Optical device with multiple functions and vehicle lamp
By setting directional reflective light guide teeth and multiple light-emitting components on the light guide plate, the space and cost problems of light and pattern reuse in the prior art are solved, and diverse light and pattern outputs are realized in the same optical device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
- Filing Date
- 2022-11-22
- Publication Date
- 2026-07-21
AI Technical Summary
Existing technologies cannot effectively reuse different light outputs or patterns, resulting in the need for multiple optical equipment modules, which increases space and cost.
Directional reflective light guide teeth are arranged on a light guide plate according to a preset rule, combined with multiple light-emitting components and vertical light-emitting components, to achieve total reflection and graphic output from different light sources.
It enables the output and pattern display of different light sources in the same optical device, reducing space occupation and cost.
Smart Images
Figure CN115823526B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive technology, and in particular to optical devices and vehicle lights that realize multiple functions. Background Technology
[0002] Current automotive designs have led to increasingly compact headlights, and advancements in LED technology have resulted in a greater reuse of different functions within the same optical device compared to traditional headlights, in order to save space. One approach is the combination of daytime running lights and position lights in headlights, or brake lights and position lights in taillights. These typically use the same optical structure and light source, but achieve different functions depending on the LED's current output. Another approach is to use the same optical structure but different colored light sources, such as using white and yellow light sources to combine daytime running lights and turn signals in headlights.
[0003] Chinese patent CN216346031U discloses a customizable light-emitting system, including: a light source and a light guide plate, wherein the light source is located directly below the light guide plate, the light guide plate is flat, and the end of the light guide plate near the light source is the light-incident end; wherein, at least one side of the light guide plate is provided with an optical pattern structure.
[0004] Although this method allows the light guide plate to display different light-emitting patterns when the light source is lit by customizing the optical pattern structure according to customer needs, thus meeting diverse and personalized requirements, it cannot meet the needs of different application scenarios and cannot achieve different light-emitting areas and different patterns. Summary of the Invention
[0005] This application provides an optical device and vehicle light with composite functions, which solves the problem that in the prior art, when different light outputs or patterns are required, different composite optical device modules are often needed to achieve different light or pattern outputs.
[0006] This application provides an optical device with composite functions, including:
[0007] A light guide plate, wherein the upper surface of the light guide plate is provided with directional reflective light guide teeth, the directional reflective light guide teeth are used to totally reflect light from at least two designated positions out of the light guide plate, the directional reflective light guide teeth are arranged on the light guide plate according to a preset rule to form a pattern of totally reflected light, the designated positions include the edge positions of the light guide plate;
[0008] At least two light-emitting components are provided for the light guide plate to provide an incident light source at the designated location.
[0009] Preferably, in the optical device with composite functions, the directional reflective light guide teeth include a first directional reflective light guide tooth and a second directional reflective light guide tooth, and the light-emitting component includes a first light-emitting component and a second light-emitting component. The first directional reflective light guide tooth and the second directional reflective light guide tooth are arranged at intervals on the light guide plate. The first directional reflective light guide tooth performs total internal reflection on the incident light source of the first light-emitting component, and the second directional reflective light guide tooth performs total internal reflection on the incident light source of the second light-emitting component.
[0010] Preferably, in the optical device with composite functions, the optical components further include:
[0011] At least one vertical light-emitting component is provided for providing incident light perpendicular to the light guide plate.
[0012] Preferably, in the optical device with composite functions, the light guide plate is rectangular, the first light-emitting component is disposed on the upper edge of the light guide plate, and the second light-emitting component is disposed on the lower edge of the light guide plate.
[0013] Preferably, in the optical device with composite functions, the first light-emitting component includes: a first light source and a first light guide, wherein the first light guide is used to guide the light emitted by the first light source to the light guide plate;
[0014] The second light-emitting component includes a second light source and a second light guide, wherein the second light guide is used to guide the light emitted by the second light source to the light guide plate.
[0015] Preferably, in the optical device with composite functions, the vertical light-emitting component includes: a third light source and a reflector bowl, wherein the reflector bowl is used to collect and reflect the light emitted by the third light source.
[0016] Preferably, in the optical device with composite functions, the light guide plate is made of a transparent material.
[0017] Preferably, in the optical device with composite functions, the surface of the light guide plate has a pattern or texture.
[0018] Preferably, in the optical device with composite functions, the light-emitting component and the light guide plate are integrated into one unit.
