and the decorative ring is disposed around the first light guide component, and the decorative ring is connected to the reflector through a connecting structure; the connecting structure includes a positioning column, a first positioning hole, a second positioning hole, a connecting hole, a connecting column, and a screw; the positioning column is disposed on a surface of the decorative ring facing the light mixing plate, the first positioning hole is disposed on the light mixing plate, the connecting column, the connecting hole, and the second positioning hole are disposed on the reflector; the positioning column is inserted into the first positioning hole and the second positioning hole to define the relative positions of the decorative ring, the light mixing plate, and the reflector in the radial direction of the positioning column; and the screw is screwed into the connecting column through the connecting hole to press the light mixing plate between the decorative ring and the reflector.
[0012] In one embodiment, a printed circuit board and a heat dissipation plate are further included, and the heat dissipation plate is attached to the printed circuit board.
[0013] According to another aspect of the present application, a vehicle lamp is provided, which includes the optical module as described above.
[0014] According to another aspect of the present application, a vehicle is provided, which includes the vehicle lamp as described above.
[0015] The present application has the following beneficial effects: the first skin with a small depth is arranged on the reflecting sub-surface to increase the reflecting and diffusing efficiency of the reflecting sub-surface, disperse and soften the light incident on the reflecting sub-surface, and ensure the uniformity of the vehicle lamp lighting; the second skin greatly diffuses and distributes the light incident on the second skin, avoids the occurrence of mirror reflection to cause glare and bright spots, and re-diffuses and distributes the stray light originally forming glare, bright spots, and the like, thereby enhancing the overall illumination intensity. BRIEF DESCRIPTION OF DRAWINGS
[0016] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application, taken in conjunction with the accompanying drawings.
[0017] Figure 1 is a schematic view of a reflector provided by an embodiment of the present application.
[0018] Figure 2 is a schematic view of a connecting structure provided by an embodiment of the present application.
[0019] Figure 3 is an exploded view of Figure 2 .
[0020] Figure 4is a sectional view of a vehicle lamp provided by an embodiment of the present application.
[0021] In the drawings:
[0022] 10, mirror; 11, reflecting cavity; 111, first reflecting wall surface; 1111, reflecting sub-surface; 1112, connecting sub-surface; 112, second reflecting wall surface;
[0023] 20, first light guide component;
[0024] 30, light homogenizing plate;
[0025] 40, decorative ring;
[0026] 50, connecting structure; 51, positioning column; 52, first positioning hole; 53, second positioning hole; 54, connecting hole; 55, connecting column; 56, screw;
[0027] 60, printed circuit board;
[0028] 70, heat dissipation plate;
[0029] 80, shell;
[0030] 90, second light guide component. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0032] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection” and “linking” should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] The mirror, optical module, vehicle lamp and vehicle in the present application will be described in detail below with reference to the drawings and specific embodiments.
[0034] In the prior art, the uniformity of vehicle lamp lighting under multi-angle observation is poor, and the quality of the vehicle lamp is poor.
[0035] To solve the above technical problems, the embodiment of the present application provides a reflector, which has a reflection cavity configured to reflect light incident to the cavity wall of the reflection cavity to the light exit side of the reflector; the cavity wall of the reflection cavity is divided into a first reflection wall surface and a second reflection wall surface; the first reflection wall surface includes reflection sub-surfaces and connecting sub-surfaces, the reflection sub-surfaces are sequentially arranged in multiple, the reflection sub-surfaces are provided with reflection patterns, and the connecting sub-surfaces are connected between adjacent two reflection sub-surfaces; the second reflection wall surface is arranged around the first reflection wall surface; the reflection sub-surfaces are provided with first skin patterns, the connecting sub-surfaces and the second reflection wall surface are provided with second skin patterns, and the depth of the first skin patterns is smaller than the depth of the second skin patterns. Details are described below.
