Optical coupling structure and vehicle lamp

Abstract

The utility model belongs to the technical field of car lamps, and particularly relates to an optical coupling structure and a car lamp, the optical coupling structure comprises a plurality of light sources and a reflecting mirror, the inner surface of the reflecting mirror comprises a plurality of coupling reflecting surfaces, the coupling reflecting surfaces are arranged in parallel, the generatrix of each coupling reflecting surface is an ellipse, and the ellipse is provided with a first focus and a second focus. Each first focus is provided with a light source, and the multiple second focuses are arranged in an overlapped mode. According to the utility model, the generatrix of each coupling reflection surface is the ellipse, the light source is arranged on the first focus by utilizing the characteristics of the ellipse, the second focuses of the plurality of generatrixes are overlapped, and the light emitted by each light source from the first focus is totally reflected by the coupling reflection surfaces and then is converged on the second focus, so that the light of the plurality of focuses is coupled into one focus; therefore, the defocusing problem is avoided, the light efficiency is reasonably and efficiently utilized, and the lighting is uniform and attractive.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car light, especially to a light coupling structure and car light. BACKGROUND

[0002] With the rapid development of the automobile industry and the increasing demand of consumers for the appearance and performance of the automobile, the automobile light technology also ushered in unprecedented development opportunities and challenges. As an important part of the automobile, the car light not only bears the basic functions of lighting and signal transmission, but also gradually becomes the key element of showing the design aesthetics and brand value of the automobile. In recent years, the modeling design of the automobile light is increasingly diversified, and higher requirements are put forward for the uniformity and efficiency of the lighting effect of the car light.

[0003] In the existing car light design scheme, the light emitted from the LED (light-emitting diode) light source needs to pass through a series of optical action devices (such as reflectors, lenses, etc.) before being emitted from the light-emitting surface. However, the design and manufacture of these optical elements often have limitations, especially in the case of multi-function sharing the same light outlet, such as the reflector / direct type scheme, the optical element at the light inlet has only one focal point, which causes at least one of the two color lights to be out of focus, resulting in low efficiency, poor lighting uniformity, and improper light type. SUMMARY

[0004] The technical problem to be solved by the utility model is that in the prior art, at least one light color is out of focus. The utility model provides a light coupling structure and car light, which couples multiple focal points into a focal point structure, has high light efficiency, and has uniform lighting.

[0005] The technical scheme adopted by the utility model to solve the technical problem is: a light coupling structure, comprising: a plurality of light sources; and

[0006] a reflector, the inner surface of the reflector comprising a plurality of coupling reflection surfaces, the plurality of coupling reflection surfaces being arranged side by side, the generatrix of each coupling reflection surface being an ellipse, the ellipse having a first focal point and a second focal point, one of the light sources being arranged on each first focal point, and the plurality of second focal points being arranged coincidentally.

[0007] Among them, the light emitted from each light source is fully reflected by the coupling reflection surface and converges on the second focal point.

[0008] The specific technical effect is: the generatrix of each coupling reflecting surface is an ellipse, the light source is arranged at the first focus point by using the characteristics of the ellipse, the second focus points of the plurality of generatrices are arranged in coincidence, the light emitted from the first focus point of each light source is converged at the second focus point after total reflection of the coupling reflecting surface, the light coupling of the plurality of focus points is combined into one focus point, and then the light is emitted from the coupling focus point, thereby avoiding the defocus problem, reasonably and efficiently utilizing the light efficiency, and making the lighting uniform and beautiful.

[0009] Further, the length of the major axis of the generatrix is a, the length of the minor axis of the generatrix is b, and the coordinates of any point on the generatrix are (x, y), wherein x and y satisfy the formula Wherein, a and b are not necessarily the same.

[0010] The specific technical effect is: by changing the length of the major axis and the minor axis, the distance (i.e. focal length) between the two focus points in each generatrix and the shape and size of the generatrix can be adjusted according to actual use requirements.

[0011] Further, it further comprises a collimating lens, which is arranged on one side of the reflector, and the second focus point is located between the reflector and the collimating lens.

[0012] The specific technical effect is: the reflector is used in combination with the collimating lens, and the light converging at the second focus point is collimated by the collimating lens and then emitted in parallel.

[0013] Further, the coupling reflecting surface is coated with aluminum.

