Multi-light-color multiplexing light guide body

Abstract

The utility model relates to the technical field of car lamps, in particular to a multi-light-color multiplexing light guide body, which comprises a plurality of light sources, a light guide plate, a light guide plate and a light guide plate, the plurality of light guide body main bodies are in one-to-one correspondence with the light sources, and reflecting surfaces are arranged on the light guide body main bodies; the light filtering part is arranged on one of the reflecting surfaces and is used for allowing light rays with specific single colors to pass through; and the light emitting surface is used for emitting the light reflected by the plurality of reflecting surfaces. According to the multi-light-color multiplexing light guide body, multiple light rays are reflected to the light emitting surface through the multiple reflecting surfaces, specific light rays pass through the light filtering piece, light rays of other colors are reflected, and then light with the needed light color is obtained by mixing light rays of different colors according to the three-primary-color principle of light. The problem that light sources with different colors are out of focus due to the fact that signal lamps with different functions share a light-emitting surface is solved, and the overall lighting effect of the optical system is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a multi-color multiplex light guide. Background Technology

[0002] Most existing multifunctional light guides place two LEDs at the focal point, and the light-emitting centers of these two LEDs are completely off-center from the light-emitting focal point of the optical system.

[0003] This shortcoming leads to a reduction in the overall light efficiency of the optical system, and defocusing causes the light pattern of the signal lights to shift on the regulatory screen, making the regulations more likely to fail. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the technical problem that different color light sources are out of focus due to the sharing of the light-emitting surface by signal lights with different functions, this utility model provides a multi-color multiplex light guide.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a multi-color multiplexed light guide, including multiple light sources, each of which emits light of a different color; multiple light guide bodies, each corresponding to a light source, and the light guide bodies have reflective surfaces; a filter element, disposed on one of the reflective surfaces, for allowing specific monochromatic light to pass through; and a light-emitting surface, for emitting light reflected from the multiple reflective surfaces.

[0006] This invention relates to a multi-color multiplexed light guide that reflects multiple types of light to the light-emitting surface through multiple reflective surfaces, while a filter allows specific light to pass through and reflects other colors of light. By using the principle of the three primary colors of light, different colors of light are mixed to obtain the desired light color. This solves the problem of different color light sources being out of focus due to different function signal lights sharing the same light-emitting surface, thus improving the overall light efficiency of the optical system.

[0007] Furthermore, the filter element is a filter film.

[0008] Furthermore, there are two light sources, two light guide bodies, and the filter is located between the two light guide bodies.

[0009] Furthermore, adjacent light guide bodies are joined together.

[0010] Furthermore, the light source farther from the light-emitting surface emits light of one of the three primary colors, while the light source closer to the light-emitting surface emits light of the other two primary colors.

[0011] Furthermore, the light source near the light-emitting surface emits a mixture of two other colors of light from the three primary colors.

[0012] Furthermore, the color of the light that the filter can pass through is the same as the color of the light emitted by the light source that is far from the light-emitting surface.

[0013] Furthermore, the light source farther away from the light-emitting surface emits blue light, while the light source closer to the light-emitting surface emits red and green light or a mixture of red and green light.

[0014] Furthermore, light sources farther from the light-emitting surface emit green light, while light sources closer to the light-emitting surface emit red light.

[0015] Furthermore, the luminous flux of the light source can be adjusted according to requirements.

[0016] The beneficial effects of this utility model are:

[0017] 1. Multiple reflective surfaces reflect various types of light to the light-emitting surface, while the filter allows specific light to pass through and reflects other colors of light. Then, by using the principle of the three primary colors of light, different colors of light are mixed to obtain the light of the desired color, which solves the problem of different color light sources being out of focus due to the sharing of the light-emitting surface by signal lights with different functions. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram illustrating the overall structure of a multi-color multiplex light guide in this utility model.

[0020] In the diagram: 1. Light guide body; 11. Reflective surface; 2. Light source; 3. Filter; 4. Light emitting surface. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] This utility model discloses a multi-color multiplexed light guide.

[0024] Reference Figure 1 A multi-color light guide includes a light source 2 and a light guide body 1. Multiple light sources 2 and multiple light guide bodies 1 are provided, and they correspond one-to-one. In this embodiment, two light sources 2 and two light guide bodies 1 are provided. Each light source 2 emits light of a different color. The light guide body 1 has a reflective surface 11. Two light guide bodies 1 are joined together, and a filter 3 is provided between the two light guide bodies 1. The filter 3 can be a filter film, attached to the reflective surface 11, for allowing specific monochromatic light to pass through. One of the light guide bodies 1 has a light-emitting surface 4, which is used to emit light reflected from the multiple reflective surfaces 11. During operation, multiple reflective surfaces 11 reflect various types of light to the light-emitting surface 4, while the filter 3 allows specific light to pass through and reflects other colors of light. Based on the principle of the three primary colors of light, different colors of light are mixed to obtain the desired light color, solving the problem of different colored light sources 2 being out of focus due to different functional signal lights sharing the same light-emitting surface.