[0036] Referring to Figure 1 In an embodiment, the reflector 10 has a reflection cavity 11 configured to reflect light incident to the cavity wall of the reflection cavity 11 to the light exit side of the reflector 10; the cavity wall of the reflection cavity 11 is divided into a first reflection wall surface 111 and a second reflection wall surface 112; the first reflection wall surface 111 includes reflection sub-surfaces 1111 and connecting sub-surfaces 1112, the reflection sub-surfaces 1111 are sequentially arranged in multiple, the reflection sub-surfaces 1111 are provided with reflection patterns, and the connecting sub-surfaces 1112 are connected between adjacent two reflection sub-surfaces 1111; the second reflection wall surface 112 is arranged around the first reflection wall surface 111; the reflection sub-surfaces 1111 are provided with first skin patterns, the connecting sub-surfaces 1112 and the second reflection wall surface 112 are provided with second skin patterns, and the depth of the first skin patterns is smaller than the depth of the second skin patterns.
[0037] By setting the first skin pattern with smaller depth (relative to the second skin pattern) on the reflection sub-surface 1111, the reflection and diffusion efficiency of the reflection sub-surface 1111 is increased, the light incident to the reflection sub-surface 1111 is diffused and softened, and the uniformity of the vehicle lamp lighting is ensured; the second skin pattern diffuses and distributes the light incident to the second skin pattern by a large degree (compared with the diffusion degree of the light incident to the first skin pattern), avoids the occurrence of mirror reflection leading to glare and bright spots, and re-diffuses and distributes the stray light originally forming glare, bright spots and the like, thereby enhancing the overall illumination intensity.
[0038] The depth of the first skin pattern is small, which avoids excessive diffusion of light and ensures the uniformity of lighting, and the depth of the second skin pattern is large, which increases the diffusion efficiency of light, reduces the energy of the light diffused by the second skin pattern, avoids the occurrence of bright spots and the like, and re-distributes the stray light originally forming bright spots and the like, thereby reducing the number of light emitting units, reducing the production cost, reducing the heat generated during use of the vehicle lamp, and effectively prolonging the service life of the vehicle lamp.
[0039] It should be noted that the light-emitting unit is generally only an LED lamp bead, that is, a smaller number of LED lamp beads can meet the light illumination requirement of the vehicle lamp, and through the arrangement of the first skin lines and the second skin lines, the uniformity of the vehicle lamp under multi-view observation can be ensured, and the quality of the vehicle lamp is improved.
[0040] In an embodiment, the depth of the first skin lines is h1 μm, and satisfies: 6≤h1≤10, such as 6, 7, 8, 9, 10, etc.; the depth of the second skin lines is h2 μm, and satisfies: 12≤h2≤20, such as 12, 14, 16, 18, 20, etc.
[0041] When the value of h1 is less than 6, the depth of the first skin lines is too small, and the diffusion degree of the light incident on the first skin lines is small, which is not conducive to the uniformity of the vehicle lamp lighting; when the value of h1 is greater than 10, the depth of the first skin lines is too large, which causes the light incident on the first skin lines to be too divergent, so that the energy of the reflected light is too low, which reduces the overall lighting brightness of the vehicle lamp, and when the depth of the first skin lines is large, the processing difficulty of the first skin lines also increases, which increases the production cost.
[0042] Similarly, when the value of h2 is less than 12, the depth of the second skin lines is too small, and the diffusion degree of the light incident on the second skin lines is small, so that the stray light forming the light spot cannot be completely diffused and redistributed, which is not conducive to the uniformity of the vehicle lamp lighting; when the value of h2 is greater than 20, the depth of the second skin lines is too large, which causes the light incident on the second skin lines to be too divergent, so that the energy of the reflected light is too low, which is not conducive to the overall lighting of the vehicle lamp, and when the depth of the second skin lines is large, the processing difficulty of the second skin lines also increases, which increases the production cost.
