Optical system, vehicle lamp and vehicle

Abstract

The utility model provides a kind of optical system, vehicle light and vehicle, involve vehicle technical field.The utility model provides a kind of optical system, vehicle light and vehicle, by additionally providing extension reflecting surface on reflection member, improve the utilization of light, extension reflecting surface will part of light be reflected to the edge position of light guide piece, the light compensation of dark area position of light guide piece is carried out, avoid forming dark area at the edge position of light guide piece, so that when observing from outside, light guide piece overall brightness is uniform, and optical system and vehicle light lighting effect is good, and the degree of aesthetic feeling is high.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to an optical system, a vehicle lamp, and a vehicle. Background Technology

[0002] With the rapid development of automotive lighting technology, vehicle users have increasingly higher requirements for the uniformity of headlight illumination. Existing automotive lighting optical systems contain a light source, a reflector, and a thick wall. The reflector is located between the light source and the thick wall. The light emitted by the light source is reflected by the reflector to the thick wall and then emitted from the thick wall.

[0003] However, when the light emitted from the light source is reflected by the reflector to the thick wall, due to the gap between the reflector and the thick wall, some light cannot reach the edge of the light-receiving surface of the thick wall. This reduces the brightness at the edge of the thick wall, resulting in uneven illumination of the thick wall. Ultimately, this leads to uneven brightness of the headlights when viewed from the outside, affecting their aesthetics. Utility Model Content

[0004] The purpose of this invention is to provide an optical system, a vehicle lamp, and a vehicle that can compensate for light in the dark areas of a light guide, thereby making the overall brightness of the light guide uniform.

[0005] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides an optical system, including a light source and a reflector and a light guide arranged sequentially along the light path. The light emitted from the light source is reflected by the reflector to the light-incident surface of the light guide and enters the light guide, and then exits after passing through the light-out surface of the light guide. The reflector has a reflective surface and an extended reflective surface disposed toward the light guide, the extended reflective surface extending to the edge of the light incident surface to reflect a portion of the light to the edge of the light incident surface.

[0006] In an optional embodiment, the reflective surface includes a plurality of reflective sidewalls, with adjacent reflective sidewalls connected to form steps, so that the light is reflected by the plurality of reflective sidewalls to the light guide and exits from the light guide.

[0007] In an optional embodiment, in the light-emitting direction of the light guide, the projection of the light-emitting surface is located within the projection of the light-incident surface.

[0008] In an optional embodiment, the light guide includes a light guide body and at least one flange, the light incident surface and the light emitting surface are disposed on opposite sides of the light guide body, and the flange extends from the side of the light guide body closer to the reflector.

[0009] In an optional embodiment, the upper sidewall of the light guide body is the upper surface, the lower sidewall of the light guide body is the lower surface, and the upper surface and the lower surface are arranged in parallel.

[0010] In an optional embodiment, a draft angle is provided at the junction of the light-incident surface and the flange, the draft angle being used to deflect the light to be blocked by the decorative panel and / or into the light guide body.

[0011] In an optional embodiment, the light guide body forms a recessed structure at the light incident surface, and the junction of the light incident surface and the flange forms an inclined surface, which is located at the draft angle.

[0012] Secondly, this utility model provides a vehicle lamp, including the optical system described in any of the foregoing embodiments.

[0013] In an alternative embodiment, the headlight includes a bracket, and the optical system is mounted on the bracket.

[0014] Thirdly, this utility model provides a vehicle including the headlights described in any of the foregoing embodiments.

