Primary optical system for DMD illumination and vehicle

Abstract

The utility model discloses a primary optical system for DMD illumination and a vehicle, including a light incident portion, a cylindrical surface refraction light emitting portion and a parabolic cylinder reflection portion, the light incident portion is suitable for collimating and correcting incident light, the cylindrical surface refraction light emitting portion is suitable for receiving the incident light collimated by the light incident portion, and the parabolic cylinder reflection portion is suitable for reflecting the incident light. The light incident part is used for collimating incident light rays and converging the incident light rays in the horizontal direction, and the parabolic cylinder reflecting part is suitable for receiving the incident light rays collimated by the light incident part and converging the incident light rays in the vertical direction. According to the utility model, the focal lengths of the cylindrical surface refraction light emitting part and the parabolic cylindrical surface reflection part can be flexibly adjusted so as to adapt to the size of a light spot incident to the DMD, the optical efficiency of the optical system is higher, and the uniformity of the formed light spot is better.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp lighting, in particular to a primary optical system for DMD lighting, and also to a vehicle. Background Art

[0002] The existing primary optical system for DMD lighting usually uses multiple sets of lenses to collimate the light emitted by the light source and then input it to the DMD surface. However, due to the absorption rate of the lens, part of the light emitted by the light source is used by the lens, resulting in low light efficiency. In addition, multiple sets of lenses lead to high costs, large dimensional chains, and high tolerances, which are not conducive to the stability of optical performance.

[0003] In view of this, it is necessary to design a primary optical system for DMD illumination to overcome the above defects. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the utility model provides a primary optical system for DMD lighting, which can simplify the overall assembly structure and reduce the occupied space of the overall structure.

[0006] According to the first aspect of the utility model, a primary optical system for DMD lighting is provided, comprising a light input portion, a cylindrical refractive light output portion and a parabolic reflective portion, wherein the light input portion collimates and corrects incident light, the cylindrical refractive light output portion is suitable for receiving the incident light after being collimated by the light input portion, and converges the incident light in the horizontal direction, and the parabolic reflective portion is suitable for receiving the incident light after being collimated by the light input portion, and converges the incident light in the vertical direction.

[0007] Preferably, the cylindrical refracting light-emitting portion is suitable for receiving incident light emitted through the light-incoming portion to collimate the incident light into a vertical line.

[0008] Further preferably, the contour line of the cylindrical light-refracting portion is a curve, the curve is stretched along the vertical direction to form the cylindrical light-refracting portion, and the curve is negatively convex toward the optical axis.

[0009] Preferably, the contour line of the parabolic reflecting portion in a vertical plane is a parabola, and the parabola is stretched in a horizontal direction to form the parabolic reflecting portion.

[0010] Further preferably, the incident light sequentially passes through the cylindrical refraction light emitting portion and the parabolic cylinder reflection portion to converge to form a point, and the point is the focus of the parabola.

[0011] Preferably, the distance between the focus of the main line refracting light portion and the focus of the parabolic reflecting portion is twice the focal length of the parabola.

[0012] Further preferably, the light refracting portion and the reflecting portion are movably adjustable so as to control the focal length therebetween.

[0013] Preferably, after the incident light passes through the light incident portion and the refracting light output portion in sequence, the propagation direction of the incident light in the vertical direction remains unchanged.

[0014] Further preferably, the light incident portion, the cylindrical refractive light emitting portion and the parabolic reflective portion are sequentially arranged along the positive direction of the optical axis.

[0015] The beneficial effect of the utility model is that the focal lengths of the cylindrical refraction light part and the parabolic cylindrical reflection part can be flexibly adjusted to adapt to the size of the light spot incident on the DMD, the optical efficiency of the optical system is higher, and the uniformity of the formed light spot is better.

[0016] A second aspect of the utility model provides a vehicle, comprising the primary optical system for DMD lighting according to the first aspect of the utility model.

[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural diagram of the primary optical system for DMD lighting of the utility model;

[0021] Figure 2 It is a light principle diagram of the primary optical system for DMD lighting of the utility model in a vertical plane;

[0022] Figure 3 The optical principle diagram of the primary optical system for DMD lighting of the utility model in the horizontal plane;

[0023] Figure 4 This is a light pattern diagram formed by the primary optical system for DMD lighting of the present utility model.

[0024] Reference numerals

[0025] 1. Light entrance part; 2. Cylindrical refraction light exit part; 3. Parabolic cylinder reflection part. DETAILED DESCRIPTION

[0026] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0027] In the description of the present invention, it should be understood that the terms "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] See also Figure 1 The specific implementation of the utility model is a primary optical system for DMD lighting, including a light input part 1, a cylindrical refractive light output part 2 and a parabolic cylindrical reflective part 3. The light input part 1 is connected to the cylindrical refractive light output part 2. Preferably, the light input part 1 and the refractive light output part can be connected to form a whole, thereby reducing the number of parts required for the assembly of the two, and can effectively reduce the tolerance, so that the optical stability of the integrally formed light input part 1 and the refractive light output part is better, and the light input part 1 can converge and collimate the incident light entering therein. The light input part 1 is mainly a concentrator, which can collimate the light emitted by the light source into parallel light or quasi-parallel light. Of course, in addition to being a concentrator, the light input part 1 can also be set as an optical element such as a lens or a reflector, but the optical efficiency of using a concentrator as the light input part 1 is higher.