[0019] This application also provides a vehicle light, including an optical device with composite functions as described above.
[0020] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:
[0021] 1. By employing directional reflective light guides that can reflect light sources at designated locations, different light sources can be output.
[0022] 2. By arranging the optical guide teeth according to a preset rule, the graphic output of total internal reflection light is achieved.
[0023] 3. Due to the staggered arrangement of multiple sets of directional reflective light guides, different graphics can be output when different light sources are used.
[0024] 4. Because a vertical light-emitting component is set at the vertical position of the light guide plate, the third light-emitting component can emit light from the light guide plate without affecting the third light-emitting component. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of a preferred optical device with composite functions according to the present invention;
[0026] Figure 2 This is a front view of a preferred optical device with composite functions according to the present invention;
[0027] Figure 3 This is a cross-sectional view of a preferred optical device with composite functions according to the present invention;
[0028] Figure 4 This is a schematic diagram illustrating the design principle of the preferred directional reflective optical guide tooth of the present invention;
[0029] Figure 5 This is a schematic diagram of the preferred arrangement of the first and second directional reflective light guide teeth in this embodiment;
[0030] Figure 6 The light pattern of the light reflected from the reflector bowl before passing through the light guide plate;
[0031] Figure 7 The light pattern of the light reflected from the reflector bowl after passing through the light guide plate;
[0032] Figure 8 This is an example pattern formed by the first light-emitting component of the present invention via the first directional reflective light guide tooth;
[0033] Figure 9 An example pattern formed by the preferred second light-emitting component of the present invention via the second directional reflective light guide teeth; and
[0034] Figure 10 This is a schematic diagram of the preferred integrated design of the light guide plate and the light guide of the present invention.
[0035] Figure label:
[0036] Light guide plate-10;
[0037] Directional Reflective Optical Guide Teeth-11
[0038] First directional reflective optical guide tooth - 111;
[0039] Second directional reflective optical guide tooth - 112;
[0040] First light-emitting component-21;
[0041] First Light Source-211;
[0042] First Optical Guide-212
[0043] Second light-emitting component-22;
[0044] Second Light Source-221;
[0045] Second optical guide-222;
[0046] Vertical light-emitting component-23;
[0047] Third Light Source-231; and
[0048] Reflector bowl-232. Detailed Implementation
[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The described embodiments are some embodiments of this application, but not all embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0050] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.
[0051] Existing multi-functional optical devices for automotive lights only change the light source input. However, to achieve different light outputs or patterns, different multi-functional optical device modules are often required. This application provides a multi-functional optical device and automotive light that achieves optical outputs with different light-emitting areas and patterns, significantly reducing the space utilization and cost of automotive lights.
[0052] Figure 1 This is a schematic diagram of a preferred optical device with composite functions according to the present invention. Figure 2 This is a front view of a preferred optical device with composite functions according to the present invention. Figure 3 This is a cross-sectional view of a preferred optical device with composite functions according to the present invention. For example... Figures 1-3 As shown, an optical device with multiple functions includes: a light guide plate 10, on the upper surface of which is provided with directional reflective light guide teeth 11, which are used to reflect light from a designated position out of the light guide plate 10, the designated position including the edge position of the light guide plate 10; and at least two light-emitting components, which are used to provide incident light sources at designated positions for the light guide plate 10.
[0053] Specifically, the directional reflective light guide teeth 11 are arranged on the light-reflecting plate according to a preset rule to form a pattern of total internal reflection light.
[0054] Preferably, the optical components include a first light-emitting component 21 and a second light-emitting component 22. In this embodiment, the light guide plate 10 is preferably rectangular. It is worth noting that the light guide plate 10 can also be other shapes, as long as it satisfies the requirement that the optical components direct light into a designated position on the light guide plate 10. The first light-emitting component 21 is disposed at the upper edge of the light guide plate 10, and the second light-emitting component 22 is disposed at the lower edge of the light guide plate 10.
[0055] Preferably, in this embodiment, the directional reflective light guide teeth 11 include a first directional reflective light guide tooth 111 and a second directional reflective light guide tooth 112, which are spaced apart on the light guide plate 10 to perform total internal reflection of the incident light source. In this embodiment, the incident light source is the incident light from the first light-emitting component 21 and the second light-emitting component 22. The first directional reflective light guide tooth 111 performs total internal reflection of the incident light source from the first light-emitting component 21, and the second directional reflective light guide tooth 112 performs total internal reflection of the incident light source from the second light-emitting component 22.