[0043] It should be noted that in some embodiments, the values of h1 and h2 can also be out-of-range values, as long as h1 is less than h2, to ensure that the diffusion of light by the first skin lines meets the uniformity of lighting and the second skin lines redistribute the stray light to enhance the light illumination.
[0044] Referring to Figure 2 and Figure 3 , the application also relates to an optical module, which comprises any one of the aforementioned mirrors 10, and further comprises a first light guide component 20 configured to receive the light emitted from the mirror 10; the light inlet surface of the first light guide component 20 is provided with third skin lines, and the light outlet surface of the first light guide component 20 is provided with fourth skin lines, and the depth of the third skin lines is less than that of the fourth skin lines.
[0045] In the embodiment, the third skin texture has a smaller depth (relative to the fourth skin texture), which avoids excessive divergence of light while ensuring uniformity of lighting and light transmittance, and ensures that the lighting brightness of the vehicle lamp meets the design requirements; the fourth skin texture has a larger depth, which increases the diffusion efficiency of light and increases the illumination range of the vehicle lamp, and because the fourth skin texture has a larger depth, it can better shield the internal mounting structure and defects, and in the static state (unlit state) of the vehicle lamp, the mounting structure and defects inside the vehicle lamp are avoided from being seen, and the quality of the vehicle lamp is improved.
[0046] The skin textures with different depths are arranged on the light-out side and the light-in side of the first light guide component 20, which ensures the diffusion effect of the first light guide component 20 while ensuring the overall light-out efficiency, so that the lighting brightness of the vehicle lamp meets the use requirements.
[0047] It should be noted that in some embodiments, the first light guide component 20 is provided with a decorative ring 40 on the peripheral side, which can shield the mounting structure and defects inside the vehicle lamp, which will not be described here.
[0048] In an embodiment, the depth of the first skin texture is greater than the depths of the third skin texture and the fourth skin texture.
[0049] In the embodiment, the depths of the third skin texture and the fourth skin texture are both smaller than the depth of the first skin texture, which avoids excessive divergence of light when passing through the third skin texture and the fourth skin texture, which reduces the energy of the light and in turn reduces the overall lighting brightness.
[0050] Through the arrangement of the third skin texture and the fourth skin texture, the uniformity of the lighting of the vehicle lamp can be ensured while the lighting brightness of the vehicle lamp meets the design requirements; and the depths of the third skin texture and the fourth skin texture are smaller than the first skin texture, which reduces the production difficulty of the third skin texture and the fourth skin texture and reduces the production cost.
[0051] In an embodiment, the depth of the third skin texture is h3 μm, which satisfies 0.3≤h3≤0.5, such as 0.3, 0.4, 0.5, etc.; and the depth of the fourth skin texture is h4 μm, which satisfies 2≤h4≤4, such as 2, 3, 4, etc.
[0052] When the value of h3 is less than 0.3, the depth of the third skin texture is too small, and the diffusion degree of the light incident on the third skin texture is small, which is not conducive to the uniformity of the lighting of the vehicle lamp; when the value of h3 is greater than 0.5, the depth of the third skin texture is too large, which causes the light incident on the third skin texture to be excessively divergent, so that the energy of the reflected light is too low, which reduces the overall lighting brightness of the vehicle lamp, and the larger the depth of the third skin texture, the greater the processing difficulty of the third skin texture, which increases the production cost.
[0053] Similarly, when the value of h4 is less than 2, the depth of the fourth skin texture is too small, the diffusion degree of the light incident on the fourth skin texture is small, which is not conducive to the uniformity of the car light lighting; when the value of h4 is greater than 4, the depth of the fourth skin texture is too large, which causes the light incident on the fourth skin texture to be too divergent, so that the energy of the reflected light is too low, which is not conducive to the overall lighting of the car light, and the greater the depth of the fourth skin texture, the greater the processing difficulty of the fourth skin texture, which increases the production cost.
