Optical structure and vehicle-mounted lamp

Abstract

An optical structure and a vehicle-mounted lamp comprising the optical structure. The optical structure comprises a housing (1) and a reflecting unit (2) arranged in the housing (1), wherein the reflecting unit (2) comprises at least two reflecting surfaces (21) and a connecting portion (22) connected between two adjacent reflecting surfaces (21), and the reflectivity of the connecting portion (22) is less than that of the reflecting surfaces (21); at least part of an inner wall of the housing (1) is provided with a first light-distribution pattern (3); a light-emitting unit (4) is arranged at the end of the housing (1) away from the reflecting unit (2); and some of the light reflected by the reflecting surfaces (21) is directly emitted via the light-emitting unit (4), and some of the light is reflected by the light-emitting unit (4) and then reflected by the first light-distribution pattern (3), and is then emitted via the light-emitting unit (4), thereby improving the overall uniformity of a vehicle-mounted lamp.

Description

Optical structures and automotive lighting Technical Field

[0001] This application relates to the field of automotive lighting technology, specifically to an optical structure and automotive lighting fixture. Background Technology

[0002] With the continuous development of society, people's requirements for vehicle lighting are no longer limited to illumination functions; they also have higher requirements for the appearance and design of vehicle lighting. For the vehicle as a whole, vehicle lighting plays a more important role than ever before, greatly influencing the overall design. Therefore, the design of vehicle lighting has become a crucial aspect.

[0003] The most important optical system in the existing technology is the condenser and the reflector. There is a certain distance between the LED and the light-emitting surface. Due to space and cost limitations, the LED often cannot completely cover the light-emitting surface, resulting in uneven brightness of the light-emitting surface. Summary of the Invention

[0004] The purpose of this application is to overcome the problem of uneven brightness of the light-emitting surface of the existing vehicle lamps, and to provide an optical structure and vehicle lamps that have the advantages of improving the overall uniformity of the light-emitting surface of the vehicle lamps and improving their aesthetics.

[0005] To achieve the above objectives, on the one hand, this application provides an optical structure, including an outer shell and a reflective unit disposed within the outer shell. The reflective unit includes at least two reflective surfaces and a connecting portion connecting two adjacent reflective surfaces. The reflectivity of the connecting portion is less than the reflectivity of the reflective surfaces.

[0006] At least a portion of the inner wall of the outer casing is provided with a first light distribution pattern;

[0007] A light-emitting unit is provided at the end of the outer casing away from the reflective unit. Some of the light reflected by the reflective surface is emitted directly from the light-emitting unit, and some is reflected by the light-emitting unit and then reflected by the first light distribution pattern before being emitted from the light-emitting unit.

[0008] In some embodiments, the first light distribution pattern includes a side pattern disposed on at least a portion of the inner sidewall of the housing.

[0009] In some embodiments, the side pattern is disposed on at least a portion of the inner sidewall onto which light reflected from at least a portion of the reflective surface is incident.

[0010] In some embodiments, the side pattern is provided on at least a portion of the inner sidewall that forms an acute angle at the connection with the light-emitting unit.

[0011] In some embodiments, the side pattern includes a plurality of side pattern units, each side pattern unit including a side reflective surface, and the light reflected by the side reflective surface is adapted to be emitted by the light-emitting unit.

[0012] In some embodiments, the side pattern unit further includes a side light-shielding surface, which connects two adjacent side reflective surfaces.

[0013] In some embodiments, the side shading surface forms a first angle b with the reference surface, the angle of the first angle b is not greater than 40°, the side pattern unit is arranged along the first direction from the self-reflection unit to the light-emitting unit, and the reference surface is perpendicular to the first direction.

[0014] In some embodiments, the light-emitting unit bends toward the reflective surface from one end connected to the inner sidewall of the housing with side patterns to the other end.

[0015] In some embodiments, the light-emitting unit includes an incident surface and a light-emitting surface. The incident surface or the light-emitting surface of the light-emitting unit forms a second included angle c with the reference surface. The second included angle c gradually increases from one end of the light-emitting unit connected to the inner side wall of the housing with side patterns to the other end. The side pattern units are arranged along a first direction, and the reference surface is perpendicular to the first direction.

[0016] In some embodiments, the side reflecting surface forms a third included angle α with the reference surface, and the angle of the third included angle α gradually decreases along the first direction.

[0017] In some embodiments, the side pattern is serrated.

[0018] In some embodiments, the first light distribution pattern further includes a base pattern disposed on at least a portion of the inner bottom wall of the housing.

[0019] In some embodiments, the base pattern includes a plurality of connected base pattern units. Each base pattern unit includes a base reflective surface and a base light-shielding surface. The base light-shielding surface connects two adjacent base reflective surfaces. The base reflective surface extends from the reflective surface to the light-emitting unit. The light reflected by the base reflective surface is suitable for reaching the light-emitting unit.

[0020] In some embodiments, the base pattern is serrated.

[0021] In some embodiments, the light-emitting unit has a second light distribution pattern on its light-incident surface.

[0022] In some embodiments, the connecting part has a hollow structure.

[0023] In some embodiments, no reflective layer is provided on the connecting portion.

[0024] On the other hand, this application provides a vehicle-mounted lamp, including the aforementioned optical structure.

[0025] By installing the optical structure disclosed in this application inside the vehicle lamp, the above technical solution achieves two advantages. First, it ensures that the reflectivity of the connecting part is lower than that of the reflecting surface, avoiding uneven brightness on the light-emitting surface of the vehicle lamp caused by bright areas resulting from direct emission of light after reflection from the connecting part. Second, some of the light emitted by the light source is reflected by the mirror onto the first light distribution pattern on the inner wall of the housing, then reflected onto the light-incident surface, and finally emitted from the light-emitting surface. The light is uniformly reflected from the inner wall of the housing to the light-emitting unit through the first light distribution pattern. This achieves uniform illumination of the entire light-emitting surface of the vehicle lamp, improving its aesthetic appeal. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the optical structure in an embodiment of this application;

[0027] Figure 2 is a schematic diagram of the structure of the reflective unit in the hollowed-out state of the connecting part in an embodiment of this application;

[0028] Figure 3 is a top view of the reflective unit in the hollowed-out state in the connecting part of an embodiment of this application;

[0029] Figure 4 is a schematic diagram of the structure of the reflective unit in the embodiment of this application where the connecting part is not aluminum-plated;

[0030] Figure 5 is a top view of the reflective unit in the embodiment of this application with the connecting part not coated with aluminum;

[0031] Figure 6 is a schematic diagram of the lens unit pattern in an embodiment of this application;

[0032] Figure 7 is a schematic diagram of the optical path in an embodiment of this application;

[0033] Figure 8 is a schematic diagram of the lens unit and the side reflecting surface in an embodiment of this application;

[0034] Figure 9 is a schematic diagram of the structure of the base pattern in an embodiment of this application;

[0035] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Reflective unit; 21. Reflective surface; 22. Connecting part; 3. First light distribution pattern; 31. Side pattern; 311. Side pattern unit; 312. Side reflective surface; 313. Side light-shielding surface; 32. Bottom pattern; 321. Bottom pattern unit; 322. Bottom reflective surface; 323. Bottom light-shielding surface; 4. Light emitting unit; 41. Light-incident surface; 42. Light-emitting surface; 5. Second light distribution pattern; 6. Light source. Detailed Implementation

[0036] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0037] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0038] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application 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 application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0040] It should also be noted that, in the description of this application, unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0041] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0043] Referring to FIG1, in one aspect, this application provides an optical structure, including a housing 1 and a reflective unit 2 disposed within the housing 1. The reflective unit 2 includes at least two reflective surfaces 21 and a connecting portion 22 connecting two adjacent reflective surfaces 21. The reflectivity of the connecting portion 22 is less than the reflectivity of the reflective surfaces 21.