[0056] More specifically, the first light-emitting component 21 includes a first light source 211 and a first light guide 212. The second light-emitting component 22 includes a second light source 221 and a second light source 222. The first light guide 212 and the second light source 222 guide the incident light from the first and second light sources 221 into the first directional reflection light guide teeth 111 and the second directional reflection light guide teeth 112 of the light guide plate 10. Preferably, the first light guide 212 and the second light source 222 are provided with light guide teeth. Preferably, the first light guide 212 and the second light source 222 are made of transparent material.
[0057] Figure 4 This is a schematic diagram illustrating the design principle of the preferred directional reflective light guide tooth 11 of the present invention. Preferably, the first directional reflective light guide tooth 111 and the second directional reflective light guide tooth 112 in this embodiment are designed based on the incident light angles of the first light-emitting component 21 and the second light-emitting component 22. For example... Figure 4 As shown, the first directional reflective light guide tooth 111 (in) Figure 4 (Identified by solid lines) The design is for the first light-emitting component 21 (direction 1), with an angle α to the light guide direction. The design angle α must ensure total internal reflection of the first light-emitting component 21, while total internal reflection will not occur when light is hit from the second light-emitting component 22 onto the first reflective surface. Similarly, the second directional reflective light guide tooth 112 (in...) Figure 4 (The dotted line in the middle indicates that the design is for the second light-emitting component 22 (direction 2), which is designed at an angle of β with the light guide direction. Since the design concept is the same as that of the first reflective light guide tooth, it will not be described in detail. Figure 5 This is a schematic diagram showing the preferred arrangement of the first and second directional reflective light guide teeth 112 in this embodiment. Figure 5 As shown, the first and second directional reflective light guide teeth 112 are arranged at intervals, which can realize total internal reflection of the light emitted by the first light-emitting component 21 and the second light-emitting component 22, thereby illuminating different areas in two directions.
[0058] Preferably, the light-emitting surface of the light guide plate 10 can be textured or patterned to increase the overall uniformity of the pattern. In this embodiment, a transparent material is preferably used for the light guide, but materials containing light-dispersing particles or other colored materials can also be used to meet different functional requirements.
[0059] To fulfill functions such as vehicle auxiliary high beams, the optical device of the present invention, which has multiple functions, may further include: at least one vertical light-emitting component 23, which is disposed on one side of the light guide plate 10. The vertical light-emitting component 23 is used to provide incident light perpendicular to the light guide plate 10. Preferably, the vertical light guide component includes a third light source 231 and a reflector bowl 232, which is used to collect and reflect the light emitted by the third light source 231. Since the directional reflective light guide teeth 11 provided on the light guide plate 10 have a small area, the proportion of light deflection to the reflector bowl 232 is small and the deflection angle is small. Figure 6 The light pattern of the light reflected from the reflector bowl before passing through the light guide plate 10. Figure 7 This shows the light pattern after the light reflected from the reflector bowl passes through the light guide plate 10. For example... Figure 6 and Figure 7 As shown in the comparison, the directional reflective light guide teeth 11 arranged at intervals on the light guide plate 10 with different reflection directions have virtually no impact on the light emitted by the third light-emitting component. Therefore, the present invention can simultaneously achieve the composite functions of reflecting light through the reflector bowl 232 and displaying different patterns in the same light-emitting area. The reflector bowl 232 can also be applied to position lights on vehicles. If the reflector bowl 232 has more stringent requirements, the impact of the directional reflective light guide teeth 11 on the function of the reflector bowl can be reduced by decreasing the area or the density of their arrangement.
[0060] Figure 8 This is an example pattern formed by the first light-emitting component of the present invention via the first directional reflective light guide tooth 111. For example... Figure 8 As shown, the first light source enters the light guide plate 10 after being uniformly reflected by the first light guide 212 and the light guide teeth set on the side of the first light guide 212, and is emitted through the first directional reflective light guide teeth 111. Among them, the 8 black pixels in the figure are the light-emitting parts. Figure 9 This is an example pattern formed by the second light-emitting component of the present invention via the second directional reflective light guide tooth 112. For example... Figure 9 As shown, the second light source 221, after being homogenized by the second light source 222 and subjected to total internal reflection by the light guide teeth disposed on the side of the second light source 222, enters the light guide plate 10 and is emitted out through the second directional reflective light guide teeth 112. Wherein, Figure 9 The black pixels in the middle are the light-emitting points, and the second anti-phase light guide teeth are arranged according to a preset rule to form a pattern of total internal reflection.