[0054] In an embodiment, the optical module further comprises a light homogenizing plate 30, which is arranged between the reflector 10 and the first light guide component 20.
[0055] By arranging the light homogenizing plate 30 between the reflector 10 and the first light guide component 20, the light incident on the first light guide component 20 can be further diffused, further improving the uniformity of the car light lighting.
[0056] It should be noted that the light homogenizing plate 30 diffuses the light while ensuring the light transmittance.
[0057] In an embodiment, the optical module further comprises a decorative ring 40, which surrounds the first light guide component 20, and the decorative ring 40 is connected to the reflector 10 through a connecting structure 50; the connecting structure 50 comprises a positioning column 51, a first positioning hole 52, a second positioning hole 53, a connecting hole 54, a connecting column 55, and a screw 56; the positioning column 51 is arranged on the surface of the decorative ring 40 facing the light homogenizing plate 30, the first positioning hole 52 is arranged on the light homogenizing plate 30, the connecting column 55, the connecting hole 54, and the second positioning hole 53 are arranged on the reflector 10; the positioning column 51 is inserted into the first positioning hole 52 and the second positioning hole 53 to limit the relative position of the decorative ring 40, the light homogenizing plate 30, and the reflector 10 in the radial direction of the positioning column 51; the screw 56 passes through the connecting hole 54 and is screwed onto the connecting column 55 to press the light homogenizing plate 30 between the decorative ring 40 and the reflector 10.
[0058] In this embodiment, the light homogenizing plate 30 and the decorative ring 40 (the first light guide component 20) are pre-positioned by the positioning column 51 cooperating with the first positioning hole 52 and the second positioning hole 53, and then the light homogenizing plate 30 is clamped between the reflector 10 and the decorative ring 40 by screwing the screw 56 onto the connecting column 55; the light homogenizing plate 30 and the decorative ring 40 can be installed on the reflector 10 in sequence, which is accurate and convenient to position and install.
[0059] During actual installation, the light homogenizing plate 30 and the decorative ring 40 are moved towards the reflector 10 until the positioning column 51 is inserted into the first positioning hole 52 and the second positioning hole 53, and the connecting hole 54 is opposite to the threaded hole on the connecting column 55 through the limitation of the positioning column 51, which facilitates the installation and connection of the screw 56 and improves the assembly efficiency.
[0060] It should be noted that the connecting structure 50 is provided with multiple groups, and through the cooperation of multiple groups of connecting structures 50, the installation of the decorative ring 40, the light uniforming plate 30 and the reflector 10 is realized, and the stability of the light uniforming plate 30 between the decorative ring 40 and the reflector 10 is ensured.
[0061] Referring to Figure 4 In an embodiment, the optical module further comprises a printed circuit board 60 and a heat dissipation plate 70, and the heat dissipation plate 70 is attached to the printed circuit board 60.
[0062] In this embodiment, through the use of the heat dissipation plate 70, the temperature of the printed circuit board 60 during use can be effectively reduced, and the service life is improved; the heat dissipation plate 70 and the printed circuit board 60 are attached to each other, avoiding occupying more space inside the vehicle lamp, and providing sufficient arrangement space for the remaining parts.
[0063] On the other hand, the present application also relates to a vehicle lamp, such as Figure 4 As shown, the vehicle lamp comprises any of the foregoing optical modules; the vehicle lamp further comprises a shell 80 and a second light guide component 90, the second light guide component 90 is configured to block the shell 80 to form a containing space, and the optical module is arranged in the containing space.
[0064] On the other hand, the present application also relates to a vehicle comprising the foregoing vehicle lamp.