[0015] The beneficial effects of the optical system, vehicle lights, and vehicle provided by this embodiment of the invention include: By adding an extended reflective surface to the reflector, the utilization rate of light is improved. The extended reflective surface reflects a portion of the light to the edge of the light guide, compensating for the dark areas of the light guide and preventing the formation of dark areas at the edges of the light guide. This results in uniform overall brightness of the light guide when viewed from the outside, as well as good lighting effect of the optical system and vehicle lights, and high aesthetic appeal. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the vehicle light provided in this embodiment; Figure 2 This is a schematic diagram of the optical system provided in this embodiment; Figure 3 This is a schematic diagram of the optical path of the optical system provided in this embodiment; Figure 4 This is a schematic diagram of the optical path for light transmission within the light guide provided in this embodiment; Figure 5 This is a schematic diagram illustrating the propagation of light at the draft angle of the light guide in this embodiment. Figure 6 This is a schematic diagram of the reflective surface provided in this embodiment; Figure 7 A schematic diagram of the optical path for reflecting light from a reflective surface on a mirror in the prior art; Figure 8 This is a schematic diagram of the optical path for the reflective surface to reflect light, as provided in this embodiment.

[0018] Icons: 10-Headlight; 11-Bracket; 12-Trimmed panel; 100-Optical system; 110-Light guide; 111-Light guide body; 112-First flange; 113-Second flange; 114-Light incident surface; 115-Light exit surface; 116-Draft angle; 120-Reflector; 121-Reflective surface; 1211-Reflective sidewall; 1212-Step; 122-Extended reflective surface; 130-Light source. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they 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.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] The following describes in detail the overall structure, working principle, and technical effects of the optical system 100, vehicle lamp 10, and vehicle provided by this utility model through embodiments and in conjunction with the accompanying drawings.

[0026] Please refer to Figures 2-3 The first aspect of this utility model proposes an optical system 100, including a light source 130 and a reflector 120 and a light guide 110 arranged sequentially along the optical path. The light emitted from the light source 130 is reflected by the reflector 120 to the light incident surface 114 of the light guide 110 and enters the light guide 110, and then exits through the light exit surface 115 of the light guide 110. The reflector 120 has a reflective surface 121 and an extended reflective surface 122 disposed toward the light guide 110. The extended reflective surface 122 extends to the edge of the light incident surface 114 to reflect part of the light to the edge of the light incident surface 114.

[0027] It is understandable that the reflective surface 121 of the reflector 120 reflects light onto the light guide 110, and the light guide 110 guides the light out. The extended reflective surface 122 reflects a portion of the light to the edge of the incident surface 114, improving the light utilization rate. At the same time, the portion of light reflected by the extended reflective surface 122 can illuminate the edge of the light guide 110 and emit it outward, so that when the optical system 100 is observed from the outside, the light guide 110 has uniform brightness and high aesthetic appeal.

[0028] As described above, this application adds an extended reflective surface 122 to the reflector 120, which allows a portion of the light to be reflected to the edge of the light-incident surface 114 of the light guide 110, thereby improving the light utilization rate, compensating for the dark areas of the light guide 110, avoiding the formation of dark areas at the edges of the light guide 110, and making the overall brightness of the light guide 110 uniform, thus enhancing the aesthetics of the headlight 10 when it is lit.

[0029] In this embodiment, the optical system 100 includes a light guide 110. The light guide 110 can be a thick-walled component, a light guide plate, or other light-guiding structure that guides light.

[0030] In some embodiments, the light guide 110 includes a light guide body 111 and at least one flange, with an incident light surface 114 and an exit light surface 115 disposed on opposite sides of the light guide body 111. The flange extends from the side of the light guide body 111 near the reflector 120. Furthermore, the flange is connected to the edge of the incident light surface 114 of the light guide 110.

[0031] Alternatively, please refer to Figures 2-4 The light guide 110 includes a light guide body 111 and two flanges, namely a first flange 112 and a second flange 113. A light-incident surface 114 and a light-exit surface 115 are located on opposite sides of the light guide body 111. The first flange 112 extends from the upper part of the light guide body 111 near the light-incident surface 114, and is connected to the upper edge of the light-incident surface 114. The second flange 113 extends from the lower part of the light guide body 111 near the light-incident surface 114, and is connected to the lower edge of the light-incident surface 114. The first flange 112 and the second flange 113 are used for positioning and connection with the trim panel 12 of the headlight 10.