[0061] Figure 10 This is a schematic diagram of a preferred integrated design of the light guide plate and light guide of the present invention. Figure 10 As shown, the light-emitting component and the light guide plate 10 are integrated into one piece. Preferably, unlike the above embodiment, the light guide plate 10, the first light-emitting component 21 and the second light-emitting component 22 are integrated into an integrated plate to increase the integration of the mold. The integrated plate is provided with light guide teeth at the top and bottom that can totally reflect light, reflecting the light to the directional reflection light guide teeth 11.
[0062] The present invention also provides a vehicle lamp, including an optical device with composite functions as described above.
[0063] The above description of the embodiments is provided to enable those skilled in the art to understand and use this application. Those skilled in the art will readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative effort. For example, the light guide can be replaced by a light source array. Furthermore, in practical applications, light sources can be added to four faces respectively, or the light guide can be made into a polygonal shape to achieve more pattern possibilities. The corresponding function of the reflector bowl 232 can also be replaced by other lighting or signal light optical schemes. Therefore, this application is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of this application without departing from the scope of this application should be within the protection scope of this application.
Claims
1. An optical device with multiple functions, comprising: A light guide plate, wherein the upper surface of the light guide plate is provided with directional reflective light guide teeth, the directional reflective light guide teeth are used to totally reflect light from at least two designated positions out of the light guide plate, the directional reflective light guide teeth are arranged on the light guide plate according to a preset rule to form a pattern of totally reflected light, and the designated positions are the edge positions of the light guide plate; At least two light-emitting components are provided for the light guide plate to provide an incident light source at the designated position; The directional reflective light guide teeth include a first directional reflective light guide tooth and a second directional reflective light guide tooth, and the light-emitting component includes a first light-emitting component and a second light-emitting component. The first directional reflective light guide teeth and the second directional reflective light guide teeth are arranged at intervals on the light guide plate. The first directional reflective light guide teeth perform total internal reflection on the incident light source of the first light-emitting component, and the second directional reflective light guide teeth perform total internal reflection on the incident light source of the second light-emitting component. The light guide plate is rectangular, the first light-emitting component is disposed on the upper edge of the light guide plate, and the second light-emitting component is disposed on the lower edge of the light guide plate; The first light-emitting component includes: a first light source and a first light guide, wherein the first light guide is used to guide the light emitted by the first light source to the light guide plate; The second light-emitting component includes: a second light source and a second light guide, wherein the second light guide is used to guide the light emitted by the second light source to the light guide plate; The vertical light-emitting component includes: a third light source and a reflector bowl, wherein the reflector bowl is used to collect and reflect the light emitted by the third light source; The first directional reflective light guide tooth is designed based on the incident light angle of the first light-emitting component and forms an angle α with the light guide direction. The design angle α satisfies the requirement of total internal reflection of the first light-emitting component, while no total internal reflection will occur when the light is hit from the second light-emitting component to the first reflective surface. The second directional reflective light guide tooth is designed based on the incident light angle of the second light-emitting component and forms an angle β with the light guide direction. The first and second directional reflective light guide teeth are arranged at intervals to perform total internal reflection of the light emitted by the first and second light-emitting components, so that different areas are illuminated in two directions; the directional reflective light guide teeth with different reflection directions arranged at intervals on the light guide plate do not affect the light emitted by the third light-emitting component, so as to realize the composite function of reflecting light through the reflector bowl and displaying different patterns in the same light-emitting area.
2. The optical device with composite functions according to claim 1, characterized in that: The vertical light-emitting component is used to provide incident light perpendicular to the light guide plate.
3. The optical device with composite functions according to claim 1, characterized in that, The light guide plate is made of a transparent material.
4. The optical device with composite functions according to claim 1, characterized in that, The surface of the light guide plate has a pattern or texture.
5. The optical device with composite functions according to claim 1, characterized in that, The light-emitting component is integrated with the light guide plate.
6. A vehicle light, characterized in that, Includes optical devices with composite functions as described in any one of claims 1 to 5.