[0065] By adopting the technical scheme provided in the embodiments of the present application, the first skin with small depth is arranged on the reflection sub-surface 1111, the reflection and diffusion efficiency of the reflection sub-surface 1111 is increased, the light incident on the reflection sub-surface 1111 is diffused and softened, and the uniformity of the vehicle lamp lighting is ensured; the second skin diffuses and distributes the light incident on the second skin to a large extent, avoids the occurrence of mirror reflection to cause glare and bright spots, and re-diffuses and distributes the stray light originally forming glare and bright spots, and the overall illumination intensity is enhanced.
[0066] In the various embodiments of the present application, the terms or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship. In the present application, "at least one" means one or more, and "multiple" means two or more.
[0067] It can be understood that the various numbers involved in the embodiments of the present application are only for convenient differentiation, and do not limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic.
[0068] The above describes the reflector, the optical module, the vehicle lamp and the vehicle provided by the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by using specific examples; the above embodiment description is only used for helping to understand the present application and the core idea thereof; meanwhile, for the general technical personnel in the art, the specific implementation manners and application ranges will be changed according to the idea of the present application, and the above description should not be understood as the limitation of the present application.
Claims
1. A mirror, characterized by The mirror has a reflecting cavity configured to reflect light incident to a cavity wall of the reflecting cavity to a light exit side of the mirror; the cavity wall of the reflecting cavity is divided into: a first reflecting wall surface including reflecting sub-surfaces and connecting sub-surfaces, the reflecting sub-surfaces being arranged in sequence and each having a reflecting pattern, and the connecting sub-surfaces being connected between adjacent two of the reflecting sub-surfaces; and a second reflecting wall surface surrounding the first reflecting wall surface. The reflecting sub-surfaces have a first skin pattern, and the connecting sub-surfaces and the second reflecting wall surface have a second skin pattern, the depth of the first skin pattern being less than the depth of the second skin pattern.
2. The mirror of claim 1, wherein: the depth of the first skin pattern is h1 μm, and 6 ≤ h1 ≤ 10 is satisfied; and the depth of the second skin pattern is h2 μm, and 12 ≤ h2 ≤ 20 is satisfied. The optical module further includes a first light guide component configured to receive the light emitted from the mirror.
3. An optical module characterized by comprising: The light entrance surface of the first light guide component has a third skin pattern, and the light exit surface of the first light guide component has a fourth skin pattern, the depth of the third skin pattern being less than the depth of the fourth skin pattern.
4. The optical module of claim 3, wherein: the depth of the first skin pattern is greater than the depth of the third skin pattern and the fourth skin pattern.
5. The optical module of claim 4, wherein: the depth of the third skin pattern is h3 μm, and 0.3 ≤ h3 ≤ 0.5 is satisfied; and the depth of the fourth skin pattern is h4 μm, and 2 ≤ h4 ≤ 4 is satisfied.
6. The optical module of claim 3, further comprising a light homogenizing plate disposed between the mirror and the first light guide component.
7. The optical module of claim 6, further comprising a decorative ring surrounding a periphery of the first light guide component, the decorative ring being connected to the mirror by a connecting structure. The connecting structure includes a positioning post, a first positioning hole, a second positioning hole, a connecting hole, a connecting post, and a screw; the positioning post is disposed on a surface of the decorative ring facing the light homogenizing plate, the first positioning hole is disposed on the light homogenizing plate, the connecting post, the connecting hole, and the second positioning hole are disposed on the mirror; the positioning post is inserted into the first positioning hole and the second positioning hole to define the relative positions of the decorative ring, the light homogenizing plate, and the mirror in a radial direction of the positioning post; and the screw is screwed into the connecting post through the connecting hole to press the light homogenizing plate between the decorative ring and the mirror.
8. The optical module of claim 3, further comprising a printed circuit board and a heat dissipation plate attached to the printed circuit board. The vehicle lamp further includes a housing and a second light guide component configured to block the housing to form a receiving space, and the optical module is disposed in the receiving space. The vehicle lamp includes the vehicle lamp of claim 9. 9. A vehicle lamp characterized by 10. A vehicle characterized by comprising: