An optical module, a car light, and a vehicle

Abstract

This application discloses an optical module, a vehicle headlight, and a vehicle. The optical module includes a first reflector and a second reflector, with the reflective surfaces of the first and second reflectors facing each other. The first reflector is configured to receive light and reflect it to the second reflector. The first and second reflectors together form a composite focal point, located between the first and second reflectors. Light irradiates the first reflector, is reflected by it, converges to the composite focal point, then diverges after passing through the composite focal point, irradiates the second reflector, and finally is reflected by the second reflector towards the target area. The composite focal point allows the second reflector to receive all the light from the composite focal point, increasing the amount of light received by the second reflector and thus improving the overall brightness of the optical lighting system.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting technology, and more particularly to an optical module, a vehicle lamp, and a vehicle. Background Technology

[0002] In modern traffic environments, the number of cars is constantly increasing, and road conditions are becoming increasingly complex. As a crucial medium for information transmission between vehicles and between vehicles and pedestrians, the clarity and accuracy of vehicle lights are paramount for traffic safety. Efficient optical systems with narrow light-emitting widths enable vehicle lights to emit more concentrated and directional light. However, in existing technologies, optical systems achieving narrow light-emitting widths suffer from low light utilization due to the small width of the reflectors and the limited amount of light received.

[0003] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art, and to provide an optical module, a vehicle light, and a vehicle.

[0005] According to one aspect of this application, an optical module is provided, including a first reflector and a second reflector, wherein the reflective surfaces of the first reflector and the second reflector are disposed opposite to each other; the first reflector is configured to receive light and reflect the light to the second reflector; the first reflector and the second reflector together form a composite focal point, wherein the composite focal point is located between the first reflector and the second reflector.

[0006] In one embodiment, the focal length of the first reflector is L, which satisfies: 13 mm ≤ L ≤ 15 mm.

[0007] In one embodiment, L = 14 mm.

[0008] In one embodiment, a projection surface λ is set perpendicular to the main light-emitting direction of the second reflector, and the orthographic projection of the first reflector on the projection surface λ and the orthographic projection of the second reflector on the projection surface λ are adjacent to each other.

[0009] In one embodiment, the focal length of the first reflector is greater than the focal length of the second reflector.

[0010] In one embodiment, the reflective surface of the second mirror is provided with a diffusion pattern.

[0011] In one embodiment, the light source further includes a dimming component and a light source, the dimming component being configured to adjust the light emitted by the light source into parallel light and direct it toward the first reflector.

[0012] In one embodiment, the dimming component, the first reflector, and the second reflector are integrally formed.

[0013] According to another aspect of this application, a vehicle lamp is provided, including any of the optical modules described above.

[0014] According to another aspect of this application, a vehicle is provided, including the aforementioned vehicle lights.

[0015] The beneficial effects of this application are: light shines on the first reflector, is reflected by the first reflector and converges to the composite focal point, then diverges after passing through the composite focal point and shines on the second reflector, and finally is reflected by the second reflector and directed to the target area; the first reflector and the second reflector together form the composite focal point, enabling the second reflector to receive all the light from the composite focal point, increasing the amount of light received by the second reflector, which is beneficial to improving the brightness of the overall optical illumination system. Attached Figure Description

[0016] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of an optical module provided in an embodiment of this application.

[0018] Figure 2 yes Figure 1 The main view.

[0019] Figure 3 This is a comparative schematic diagram of a reflector provided in an embodiment of this application.

[0020] In the picture:

[0021] 10. First reflecting mirror;

[0022] 20. Second reflecting mirror; 21. Diffusion pattern;

[0023] 30. Compound focal point;

[0024] 40. Dimming components. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. 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.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The optical module, headlights, and vehicle of this application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] In existing technologies, optical systems that achieve small light emission widths suffer from low light utilization due to the small width of the reflector, resulting in a small amount of light received.

[0029] To address the aforementioned technical problems, this application provides an optical module including a first reflector and a second reflector, wherein the reflective surfaces of the first reflector and the second reflector are disposed opposite to each other; the first reflector is configured to receive light and reflect the light to the second reflector; the first reflector and the second reflector together form a composite focal point, which is located between the first reflector and the second reflector. This will be described in detail below.

[0030] See Figure 1 and Figure 2 The optical module includes a first reflector 10 and a second reflector 20, with the reflective surfaces of the first reflector 10 and the second reflector 20 arranged opposite to each other; the first reflector 10 is configured to receive light and reflect the light to the second reflector 20; the first reflector 10 and the second reflector 20 together form a composite focal point 30, which is located between the first reflector 10 and the second reflector 20.

[0031] Light shines on the first reflector 10, is reflected by the first reflector 10 and converges to the composite focal point 30. After passing through the composite focal point 30, it diverges and shines on the second reflector 20, and finally is reflected by the second reflector 20 and directed toward the target area. The first reflector 10 and the second reflector 20 together form the composite focal point 30, which enables the second reflector 20 to receive all the light from the composite focal point 30 (the first reflector 10), thus increasing the amount of light received by the second reflector 20.

[0032] In some embodiments, the second reflector 20 needs to satisfy a small light emission width ( Figure 2From the perspective of the second reflector 20, the vertical dimensions are small and can meet the requirements of light emission. The first reflector 10 and the second reflector 20 share a compound focal point 30, which can ensure that the second reflector 20 with a small light emission width receives all the light from the first reflector 10, improves optical efficiency, and avoids the light emitted by the first reflector 10 shining on other areas (areas outside the second reflector 20) and causing light waste, which is conducive to improving the brightness of the overall optical illumination system.

[0033] It is worth mentioning that, in some embodiments, a metal reflective layer, such as aluminum plating, can be provided on the surfaces of the first reflector 10 and the second reflector 20 used for reflection, which can increase the reflectivity of light.

[0034] In some embodiments, the focal length of the first reflector 10 is L, satisfying: 13 mm ≤ L ≤ 15 mm, such as 13 mm, 14 mm, 15 mm, etc.

[0035] To make it easier to understand the possible values ​​of L, let's first consider... Figure 3 Taking reflector one and reflector two as examples, point F1 represents the focal point of reflector one, point P1 represents the vertex of reflector one, and the distance between points F1 and P1 is the focal length of reflector one. Point F2 represents the focal point of reflector two, point P2 represents the vertex of reflector two, and the distance between points F2 and P2 is the focal length of reflector two. It is clearly shown in the diagram that the focal length of reflector one is greater than that of reflector two, and reflector two has a greater degree of curvature at the same height (…). Figure 3 In the vertical direction (viewing angle), reflector 2 can receive more light than reflector 1. That is, in order to receive the same amount of light as reflector 2, reflector 1 needs to increase its size in the vertical direction to receive more light.

[0036] To ensure that the amount of light received does not decrease, the larger the focal length of the first reflecting mirror 10, the more it needs to be adjusted vertically. Figure 2 The dimensions in the viewing angle (hereinafter the same) direction are also increased accordingly. When the value of L is greater than 15 mm, the focal length of the first reflector 10 is too large, which will make the dimensions of the first reflector 10 in the vertical direction too large. Although it can receive the required amount of light, the overall vertical dimension of the optical module increases, which increases the volume occupied by the optical module and is not conducive to the flat shape design of the optical module. When the value of L is less than 13, the focal length of the first reflector 10 is small, that is, the required dimensions of the first reflector 10 in the vertical direction are smaller, which increases the processing difficulty and increases the production cost.

[0037] It is worth mentioning that, in some embodiments, the focal length of the first reflecting mirror 10 can be designed to be a value outside the above-mentioned range, and a suitable focal length can be selected according to actual usage requirements.

[0038] In some embodiments, a projection surface λ is set perpendicular to the main light-emitting direction of the second reflector 20, and the orthographic projection of the first reflector 10 on the projection surface λ and the orthographic projection of the second reflector 20 on the projection surface λ are adjacent to each other.

[0039] The orthographic projections of the first reflector 10 and the second reflector 20 on the projection plane λ are adjacent to each other, meaning that the first reflector 10 will not block the light emitted from the second reflector 20, which is beneficial to improving the lighting effect of the optical module. Furthermore, the two orthographic projections are adjacent, meaning that in the vertical direction (perpendicular to the main light emission direction of the second reflector 20), the distance between the first reflector 10 and the second reflector 20 is zero. This ensures that the first reflector 10 does not block the light emitted from the second reflector 20, while also minimizing the overall size of the optical module in the vertical direction, reducing space occupation, and facilitating the flattening design of the optical module.

[0040] It should be noted that the main light output direction of the second reflecting mirror 20 is as follows: Figure 2 The direction is shown as X.

[0041] In some embodiments, the focal length of the first reflector 10 is greater than the focal length of the second reflector 20.

[0042] Since the first reflector 10 and the second reflector 20 together form a composite focal point 30, the second reflector 20 can receive all the light from the first reflector 10. When the sum of the focal lengths of the first reflector 10 and the second reflector 20 is constant, the focal length of the first reflector 10 being greater than the focal length of the second reflector 20 is beneficial for the first reflector 10 to receive more light (see the aforementioned embodiments for details, which will not be repeated here). That is, the more light reflected to the second reflector 20 (the more light received by the second reflector 20), the higher the optical utilization rate, which is beneficial to improving the brightness of the overall optical illumination system.

[0043] In some embodiments, the reflective surface of the second reflector 20 is provided with a diffusion pattern 21.

[0044] By setting the diffusion pattern 21, the light reflected from the second reflector 20 can be diffused, thereby achieving a uniform lighting effect and meeting the lighting uniformity requirements of the optical system. By controlling the pattern height of the diffusion pattern 21, the diffusion degree of the outgoing light (the light reflected from the second reflector 20) can be precisely controlled, thereby optimizing the uniform lighting effect.

[0045] In some embodiments, the optical module further includes an optical component and a light source, and the dimming component 40 is configured to adjust the light emitted by the light source into parallel light and direct it toward the first reflector 10.

[0046] By adjusting the light through the dimming component 40, the light incident on the first reflector 10 is adjusted to be parallel light, avoiding the chaotic light and improving the lighting effect of the optical module. Moreover, after the light is adjusted to be parallel light, the first reflector 10 can receive more light, which is beneficial to improving the lighting brightness.

[0047] In some embodiments, the dimming component 40, the first reflector 10, and the second reflector 20 are integrally disposed.

[0048] By integrating the dimming component 40, the first reflector 10, and the second reflector 20—that is, by placing both the first reflector 10 and the second reflector 20 on the dimming component 40—it is beneficial to accurately determine the relative positions of the first reflector 10 and the second reflector 20, thereby ensuring the precise position of the composite focal point 30 and improving the lighting effect of the optical module. Furthermore, the integrated design avoids the need for assembly between multiple components (the dimming component 40, the first reflector 10, and the second reflector 20), improving the yield rate. In some embodiments, production efficiency can be improved through processing methods such as injection molding.

[0049] On the other hand, this application relates to a vehicle light, including any of the aforementioned optical modules.

[0050] On the other hand, this application relates to a vehicle including the aforementioned headlights.

[0051] Using the technical solution provided in this application embodiment, light shines on the first reflector 10, is reflected by the first reflector 10 and converges to the composite focal point 30, then diverges after passing through the composite focal point 30 and shines on the second reflector 20, and finally is reflected by the second reflector 20 and directed toward the target area; the first reflector 10 and the second reflector 20 together form the composite focal point 30, so that the second reflector 20 can receive all the light from the composite focal point 30, increasing the amount of light received by the second reflector 20, which is beneficial to improving the brightness of the overall optical illumination system.

[0052] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more than one" means two or more.

[0053] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0054] The optical module, vehicle light, and vehicle provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An optical module, characterized in that, It includes a first reflector and a second reflector, wherein the reflecting surfaces of the first reflector and the second reflector are arranged opposite to each other; The first reflector is configured to receive light and reflect it to the second reflector; The first reflector and the second reflector together form a composite focal point, which is located between the first reflector and the second reflector.

2. The optical module as described in claim 1, characterized in that, The focal length of the first reflecting mirror is L, which satisfies: 13 mm ≤ L ≤ 15 mm.

3. The optical module as described in claim 2, characterized in that, L＝14㎜。 4. The optical module as described in claim 1, characterized in that, A projection surface λ is defined that is perpendicular to the main light emission direction of the second reflector, and the orthographic projection of the first reflector on the projection surface λ and the orthographic projection of the second reflector on the projection surface λ are adjacent to each other.

5. The optical module as described in claim 1, characterized in that, The focal length of the first reflector is greater than the focal length of the second reflector.

6. The optical module as described in claim 1, characterized in that, The reflecting surface of the second mirror is provided with a diffusion pattern.

7. The optical module as described in claim 1, characterized in that, It also includes a dimming component and a light source, wherein the dimming component is configured to adjust the light emitted by the light source into parallel light and direct it toward the first reflector.

8. The optical module as described in claim 7, characterized in that, The dimming component, the first reflector, and the second reflector are integrated into one unit.

9. A vehicle light, characterized in that, Includes the optical module as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Including the vehicle lights as described in claim 9.

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