Short-distance optical lighting system

Abstract

The utility model discloses a short-distance optical lightening system, which comprises a light-emitting unit, a reflecting unit and an imaging unit, the reflecting unit comprises a reflecting surface, the reflecting surface is a mirror surface, and the light emitting unit is used for forming a light source into a plurality of convergent points, so that the convergent points form a plurality of virtual convergent points along a mirror image of the reflecting unit; the imaging unit comprises a contour line, the contour line projects the virtual convergent point at the corresponding position, and the optical system has the advantages that the road surface projection is uniform, and the front-back arrangement size of the optical system is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of automotive lighting technology, specifically relating to a short-range optical lighting system. Background Technology

[0002] With the rapid development of the automotive industry, intelligent lighting systems have placed higher demands on the optical performance of vehicle lights, especially illumination uniformity, which has become a key indicator for evaluating the quality of vehicle lights. To meet this demand, the current mainstream solution is to use the projection imaging principle of lenses to precisely capture areas with uniform light distribution for secondary light distribution, thereby effectively improving illumination uniformity. However, this lens-based optical solution has inherent limitations: according to the principle of optical imaging, the light source must be placed at the focal point of the lens, which leads to a theoretical constraint on the distance between the light source and the lens. This spatial limitation makes it difficult for this optical combination to adapt to the modern vehicle light design with extremely high requirements for structural compactness, becoming a technical bottleneck restricting the innovation and miniaturization of vehicle light design. In order to ensure the uniformity of road projection and save on the length requirements of the entire optical system, a short-distance optical lighting system is proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a short-range optical illumination system, which has the advantages of uniform road surface projection and shortened front and rear arrangement size of the optical system.

[0005] The short-range optical illumination system according to an embodiment of the present invention includes: a light-emitting unit, a reflection unit, and an imaging unit; the reflection unit includes a reflective surface, which is a mirror surface; the light-emitting unit is used to form a light source into multiple converging points, such that the multiple converging points form multiple virtual converging points along the mirror image of the reflection unit; the imaging unit includes a contour line, which projects onto the corresponding virtual converging points.

[0006] According to one embodiment of the present invention, the number of imaging units is the same as the number of converging points formed by the light-emitting units on the reflective surface, and the focal point of the imaging unit corresponds one-to-one with multiple virtual converging points.

[0007] According to one embodiment of the present invention, multiple imaging units respectively superimpose multiple light distributions onto the same illuminated area, or some imaging units superimpose the light distribution at their focal points onto the same illuminated area.

[0008] According to one embodiment of the present invention, the imaging unit is formed by a contour line extending along its normal direction.

[0009] According to one embodiment of the present invention, the reflective surface is gradually tilted at a certain angle toward the light-emitting unit along the light-emitting direction of the light-emitting unit.

[0010] According to one embodiment of the present invention, the contour line is located in the vertical direction, and the plurality of imaging units are arranged in the vertical direction.

[0011] According to one embodiment of the present invention, the imaging unit is a spherical surface formed by rotating the contour line around the focal point.

[0012] According to one embodiment of the present invention, a plurality of imaging units are arranged in an array.

[0013] According to one embodiment of the present invention, a thick-walled member is included, wherein the reflection unit and the imaging unit are respectively formed at both ends of the thick-walled member.

[0014] The beneficial effects of this utility model are that it uses the reflective surface of the mirror to form a virtual convergence point, and the imaging unit projects the virtual convergence point or the vicinity of the virtual convergence point, thereby shortening the distance from the imaging unit to the mirror and reducing the size in the light output direction, which is convenient to adapt to the shape of the car headlight with limited width; in addition, since the virtual convergence point in the mirror is the light distribution after convergence, the uniformity of the road surface projection is achieved through the projection imaging of the imaging unit.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which:

[0018] Figure 1 This is a three-dimensional schematic diagram of the imaging unit of this utility model when it has a columnar structure;

[0019] Figure 2 This is a schematic diagram of the vertical plane light path of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the imaging unit of this utility model when it has a spherical structure;

[0021] Figure label:

[0022] 1. Reflective surface; 2. Imaging unit; 3. Light-emitting unit; 4. Thick-walled component. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] 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.

[0025] 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.

[0026] The short-range optical illumination system of this utility model is described in detail below with reference to the accompanying drawings.

[0027] like Figures 1-3 As shown, the short-range optical illumination system according to an embodiment of the present invention includes: a light-emitting unit 3, a reflection unit, and an imaging unit 2; the reflection unit includes a reflection surface 1, which is a mirror surface; the light-emitting unit 3 is used to form a light source into multiple converging points, so that the multiple converging points form multiple virtual converging points along the mirror image of the reflection unit; the imaging unit 2 includes a contour line, which has a focal point, and the contour line projects onto the corresponding virtual converging points.