[0044] At least a portion of the inner wall of the outer casing 1 is provided with a first light distribution pattern 3;

[0045] A light-emitting unit 4 is provided at the end of the outer shell 1 away from the reflective unit 2. Some of the light reflected by the reflective surface 21 is emitted directly from the light-emitting unit 4, and some is reflected by the light-emitting unit 4 and then reflected by the first light distribution pattern 3 before being emitted from the light-emitting unit 4.

[0046] The exemplary optical structure disclosed in this application includes a housing 1 and a reflective unit 2 disposed within the housing 1. The housing 1 includes at least an opening corresponding to a light-emitting unit 4, a sidewall opposite to the light-emitting unit 4 for mounting the reflective unit 2, and at least one inner sidewall connecting the light-emitting unit 4 and the sidewall mounting the reflective unit 2. The housing may also include an inner bottom wall. The housing 1 may be a single piece or formed by connecting multiple parts.

[0047] The light-emitting unit 4 includes an incident surface 41 and an emitting surface 42. The incident surface 41 of the light-emitting unit 4 is opposite to the reflecting unit 2, and the emitting surface 42 of the light-emitting unit 4 is away from the incident surface 41. The light-emitting unit 4 can be a single lens or multiple lenses. This application is not limited to this, and other structures of the light-emitting unit 4 are also within the protection scope of this application.

[0048] The reflecting unit 2 can be arranged along the sidewall opposite to the light-emitting unit 4, and the light source 6 is disposed at the reflecting unit 2. The reflecting unit 2 includes a plurality of reflecting surfaces 21 and connecting portions 22. Adjacent reflecting surfaces 21 form a drop, and the connecting portions 22 connect two adjacent reflecting surfaces 21. The reflectivity of the connecting portions 22 is less than that of the reflecting surfaces 21. In some embodiments, the reflecting unit 2 can be a mirror unit independent of the housing 1, and the mirror unit is connected to the housing 1 to be disposed within the housing 1. In other embodiments, the reflecting unit 2 can be implemented by a reflective layer within the housing 1, that is, the reflecting unit 2 may not be an optical element independent of the housing 1. This application can achieve more variations, which will not be elaborated here.

[0049] For optical structures installed within vehicle lighting fixtures, when certain viewing angles correspond from the light-emitting unit 4 to portions of the optical structure without the light source 6 (such as the inner wall), these portions will form dark areas compared to the portions with the light source 6 (reflection unit 2). Excessive brightness difference between the bright and dark areas will cause uneven brightness on the light-emitting surface of the vehicle lighting fixture. Therefore, this application avoids the problem of uneven brightness on the light-emitting surface of the vehicle lighting fixture caused by bright areas resulting from the direct emission of the light source 6 after reflection from the connection part 22 by making the reflectivity of the connecting part 22 less than that of the reflecting surface 21.

[0050] Specifically, referring to Figures 2 and 3, in some embodiments, the connecting portion 22 has a hollow structure, resulting in a reflectivity of 0 for the hollow portion of the connecting portion 22, thus making the reflectivity of the connecting portion 22 less than that of the reflecting surface 21. In this embodiment, the consumables of the housing 1 or the reflecting unit 2 can be reduced, thereby reducing the overall weight of the optical structure. Referring to Figures 4 and 5, in other embodiments, no reflective layer is provided on the connecting portion 22. For example, in embodiments where the reflecting surface 21 is coated with a reflective layer, a reflective layer may not be provided on the connecting portion 22, so that the reflectivity of the connecting portion 22 is less than that of the reflecting surface 21. In some embodiments, the reflective layer can be achieved by plating aluminum on the sidewall of the housing 1. In this embodiment, the connecting portion 22 can still have a low reflectivity, so that the emitted brightness of the connecting portion 22 and the reflecting surface 21 can transition uniformly.