[0014] The specific technical effect is: by coating, a layer of aluminum protective film is formed on the surface of the reflecting surface, which can further enhance the reflecting effect, and the aluminum-coated reflecting surface can significantly increase the reflecting ability of the coupling reflecting surface, so that more light is effectively reflected, thereby improving the reflecting efficiency.

[0015] Further, the coupling reflecting surface is a smooth surface.

[0016] The specific technical effect is: to improve the reflecting efficiency and directivity, the smooth reflecting surface can make the reflected light more concentrated in direction, and this reflecting method can reduce the energy loss of light in the reflecting process, thereby improving the reflecting efficiency, and the light reflected by the smooth surface has strong directivity and is reflected at a specific angle, which can be applied in occasions requiring directional reflection of light.

[0017] Further, the coupling reflecting surface is provided with a light distribution pattern or a skin pattern.

[0018] The specific technical effect is: the light distribution pattern or the skin pattern can make the reflected light more uniformly distributed in space by changing the shape and texture of the reflecting surface, so that the lighting uniformity is better.

[0019] Further, the number of the coupling reflection surfaces is two, the two coupling reflection surfaces are a first coupling surface and a second coupling surface respectively, the first coupling surface has a first focal point A1 and a second focal point B1, the second coupling surface has a first focal point A2 and a second focal point B2, A1 and A2 are arranged side by side, and B1 and B2 are arranged coincidently.

[0020] Further, the number of the coupling reflection surfaces is three, the three coupling reflection surfaces are a first coupling surface, a second coupling surface and a third coupling surface respectively, the first coupling surface has a first focal point A1 and a second focal point B1, the second coupling surface has a first focal point A2 and a second focal point B2, the third coupling surface has a first focal point A3 and a second focal point B3, A1, A2 and A3 are arranged side by side, and B1, B2 and B3 are arranged coincidently.

[0021] A vehicle lamp, wherein the light coupling structure as claimed in any one of the preceding claims is comprised.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] The generatrix of each coupling reflection surface is an ellipse, the light source is arranged on the first focal point by using the characteristics of the ellipse, the second focal points of the multiple generatrices are arranged coincidently, the light emitted from the first focal point of each light source is converged on the second focal point after total reflection of the coupling reflection surface, the light coupling of the multiple focal points is formed into one focal point, and the light is emitted from the coupling focal point, so that the defocus problem is avoided, the light efficiency is reasonably and efficiently utilized, and the lighting is uniform and beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model is further described below in combination with the drawings and embodiments.

[0025] Figure 1 It is the structure schematic diagram of the generatrix of the utility model;

[0026] Figure 2 It is the structure schematic diagram of embodiment 1 of the utility model;

[0027] Figure 3 It is the optical path diagram of embodiment 1 of the utility model;

[0028] Figure 4 It is the structure schematic diagram of embodiment 2 of the utility model;

[0029] Figure 5 It is the optical path diagram of embodiment 3 of the utility model.

[0030] In the drawing: 1, light source; 2, reflector; 201, coupling reflection surface; 202, generatrix; 203, first focal point; 204, second focal point; 3, collimating lens. DETAILED DESCRIPTION

[0031] The utility model will be further described in detail in connection with the drawings. These drawings are all simplified schematic diagrams, which only schematically show the basic structure of the utility model, and thus only show the structures related to the utility model.

[0032] In the description of the utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the indicated devices or elements to have a particular orientation, to be constructed and operated in a particular orientation, and thus cannot be understood as limiting the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0033] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] As Figures 2 to 3 shown, it is the preferred embodiment 1 of the utility model, a light coupling structure of the embodiment 1, including a plurality of light sources 1;And

[0035] The inner surface of the mirror 2 includes two coupling reflection surfaces 201, the two coupling reflection surfaces 201 are arranged side by side, and the two coupling reflection surfaces 201 are respectively a first coupling surface and a second coupling surface. The generatrix 202 of the first coupling surface and the second coupling surface is an ellipse, the first coupling surface has a first focus 203A1 and a second focus 204B1, the second coupling surface has a first focus 203A2 and a second focus 204B2, A1 and A2 are arranged side by side, B1 and B2 are arranged coincidentally;A1 and A2 are provided with a light source 1;

[0036] Among them, the light emitted by one light source 1 from A1 is converged in B1 after total reflection of the first coupling surface, and the light emitted by another light source 1 from A2 is converged in B2 after total reflection of the second coupling surface.