[0032] Furthermore, the light guide body 111, the first flange 112, and the second flange 113 are formed as a single piece. Specifically, the single piece can be a single structure formed by injection molding or other methods. Setting the light guide body 111 and the flange as a single piece can improve the overall bending and torsional stiffness of the light guide 110 and prevent the light guide 110 from deforming due to internal stress or external load, thereby affecting its optical performance.

[0033] It is understandable that by extending the first flange 112 and the second flange 113 above and below the light guide body 111 respectively, on the one hand, the first flange 112 and the second flange 113 can block some stray light or change the deflection direction of the light so that some light enters the light guide body 111, thereby reducing glare or light pollution and improving light utilization. On the other hand, the first flange 112 and the second flange 113 can also be configured to be installed and fixed with other structures to ensure that the light guide 110 is accurately positioned during assembly, reduce installation tolerances, and avoid optical path deviation.

[0034] Optionally, the light-incident surface 114 of the light guide 110 can be a smooth surface or have a pattern of one or more of the following: leather texture, fisheye pattern, stripe, or a combination of two, in order to achieve uniform light.

[0035] Optionally, the light-emitting surface 115 of the light guide 110 can be a smooth surface or have a pattern of one or more of the following: leather texture, fisheye pattern, stripe, etc., in order to achieve uniform light.

[0036] Alternatively, please refer to Figures 3-4The upper sidewall of the light guide body 111 is the upper surface, and the lower sidewall of the light guide body 111 is the lower surface. The upper and lower surfaces are arranged in parallel.

[0037] Understandably, please refer to Figure 4 The light reflected by the reflective surface 121 enters the light guide 110 from the light incident surface 114. Some of the light undergoes total internal reflection between the upper and lower surfaces of the light guide body 111 and then exits from the light exiting surface 115. Because the upper and lower surfaces of the light guide body 111 are parallel, non-parallel light can undergo total internal reflection between the upper and lower surfaces and finally exit from the light exiting surface 115. Setting the upper and lower surfaces of the light guide body 111 to be parallel improves light utilization and reduces the non-uniformity of light distribution.

[0038] Alternatively, please refer to Figures 2-3 In the light-emitting direction of the light guide 110, the projection of the light-emitting surface 115 is located within the projection of the light-incident surface 114. This makes the area of ​​the light-incident surface 114 larger than the area of ​​the light-emitting surface 115, allowing as much light as possible to enter the light guide body 111 and improving light utilization.

[0039] Please refer to Figure 5 In this embodiment, a draft angle 116 is provided at the junction of the light-incident surface 114 and the flange. The draft angle 116 is used to deflect the light to be blocked by the decorative panel 12 and / or into the light guide body 111. For example, the junction of the light-incident surface 114 and the first flange 112 and the junction of the light-incident surface 114 and the second flange 113 are both provided with a draft angle 116.

[0040] Optionally, the light guide body 111 forms a recessed structure at the light incident surface 114, so that the junction of the light incident surface 114 and the flange forms an inclined surface, and the inclined surface is located at the draft angle 116. For example, the junctions of the light incident surface 114 and the first flange 112 and the light incident surface 114 and the second flange 113 form inclined surfaces.

[0041] Understandably, please refer to Figure 5 By setting the draft angle 116, when light is reflected to the light-incident surface 114, some of the light will be deflected after passing the inclined surface at the draft angle 116. The deflected light is deflected into the trim panel 12 and blocked by the trim panel 12, thereby avoiding lighting defects caused by light leakage between the trim panel 12 and the light guide 110. The other part of the deflected light can continue to be transmitted in the light guide body 111 and finally exit from the light-exiting surface 115.

[0042] In this embodiment, the optical system 100 includes a reflector 120. Please refer to... Figures 2-3The reflector 120 has a reflective surface 121 and an extended reflective surface 122 disposed toward the light guide 110. The extended reflective surface 122 extends to the edge of the light incident surface 114 to reflect part of the light to the edge of the light incident surface 114.

[0043] It is understandable that the reflective surface 121 of the reflector 120 reflects light onto the light guide 110, and the light guide 110 guides the light out. The extended reflective surface 122 reflects a portion of the light to the edge of the light-incident surface 114 of the light guide 110. On the one hand, this improves the light utilization rate, and on the other hand, the light reflected by the extended reflective surface 122 can illuminate the edge of the light guide 110 and shine outward, so that when the optical system 100 is observed from the outside, the light guide 110 has uniform brightness and high aesthetic appeal.

[0044] Alternatively, please refer to Figure 3 The reflective surface 121 and the extended reflective surface 122 are disposed on the inner wall of the reflective element 120, which is a single piece. It is understood that making the reflective element 120 a single piece reduces the number of parts and improves the positioning accuracy between components. Of course, in other embodiments, the reflective surface 121 and the extended reflective surface 122 can also be disposed on different reflective elements 120, and the different reflective elements 120 can be connected through a connecting structure.

[0045] Please refer to Figure 7 , Figure 7 This diagram illustrates the optical path of a reflective surface on a mirror in the prior art, where light is reflected. In the prior art, one reflective surface corresponds to one light guide, with multiple light guides corresponding to multiple reflective surfaces, and a significant step is formed between adjacent reflective surfaces. Because each light guide corresponds to one reflective surface, the reflective surface has weak light diffusion capabilities. Furthermore, the significant step reflects light in other directions, rather than the light output direction of the optical system, resulting in a defect in the optical system's output effect: a clear separation between bright and dark areas.

[0046] Therefore, in this embodiment, please refer to Figure 6 and Figure 8 The reflective surface 121 includes a plurality of reflective sidewalls 1211, and adjacent reflective sidewalls 1211 are connected to form a step 1212 so that light is reflected by the plurality of reflective sidewalls 1211 to the light guide 110 and emitted from the light guide 110.

[0047] Understandably, please refer to Figure 8 , Figure 8This is a schematic diagram of the optical path through which the reflective surface 121 reflects light in this application. In this application, the reflective surface 121 is laterally divided into multiple small reflective sidewalls 1211, with small steps 1212 formed between adjacent reflective sidewalls 1211. The height of the steps 1212 is much smaller than the height of larger steps in the prior art. Therefore, because the reflective surface 121 is divided into multiple small reflective sidewalls 1211, the steps 1212 formed by the multiple small reflective sidewalls 1211 are extremely small, enhancing the reflective effect of the reflective surface 121 on light. More light can then exit towards the light guide 110, improving the defect of obvious bright and dark area intervals in the optical system 100.

[0048] For example, please refer to Figures 2-3 An extended reflective surface 122 is disposed at the bottom of the reflective surface 121, and the extended reflective surface 122 extends from the junction with the reflective surface 121 to the junction of the light guide body 111 and the second flange 113.

[0049] Understandably, the extended reflective surface 122 extends from the junction with the reflective surface 121 to the junction with the light guide body 111 and the second flange 113. On the one hand, the extended reflective surface 122, being close to the light guide 110, can reflect a portion of the light to the edge of the light incident surface 114, thus improving the light utilization rate. On the other hand, the extended reflective surface 122 can also block light leakage towards non-target areas, avoiding glare or light pollution caused by stray light. For example, when the light source 130 is located above the extended reflective surface 122, the extended reflective surface 122 can block light leakage towards the lower part of the optical system 100. Alternatively, when the light source 130 is located below the extended reflective surface 122, the extended reflective surface 122 can also block light leakage towards the upper part of the optical system 100.

[0050] Please refer to Figures 1-2 The second aspect of this utility model provides a vehicle light 10, including the aforementioned optical system 100 and a bracket 11, with the optical system 100 mounted on the bracket 11. The vehicle light 10 can be a combination of any one or more functions selected from daytime running lights, brake lights, position lights, reversing lights, turn signals, and ADS lights.