[0051] A first light distribution pattern 3 is provided on at least one inner wall (inner side wall and / or inner bottom wall) of the outer casing 1.

[0052] The optical structure disclosed in this application is installed inside a vehicle lamp. The light emitted by the light source 6 is reflected by the reflective surface 21 onto the light-incident surface 41. Part of the light is emitted from the light-out surface 42, and part of the light is reflected by the light-incident surface 41 and then reflected by the first light distribution pattern 3 onto the light-incident surface 41, and then emitted from the light-out surface 42. The light is uniformly reflected from the inner wall of the outer casing to the light-out unit by the first light distribution pattern.

[0053] This achieves a uniform illumination of the entire light-emitting surface of the vehicle lights, improving their aesthetic appeal.

[0054] Referring to Figures 1 and 6, in some embodiments, the first light distribution pattern 3 includes a side pattern 31 disposed on at least a portion of the inner sidewall of the housing 1.

[0055] In some embodiments, the first light distribution pattern 3 includes a side pattern 31 disposed on at least part of the inner sidewall of the housing 1. When viewed from an external side viewpoint, the side pattern 31 reflects the light reflected by the light-emitting unit 4 onto the inner sidewall again to the light-emitting unit 4, achieving a uniform overall illumination effect.

[0056] Referring to Figures 1 and 7, in some embodiments, the side pattern 31 is disposed on at least a portion of the inner sidewall illuminated by light reflected from at least a portion of the reflective surface 21.

[0057] In some embodiments, the housing 1 includes two opposing inner sidewalls, and the side pattern 31 may be provided only on the inner sidewall on the side illuminated by the light reflected from the reflective surface 21. In other embodiments, the side pattern 31 may be provided only on the area of ​​one inner sidewall illuminated by light reflected from at least part of the reflective surface 21. In other words, in this embodiment, part of the reflective surface 21 can directly reflect light onto the inner sidewall. This reduces the manufacturing cost of the housing 1.

[0058] Referring to Figures 1 and 7, in some embodiments, the side pattern 31 is provided on at least a portion of the inner sidewall that forms an acute angle at the connection with the light-emitting unit 4.

[0059] In this embodiment, the outer casing 1 includes two opposing inner sidewalls, one of which forms an acute angle with the light-emitting unit 4, and the other inner sidewall forms an obtuse angle with the light-emitting unit 4. Therefore, when viewed from the positive direction of the light-emitting unit 4, the inner sidewall forming the acute angle with the light-emitting unit 4 is more easily visible. Thus, by setting the side pattern 31 on at least a portion of the inner sidewall forming the acute angle at the connection point with the light-emitting unit 4, a more uniform lighting effect can be seen in the positive direction of the light-emitting unit 4. Furthermore, in this embodiment, the side pattern 31 is only provided on a portion of the inner sidewalls, which can reduce the processing cost of the outer casing 1.

[0060] Referring to Figures 1 and 7, in some embodiments, the side pattern 31 includes a plurality of side pattern units 311, each side pattern unit 311 including a side reflective surface 312. Light reflected by the side reflective surface 312 is suitable for reaching the light-emitting unit 4. The side reflective surface 312 can adjust the angle of the reflected light to achieve a more uniform lighting effect on the light-emitting surface 42 of the light-emitting unit 4. Furthermore, the side reflective surface 312 may also have an arch or a textured surface.

[0061] Referring to Figures 1 and 7, in some embodiments, the side pattern unit further includes a side light-shielding surface 313, which connects two adjacent side reflective surfaces 312.

[0062] In some embodiments, the side pattern 31 includes a plurality of interconnected side pattern units 311, which are arranged along a first direction (Y direction in FIG. 1) from the self-reflecting unit 2 toward the light-emitting unit 4, and the length direction of the side pattern units 311 is arranged vertically. Each side pattern unit 311 includes a side reflective surface 312 and a side light-shielding surface 313. The side reflective surface 312 faces the light-incident surface 41 of the light-emitting unit 4, and the side light-shielding surface 313 connects two adjacent side reflective surfaces 312. The side reflective surface 312 and the side light-shielding surface 313 cooperate to disperse the light irradiated onto the inner sidewall, so that the light passing through the inner sidewall can be uniformly emitted from the light-emitting unit 4.