[0037] Therefore, the busbar 202 of each coupling reflective surface 201 is an ellipse. By utilizing the characteristics of the ellipse, the light source 1 is set on the first focus 203, and the second focuses 204 of multiple busbars 202 are overlapped. The light emitted from the first focus 203 by each light source 1 is converged at the second focus 204 after being totally reflected by the coupling reflective surface 201, so that the light from multiple focuses is coupled into one focus and then emitted from the coupled focus, avoiding the defocus problem, rationally and efficiently utilizing light efficiency, and achieving uniform and beautiful lighting.

[0038] In this embodiment, the length of the major semi-axis of the busbar 202 is a, the length of the minor semi-axis of the busbar 202 is b, and the coordinates of any point on the busbar 202 are (x, y), then x and y satisfy the formula Among them: a and b do not have to be the same.

[0039] Therefore, by changing the lengths of the major and minor axes, the distance between the two focal points in each busbar 202 (ie, the focal length) and the shape and size of the busbar 202 can be adjusted according to actual usage requirements.

[0040] In this embodiment, the coupling reflective surface 201 is plated with aluminum.

[0041] Therefore, through the coating process, a layer of aluminum protective film is formed on the surface of the reflective surface, which can further enhance its reflection effect. The aluminum-plated reflective surface can significantly increase the reflection ability of the coupled reflective surface 201, so that more light is effectively reflected, thereby improving the reflection efficiency.

[0042] In this embodiment, the coupling reflection surface 201 is a smooth surface.

[0043] Therefore: the reflection efficiency and directionality are improved. The smooth reflecting surface can make the direction of the reflected light more concentrated. This reflection method makes the light lose less energy during the reflection process, thereby improving the reflection efficiency. The light reflected by the smooth surface has extremely strong directionality. They will be reflected at a specific angle and can be used in situations where directional reflection of light is required.

[0044] In this embodiment, a light distribution pattern or a leather texture is provided on the coupling reflective surface 201 .

[0045] Therefore, the light distribution pattern or leather grain can change the shape and texture of the reflective surface to make the reflected light more evenly distributed in the space, thereby improving the lighting uniformity.

[0046] The present invention also has the following implementation methods based on the above:

[0047] Example 2:

[0048] like Figure 4 As shown,

[0049] Different from embodiment 1, the difference lies in that:

[0050] In the embodiment, the number of the coupling reflection surfaces 201 can be selected according to actual needs, and is not limited to two, and can be multiple, for example, the number of the coupling reflection surfaces 201 is three, the three coupling reflection surfaces 201 are respectively a first coupling surface, a second coupling surface and a third coupling surface, the first coupling surface has a first focal point 203A1 and a second focal point 204B1, the second coupling surface has a first focal point 203A2 and a second focal point 204B2, and the third coupling surface has a first focal point 203A3 and a second focal point 204B3, A1, A2 and A3 are arranged side by side, B1, B2 and B3 are arranged in coincidence, and each of A1, A2 and A3 is provided with a light source 1.

[0051] Among them, the light emitted by the first light source 1 from A1 is all converged on B1 after total reflection of the first coupling surface, the light emitted by the second light source 1 from A2 is all converged on B2 after total reflection of the second coupling surface, and the light emitted by the third light source 1 from A3 is all converged on B3 after total reflection of the second coupling surface.

[0052] The above is only a preferred embodiment of the utility model, and does not limit the implementation mode and protection scope of the utility model.

[0053] The utility model still has the following implementation mode on the basis of the above:

[0054] Embodiment 3:

[0055] As shown in Figure 5 ,

[0056] Different from embodiment 1, the difference lies in that:

[0057] In the embodiment, it also includes: collimating lens 3, collimating lens 3 is arranged at one side of reflector 2, and the second focal point 204 is located between reflector 2 and collimating lens 3.

[0058] Therefore: reflector 2 is used in combination with collimating lens 3, and the light converged on the second focal point 204 is collimated by collimating lens 3 and then emitted in parallel.