[0025] It should be noted that without the filter element 3, total internal reflection occurs when light travels from a denser medium to a less dense medium at an angle of incidence greater than the angle of total internal reflection. However, since both sides of the surface containing the filter element 3 are light guide bodies 1 with the same medium, total internal reflection does not occur. Therefore, the filter element 3 propagates along its original direction for specific light rays, but acts as a reflector for other colors of light. Furthermore, conventional optical solutions involve multiple LEDs distributed around the optical focal point of the same optical system, leading to defocusing. The light source in this application, however, is no longer focused at a single focal point, thus eliminating this problem.

[0026] Furthermore, the color of the light that can pass through the filter 3 is the same as the color of the light emitted by the light source 2, which is far from the light-emitting surface 4.

[0027] Light source 2, located away from light-emitting surface 4, emits light of one of the three primary colors. Light source 2, located closer to light-emitting surface 4, emits light of the other two primary colors. The light emitted by light source 2 closer to light-emitting surface 4 can also be a mixture of the other two primary colors. For example, the light emitted by light source 2 away from light-emitting surface 4 could be blue light, while the light emitted by light source 2 closer to light-emitting surface 4 could be red and green light, or a mixture of red and green light. When light source 2 away from light-emitting surface 4 is working, the blue light is mixed with the yellow light formed by the mixture of red and green light, and finally, white light is emitted from light-emitting surface 4. When light source 2 away from light-emitting surface 4 is off, light-emitting surface 4 emits yellow light. Therefore, this optical system allows white and yellow light to share the same light-emitting surface 4, and both light sources 2 need to be defocused.

[0028] In another embodiment, the light source 2 away from the light-emitting surface 4 emits light of one of the three primary colors, and the light source 2 close to the light-emitting surface 4 emits light of another of the three primary colors. For example, the light source 2 away from the light-emitting surface 4 emits green light, and the light source 2 close to the light-emitting surface 4 emits red light. When the light source 2 away from the light-emitting surface 4 is working, the light-emitting surface 4 emits green light and red light, which mix to form yellow light; when the light source 2 away from the light-emitting surface 4 is not working, the light-emitting surface 4 emits red light.

[0029] By combining filter 3 with different colors, different colors can be output, thus improving the flexibility of the optical system.

[0030] In addition, the luminous flux of light source 2 can be adjusted according to demand.

[0031] Working principle: Multiple reflective surfaces 11 reflect various types of light to the light-emitting surface 4, while the filter 3 allows specific light to pass through and reflects other colors of light. Then, by using the principle of the three primary colors of light, different colors of light are mixed to obtain the light of the desired color, which solves the problem of different color light sources 2 being out of focus due to the sharing of the light-emitting surface by different function signal lights.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-color multiplexed light guide, characterized in that, include Multiple light sources (2) are provided, and each light source (2) emits light of a different color; The light guide body (1) is provided in multiple forms, and each one corresponds to a light source (2). The light guide body (1) has a reflective surface (11). A filter (3) is disposed on one of the reflective surfaces (11) and is used to allow specific monochromatic light to pass through; The light-emitting surface (4) is used to reflect the light reflected by multiple reflective surfaces (11) and then emit it.

2. The multi-color multiplexing light guide according to claim 1, characterized in that, The filter element (3) is a filter film.

3. The multi-color multiplexing light guide according to claim 1, characterized in that, There are two light sources (2), two light guide bodies (1), and the filter (3) is located between the two light guide bodies (1).

4. A multi-color multiplexed light guide according to claim 3, characterized in that, The adjacent light guide bodies (1) are joined together.

5. A multi-color multiplexed light guide as described in claim 3, characterized in that, The light source (2) that is far from the light-emitting surface (4) emits light of one of the three primary colors, while the light source (2) that is close to the light-emitting surface (4) emits light of the other two primary colors.

6. A multi-color multiplexed light guide as described in claim 5, characterized in that, The light source (2) near the light-emitting surface (4) emits a mixture of two other colors of light from the three primary colors.

7. A multi-color multiplexed light guide as described in claim 3, characterized in that, The color of light that can pass through the filter (3) is the same as the color of light emitted by the light source (2) that is far from the light-emitting surface (4).

8. A multi-color multiplexed light guide as described in claim 7, characterized in that, The light source (2) that is far from the light-emitting surface (4) emits blue light, while the light source (2) that is close to the light-emitting surface (4) emits red and green light or a mixture of red and green light.

9. A multi-color multiplexed light guide as described in claim 7, characterized in that, The light source (2) that is far from the light-emitting surface (4) emits green light, and the light source (2) that is close to the light-emitting surface (4) emits red light.

10. A multi-color multiplexed light guide as described in claim 1, characterized in that, The luminous flux of the light source (2) is adjusted according to demand.

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