[0063] In some embodiments, light emitted from the reflective surface 21 can be refracted at the light-incident surface 41 of the light-emitting unit 4 and enter the light-emitting unit 4. When it hits the light-emitting surface 42 of the light-emitting unit 4, it undergoes total internal reflection and is then refracted back from the light-incident surface 41 of the light-emitting unit 4 to the side reflective surface 312 of the side pattern 31. After being reflected again, it is refracted and emitted from the light-emitting unit 4, thereby achieving the effect of uniformly illuminating the light-emitting surface. Some strong light that directly hits the inner wall from the light source 6 or from the light source 6 to the reflective surface 21 and then to the inner wall can have its light path changed by the side light-shielding surface 313, blocking this part of the light so that it returns to the reflective unit 2 or cannot be emitted, thus avoiding affecting the overall lighting effect.

[0064] Referring to FIG7, in some embodiments, the side shading surface 313 forms a first included angle b with the reference surface, the angle of the first included angle b is not greater than 40°, and the reference surface is perpendicular to the first direction.

[0065] In some embodiments, the side pattern units 311 are arranged along the first direction from the self-reflection unit 2 to the light-emitting unit 4. The side light-shielding surface 313 forms a first angle b with the reference surface, the angle of the first angle b being no greater than 40°. The reference surface is the (X,Z) plane, that is, the reference surface can be a vertical plane perpendicular to the inner bottom wall of the outer shell 1 when the optical structure is in a horizontal state. During the reflection of light, a larger angle is beneficial for light emission. In order to limit the light emission of the side light-shielding surface 313, the acute angle formed between the side light-shielding surface 313 and the reference surface can be limited.

[0066] Referring to FIG8, in some embodiments, the light-emitting unit 4 bends from one end connected to the inner sidewall of the outer housing 1 provided with the side pattern 31 toward the reflective surface 21.

[0067] Referring to Figure 8, in some embodiments, the light-emitting unit 4 includes an incident surface 41 and a light-emitting surface 42. The incident surface 41 or the light-emitting surface 42 of the light-emitting unit 4 forms a second included angle c with the reference surface. The second included angle c gradually increases from one end of the light-emitting unit 4 connected to the inner sidewall of the outer shell 1 on which the side pattern 31 is provided to the other end. The side pattern units 311 are arranged along the first direction, and the reference surface is perpendicular to the first direction.

[0068] In some embodiments, to match the shape of the vehicle-mounted lamp, the light-emitting unit 4 is often designed in an arc shape, with the light-emitting unit 4 tilting inward along the X direction. That is, the light-emitting surface 42 of the light-emitting unit 4 bends towards the reflective surface 21 from one end connected to the inner sidewall of the outer housing 1 with the side pattern 31 to the other end. At this time, the light-emitting surface 42 forms a second included angle c with the reference surface, and the second included angle c gradually increases from one end of the light-emitting unit 4 connected to the inner sidewall of the outer housing 1 with the side pattern 31 to the other end.

[0069] Referring to Figure 8, in some embodiments, the side reflective surface 312 forms a third included angle α with the reference surface, and the angle of the third included angle α gradually decreases along the first direction.

[0070] In some embodiments, the side reflective surface 312 forms a third angle α with the reference surface. The angle of the third angle α gradually decreases outward along the first direction, that is, the angle of the third angle α gradually decreases along the direction from the reflective unit 2 to the light-emitting unit 4. This ensures that the light irradiated onto the inner sidewall of the side pattern 31 can be uniformly reflected to the light-emitting unit 4. For example, the end of the light-emitting unit 4 connected to the inner sidewall of the side pattern 31 is the first end, and the other end of the light-emitting unit 4 extending along the X direction is the second end. The side reflective surface 312 near the first end of the light-emitting unit 4 can irradiate the area near the first end of the light-emitting unit 4, and the side reflective surface 312 away from the first end of the light-emitting unit 4 can irradiate the area away from the light-emitting unit 4, so that the light reflected by the side pattern 31 can be uniformly emitted from the light-emitting unit 4.