[0051] In this embodiment, please refer to Figures 2-3 The reflective surface 121 and the extended reflective surface 122 are disposed on the reflective element 120, and the reflective element 120 is integrally formed on the bracket 11, which reduces the number of parts and improves the positioning accuracy between parts and the overall positioning accuracy of the headlight 10.

[0052] The reflective surface 121 and the extended reflective surface 122 can be aluminized and installed on the inner wall of the bracket 11.

[0053] Of course, in other embodiments, the reflector 120 and the bracket 11 can also be separate components, which can be assembled through a connecting structure.

[0054] In this embodiment, the headlight 10 further includes at least one trim panel 12, which is disposed near or close to at least one sidewall of the light guide body 111 to block light emitted from the sidewall and flange of the light guide body 111 and prevent stray light from forming. Wherein, "near or close to at least one sidewall of the light guide body 111" means that the distance between the trim panel 12 and the sidewall of the light guide body 111 is less than or equal to 10 mm. For example, please refer to... Figures 2-3 There are two decorative panels 12. One decorative panel 12 is located above the upper side wall of the light guide body 111 and is connected to the first flange 112. The other decorative panel 12 is located below the lower side wall of the light guide body 111 and is connected to the second flange 113. The two decorative panels 12 are also fixedly connected to the bracket 11.

[0055] A third aspect of this utility model also proposes a vehicle, which includes a vehicle body and a headlight 10 disposed on the vehicle body.

[0056] In summary, the optical system 100, vehicle lamp 10, and vehicle provided in this embodiment of the present invention improve light utilization by adding an extended reflective surface 122 to the reflector 120. The extended reflective surface 122 extends to the edge of the light-incident surface 114, and the extended reflective surface 122 reflects a portion of the light to the edge of the light-incident surface 114. At the same time, this portion of the light can illuminate the edge of the light guide 110 and emit it outward, so that when viewed from the outside, the overall brightness of the light guide 110 is uniform, and the optical system 100 and vehicle lamp 10 have good lighting effects and high aesthetics.

[0057] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An optical system, characterized in that, It includes a light source and a reflector and a light guide arranged sequentially along the light path. The light emitted from the light source is reflected by the reflector to the light-incident surface of the light guide and enters the light guide, and then exits after passing through the light-out surface of the light guide. The reflector has a reflective surface and an extended reflective surface disposed toward the light guide, the extended reflective surface extending to the edge of the light incident surface to reflect a portion of the light to the edge of the light incident surface.

2. The optical system according to claim 1, characterized in that, The reflective surface includes multiple reflective sidewalls, and adjacent reflective sidewalls are connected to form steps, so that the light is reflected by the multiple reflective sidewalls to the light guide and exits from the light guide.

3. The optical system according to claim 1, characterized in that, In the light-emitting direction of the light guide, the projection of the light-emitting surface is located within the projection of the light-incident surface.

4. The optical system according to claim 1, characterized in that, The light guide includes a light guide body and at least one flange. The light incident surface and the light emitting surface are disposed on opposite sides of the light guide body. The flange extends from the side of the light guide body closest to the reflector.

5. The optical system according to claim 4, characterized in that, The upper sidewall of the light guide body is the upper surface, and the lower sidewall of the light guide body is the lower surface. The upper surface and the lower surface are arranged in parallel.

6. The optical system according to claim 4, characterized in that, The junction between the light-incident surface and the flange is provided with a draft angle, which is used to deflect the light to be blocked by the decorative panel and / or into the light guide body.

7. The optical system according to claim 6, characterized in that, The light guide body forms a recessed structure at the light incident surface, and the junction of the light incident surface and the flange forms an inclined surface, which is located at the draft angle.

8. A vehicle light, characterized in that, Includes the optical system according to any one of claims 1-7.

9. The vehicle light according to claim 8, characterized in that, The vehicle headlight includes a bracket, and the optical system is mounted on the bracket.

10. A vehicle, characterized in that, Includes the vehicle lights as described in any one of claims 8-9.

Images