[0028] In this embodiment, the convergence point formed by the light-emitting unit 3 can be a small area of ​​light distribution. That is to say, the size of the light-emitting unit 3 convergence is not limited to a single point. The reflective surface 1 of the mirror is used to form a virtual convergence point. The imaging unit 2 images the virtual convergence point, thereby shortening the distance from the imaging unit 2 to the mirror. At this time, the light-emitting unit 3 is located above the reflective unit and in the area between the light-emitting unit 3 and the imaging unit 2. Therefore, the size of the optical lighting system is greatly shortened in the light-emitting direction, which is convenient to adapt to the headlight shape with limited front and rear directions. In addition, since the virtual convergence point in the mirror is the converged light distribution, the uniformity of the road surface projection is achieved through the projection imaging of the imaging unit 2.

[0029] Furthermore, imaging unit 2 may be equipped with a diffusion coefficient or have a diffusion pattern added.

[0030] The number of imaging units 2 is the same as the number of convergence points formed by the light-emitting units 3 on the reflective surface 1. The focal point of the imaging unit 2 corresponds one-to-one with multiple virtual convergence points. The focal point of the imaging unit 2 and its corresponding virtual convergence point may or may not coincide. Preferably, the focal point of the imaging unit 2 coincides with its corresponding virtual convergence point.

[0031] In this embodiment, by setting multiple imaging units 2, the size of the imaging units 2 is reduced to form a micro-unit, which can shorten the focal length of the outline of the imaging unit 2, further greatly reducing the size in the front-to-back direction.

[0032] Multiple imaging units 2 respectively superimpose multiple light distributions onto the same illuminated area, or some imaging units 2 superimpose the light distribution at their focal points onto the same illuminated area, while another part of the imaging units 2 supplements the illuminated area of ​​the part of the imaging units 2 with the light distribution at their focal points, so as to meet a larger illumination angle.

[0033] A small range of deviation is allowed within the same illuminated area.

[0034] In this embodiment, since multiple imaging units 2 superimpose multiple light distributions onto the same illumination area, the problem of uneven road projection effect caused by using ordinary-sized imaging units 2 is avoided. Multiple micro-units are used to form multiple projection areas and superimpose them to achieve uniformity of road illumination.

[0035] Imaging unit 2 is formed by extending the contour line along its normal direction, and the length of the extension can be set according to the length requirement of the light emission.

[0036] The reflecting surface 1 is tilted at a certain angle to the direction of light emission in the vertical plane.

[0037] That is, if the reflective surface 1 is located to the left of the imaging unit 2 and the light-emitting unit 3 is located above the reflective surface 1, then the lower end of the reflective surface 1 is tilted to the right.

[0038] The outline is located in the vertical direction, and multiple imaging units 2 are arranged in the vertical direction. This arrangement forms this direction on the projection surface. The angle of the specific imaging unit 2 can be adaptively adjusted according to the requirements, and the focal length of each imaging unit 2 can also be set to different sizes according to the requirements.

[0039] Imaging unit 2 is a rotating surface formed by rotating the contour line around the focal point. Multiple imaging units 2 are arranged in an array. In order to facilitate the connection between the imaging units 2, part of the edges of the imaging units 2 can be removed to form a rectangle in the projection vision. Similarly, the angle of each imaging unit 2 can be adaptively adjusted according to the requirements, and the focal length of each imaging unit 2 can also be set to different sizes according to the requirements.

[0040] The reflection unit and the imaging unit 2 can be separate entities or formed at both ends of the thick-walled member 4. Preferably, the reflection unit and the imaging unit 2 are formed at both ends of the thick-walled member 4. By integral molding, the subsequent installation steps are simplified and the accuracy of each angle is improved.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A short-range optical illumination system, characterized in that, include: Light-emitting unit (3); The reflective unit includes a reflective surface (1), which is a mirror. The light-emitting unit (3) is used to form multiple converging points of the light source, so that the multiple converging points form multiple virtual converging points along the mirror image of the reflective unit. An imaging unit (2) includes a contour line, which projects onto a virtual convergence point at its corresponding location.

2. The short-range optical illumination system according to claim 1, characterized in that, The number of imaging units (2) is the same as the number of convergence points formed by the light-emitting units (3) on the reflective surface (1), and the focal point of the imaging unit (2) corresponds one-to-one with multiple virtual convergence points.

3. The short-range optical illumination system according to claim 2, characterized in that, Multiple imaging units (2) respectively superimpose multiple light distributions onto the same illuminated area, or some imaging units (2) superimpose the light distribution at their focal points onto the same illuminated area.

4. The short-range optical illumination system according to claim 3, characterized in that, The imaging unit (2) is formed by extending the contour line along its normal direction.

5. The short-range optical illumination system according to claim 4, characterized in that, The reflective surface (1) is inclined at a certain angle to the light output direction in the vertical plane.

6. The short-range optical illumination system according to claim 5, characterized in that, The outline is located in the vertical direction, and the plurality of imaging units (2) are arranged in the vertical direction.

7. The short-range optical illumination system according to claim 6, characterized in that, The imaging unit (2) is a spherical surface formed by rotating the contour line around the focal point.

8. The short-range optical illumination system according to claim 5, characterized in that, Multiple imaging units (2) are arranged in an array.

9. The short-range optical illumination system according to claim 1, characterized in that, It includes a thick-walled member (4), and the reflection unit and the imaging unit (2) are respectively formed at both ends of the thick-walled member (4).

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