[0071] Referring to Figures 6 and 7, in some embodiments, the side pattern 31 is serrated. This application is not limited to this; other pattern structures (such as grid patterns) that can realize the side reflective surface 312 and the side light-shielding surface 313 are also within the scope of protection of this application.

[0072] Referring to Figures 1 and 9, in some embodiments, the first light distribution pattern 3 further includes a base pattern 32 disposed on at least a portion of the inner bottom wall of the housing 1.

[0073] Referring to Figures 6 and 9, in some embodiments, the base pattern 32 includes a plurality of connected base pattern units 321. The base pattern unit 321 includes a base reflective surface 322 and a base light-shielding surface 323. The base light-shielding surface 323 connects two adjacent base reflective surfaces 322. The base reflective surface 322 extends from the reflective surface 21 toward the light-emitting unit 4. The light reflected by the base reflective surface 322 is suitable for reaching the light-emitting unit 4.

[0074] In some embodiments, the first light distribution pattern 3 further includes a base pattern 32 disposed on at least a portion of the inner bottom wall of the housing 1, the base pattern 32 being unconnected to the side pattern 31. The base pattern 32 includes a plurality of connected base pattern units 321, the plurality of base pattern units 321 being arranged along the X direction, that is, the plurality of base pattern units 321 being arranged along the arrangement direction of the reflective surface 21, and the length direction of the base pattern units 321 being arranged along the reflective surface 21 toward the light emitting unit 4. The base pattern unit 321 includes a bottom reflective surface 322 and a bottom light-shielding surface 323, the bottom reflective surface 322 facing the side pattern 31, and from the combined angle of the outer side and top view, the tail of the light emitting surface has higher brightness because there are light sources 6 arranged behind it. By adjusting the bottom reflective surface 322 and the bottom light-shielding surface 323, the brightness of the tail of the light emitting surface can be effectively reduced, thereby achieving a uniform lighting effect.

[0075] Referring to Figures 6 and 9, in some embodiments, the base pattern 32 is serrated. This application is not limited thereto, and other base patterns 32 such as fisheye patterns, grid patterns, other irregular patterns, or composite shapes are also within the scope of protection of this application.

[0076] Referring to Figure 7, in some embodiments, the light-emitting surface 41 of the light-emitting unit 4 is provided with a second light distribution pattern 5.

[0077] In some embodiments, the light-emitting unit 4 has a second light distribution pattern 5 on its light-incident surface 41. The second light distribution pattern 5 can adjust the incidence of light and further improve uniformity. The second light distribution pattern 5 can be wavy. This application is not limited thereto, and other second light distribution patterns 5 such as fisheye patterns, grid patterns, other irregular patterns, or composite shapes are also within the scope of protection of this application.

[0078] On the other hand, this application provides a vehicle-mounted lighting fixture, including the aforementioned optical structure. The vehicle-mounted lighting fixture of this application can be used as high beam headlights, low beam headlights, signal lights (such as daytime running lights, turn signals, position lights, etc.), fog lights, cornering lights, or other interior lights, but this application is not limited thereto.

[0079] This application also provides a vehicle-mounted lamp with the aforementioned optical structure inside, achieving a uniform lighting effect and thereby improving the overall uniformity of the vehicle-mounted lamp.