[0059] The utility model still has the following implementation mode on the basis of the above:

[0060] Embodiment 4:

[0061] Each coupling reflective surface 201 is formed by rotating its generatrix 202 around an axis (for example, a major semi-axis or a minor semi-axis), for example, when the coupling reflective surface 201 is formed by rotating its generatrix 202 around the major semi-axis, a plurality of sections of the coupling reflective surface 201 parallel to the XY plane are cut, each of the sections is in an elliptical shape, each of the elliptical sections has a first focal point 203 and a second focal point 204, the second focal points 204 are sequentially connected to form a focal line, and thus the light emitted from the first focal points 203 is totally reflected by the coupling reflective surface 201 and converges to the focal line.

[0062] The utility model discloses still have the following implementation on the basis of above:

[0063] Embodiment 5:

[0064] A vehicle lamp, wherein, including the light coupling structure as any one of the above.

[0065] Compared with the prior art, the utility model has the beneficial effects that:

[0066] The generatrix 202 of each coupling reflective surface 201 is an ellipse, the light source 1 is arranged on the first focal point 203 by utilizing the characteristics of the ellipse, the second focal points 204 of the plurality of generatrices 202 are arranged in coincidence, the light emitted from the first focal point 203 of each light source 1 is totally reflected by the coupling reflective surface 201 and converges to the second focal point 204, the light coupling of the multiple focal points is formed into one focal point, and then the light is emitted from the coupling focal point, so that the defocus problem is avoided, the light efficiency is reasonably and efficiently utilized, and the lighting is uniform and beautiful.

[0067] The above-mentioned ideal embodiments of the utility model are for inspiration, through the above-mentioned description, the relevant staff can make various changes and modifications without deviating from the technical idea of the utility model, the technical scope of the utility model is not limited to the content in the specification, and must be determined by the scope of claims.

Claims

1. An optical coupling structure, characterized by, Comprise: a plurality of light sources (1); and a reflector (2), the inner surface of the reflector (2) comprising a plurality of coupling reflecting surfaces (201), the plurality of coupling reflecting surfaces (201) being arranged side by side, the generatrix (202) of each coupling reflecting surface (201) being an ellipse having a first focal point (203) and a second focal point (204), one of the light sources (1) being arranged at each first focal point (203), the plurality of second focal points (204) being arranged coincidently; wherein the light rays emitted from each light source (1) at the first focal point (203) are totally reflected by the coupling reflecting surface (201) and converge at the second focal point (204).

2. An optical coupling structure as claimed in claim 1, characterized in that The long semi-axis length of the generatrix (202) is a, the short semi-axis length of the generatrix (202) is b, and the coordinates of any point on the generatrix (202) are (x, y), so that x and y satisfy the formula Wherein a and b are not necessarily the same.

3. An optical coupling structure as claimed in claim 1, characterized in that Further comprise: a collimating lens (3) arranged at one side of the reflector (2), the second focal point (204) being located between the reflector (2) and the collimating lens (3).

4. An optical coupling structure as claimed in claim 1, characterized in that The coupling reflecting surface (201) is coated with aluminum.

5. An optical coupling structure as claimed in claim 1, characterized in that The coupling reflecting surface (201) is a smooth surface.

6. An optical coupling structure as claimed in claim 1, characterized in that The coupling reflecting surface (201) is provided with a light distribution pattern or a skin pattern.

7. An optical coupling structure as claimed in claim 1, characterized in that The number of the coupling reflecting surfaces (201) is two, the two coupling reflecting surfaces (201) being a first coupling surface and a second coupling surface respectively, the first coupling surface having a first focal point (203) A1 and a second focal point (204) B1, the second coupling surface having a first focal point (203) A2 and a second focal point (204) B2, A1 and A2 being arranged side by side, B1 and B2 being arranged coincidently.

8. An optical coupling structure as claimed in claim 1, characterized in that The number of the coupling reflecting surfaces (201) is three, the three coupling reflecting surfaces (201) being a first coupling surface, a second coupling surface and a third coupling surface respectively, the first coupling surface having a first focal point (203) A1 and a second focal point (204) B1, the second coupling surface having a first focal point (203) A2 and a second focal point (204) B2, the third coupling surface having a first focal point (203) A3 and a second focal point (204) B3, A1, A2, A3 being arranged side by side, B1, B2, B3 being arranged coincidently.

9. A vehicle lamp characterized by Comprise a light coupling structure as claimed in any one of claims 1 to 8.

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