[0080] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0081] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. An optical structure, characterized in that, The device includes an outer shell (1) and a reflective unit (2) disposed within the outer shell (1). The reflective unit (2) includes at least two reflective surfaces (21) and a connecting portion (22) connecting two adjacent reflective surfaces (21). The reflectivity of the connecting portion (22) is less than that of the reflective surfaces (21). The outer shell (1) has at least a portion of its inner wall provided with a first light distribution pattern (3); The outer shell (1) is provided with a light-emitting unit (4) at one end away from the reflective unit (2). The light reflected by the reflective surface (21) is partially emitted directly from the light-emitting unit (4), and partially reflected by the light-emitting unit (4) and then reflected by the first light distribution pattern (3) before being emitted from the light-emitting unit (4).

2. The optical structure according to claim 1, characterized in that, The first light distribution pattern (3) includes a side pattern (31) disposed on at least a portion of the inner sidewall of the housing (1).

3. The optical structure according to claim 2, characterized in that, The side pattern (31) is disposed on at least a portion of the inner wall to which light reflected from at least a portion of the reflective surface (21) illuminates.

4. The optical structure according to claim 2, characterized in that, The side pattern (31) is provided on at least a portion of the inner sidewall at the connection point with the light-emitting unit (4) where an acute angle is formed.

5. The optical structure according to claim 2, characterized in that, The side pattern (31) includes a plurality of side pattern units (311), each side pattern unit (311) including a side reflective surface (312), and the light reflected by the side reflective surface (312) is suitable for being emitted by the light-emitting unit (4).

6. The optical structure according to claim 5, characterized in that, The side pattern unit also includes a side light-shielding surface (313), which connects two adjacent side reflective surfaces (312).

7. The optical structure according to claim 6, characterized in that, The side light-shielding surface (313) forms a first included angle b with the reference surface, the angle of the first included angle b is not greater than 40°, the side pattern unit (311) is arranged along a first direction from the reflection unit (2) to the light-emitting unit (4), and the reference surface is perpendicular to the first direction.

8. The optical structure according to claim 5, characterized in that, The light-emitting unit (4) bends from one end connected to the inner wall of the outer shell (1) which is provided with side patterns (31) toward the reflective surface (21).

9. The optical structure according to claim 8, characterized in that, The light-emitting unit (4) includes an incident surface (41) and an emitting surface (42). The incident surface (41) or the emitting surface (42) of the light-emitting unit (4) forms a second included angle c with the reference surface. The second included angle c gradually increases from one end of the light-emitting unit (4) connected to the inner sidewall of the outer shell (1) which is provided with side patterns (31) to the other end. The side pattern units (311) are arranged along a first direction. The reference surface is perpendicular to the first direction.

10. The optical structure according to claim 9, characterized in that, The side reflective surface (312) forms a third included angle α with the reference surface, and the angle of the third included angle α gradually decreases along the first direction.

11. The optical structure according to claim 6, characterized in that, The side pattern (31) is serrated.

12. The optical structure according to any one of claims 1-11, characterized in that, The first light distribution pattern (3) also includes a base pattern (32) disposed on at least part of the inner bottom wall of the outer casing (1).

13. The optical structure according to claim 12, characterized in that, The base pattern (32) includes a plurality of connected base pattern units (321). Each base pattern unit (321) includes a base reflective surface (322) and a base light-shielding surface (323). The base light-shielding surface (323) connects two adjacent base reflective surfaces (322). The base reflective surface (322) extends from the reflective surface (21) toward the light-emitting unit (4). The light reflected by the base reflective surface (322) is suitable for reaching the light-emitting unit (4).

14. The optical structure according to claim 13, characterized in that, The base pattern (32) is serrated.

15. The optical structure according to any one of claims 1-11, characterized in that, The light-emitting unit (4) has a second light distribution pattern (5) on its light-incident surface (41).

16. The optical structure according to any one of claims 1-11, characterized in that, The connecting part (22) has a hollow structure.

17. The optical structure according to any one of claims 1-11, characterized in that, No reflective layer is provided on the connecting part (22).

18. A vehicle-mounted lighting fixture, characterized in that, Includes the optical structure as described in any one of claims 1-17.

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