[0029] See also Figures 2 to 3 In addition, the cylindrical refractive light output portion 2 can receive the incident light after being collimated by the light input portion 1, and the cylindrical refractive light output portion 2 can converge the incident light in the horizontal direction, the parabolic reflective portion 3 can receive the incident light after being collimated by the light input portion 1, and converge the incident light in the vertical direction, and the focal length between the cylindrical refractive light output portion 2 and the parabolic reflective surface can be flexibly adjusted to adapt the size of the light spot incident to the DMD.

[0030] Specifically, the cylindrical refractive light output portion 2 can receive the incident light emitted through the light input portion 1, and collimate the incident light into a vertical line. The contour line of the cylindrical refractive light output portion 2 is a curve, which is stretched along the vertical direction to form the cylindrical refractive light output portion 2, and the curve is convex to the negative direction of the optical axis. The contour curve of the refractive light output portion can turn the light collimated by the concentrator into a point in the horizontal plane, but because the cylindrical refractive light output portion 2 is formed by stretching the contour line in the vertical direction, the cylindrical refractive light output portion 2 can form the collimated light emitted by the concentrator into a vertical line, and the cylindrical refractive light output portion 2 has almost no effect on the vertical direction. That is, in the horizontal plane, the outgoing light emitted by the light source is collimated and corrected by the light input portion 1 (concentrator), and then converges to a point after being acted upon by the cylindrical refractive light output portion 2.

[0031] See also Figure 4 , more specifically, the contour line of the parabolic reflector 3 in the vertical plane is a parabola, and the parabola is stretched in the horizontal direction to form the parabolic reflector 3. The reflector can form a vertical line formed by the cylindrical refraction light output portion 2 into a point. In the vertical plane, after the light emitted by the light source is collimated and corrected by the light input portion 1 (concentrator), the corrected light passes through the cylindrical refraction light output portion 2, and the propagation direction of the light emitted after passing through the cylindrical refraction light output portion 2 remains unchanged. Finally, after being reflected by the parabolic reflector 3, the incident light finally converges to form a point, which is the focus of the contour line of the parabolic reflector 3 in the vertical plane. In addition, the distance between the focus of the cylindrical refraction light output portion 2 and the focus of the parabolic reflector 3 is twice the focal length of the parabola. Among them, the focal length of the refracted light part determines the angle of the final light pattern in the horizontal direction, and the focal length of the parabolic reflecting part 3 determines the angle of the final light pattern in the vertical direction. The focal length between the two can be flexibly adjusted to obtain light patterns at different angles in the vertical and horizontal directions. The light pattern obtained by the optical system has higher optical efficiency and better spot uniformity.

[0032] The utility model provides a vehicle, which adopts the primary optical system for DMD lighting described in any one of the above embodiments of the utility model.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above description is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of the utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A primary optical system for DMD lighting, characterized in that: The invention comprises a light input portion (1), a cylindrical refractive light output portion (2) and a parabolic reflective portion (3), wherein the light input portion (1) is suitable for collimating and correcting incident light, the cylindrical refractive light output portion (2) is suitable for receiving the incident light after being collimated by the light input portion (1) and converging the incident light in the horizontal direction, and the parabolic reflective portion (3) is suitable for receiving the incident light after being collimated by the light input portion (1) and converging the incident light in the vertical direction.

2. The primary optical system for DMD illumination according to claim 1, characterized in that: The cylindrical refractive light output portion (2) is suitable for receiving incident light emitted through the light input portion (1) to collimate the incident light into a vertical line.

3. The primary optical system for DMD illumination according to claim 2, characterized in that: The contour line of the cylindrical light-refractionating portion (2) is a curve, the curve is stretched in a vertical direction to form the cylindrical light-refractionating portion (2), and the curve is negatively convex toward the optical axis.

4. The primary optical system for DMD illumination according to claim 2, characterized in that: The contour line of the parabolic cylinder reflecting portion (3) in a vertical plane is a parabola, and the parabola is stretched in a horizontal direction to form the parabolic cylinder reflecting portion (3).

5. The primary optical system for DMD illumination according to claim 4, characterized in that: The incident light rays sequentially pass through the cylindrical refraction light output portion (2) and the parabolic cylinder reflection portion (3) to converge to form a point, which is the focus of the parabola.

6. The primary optical system for DMD illumination according to claim 5, characterized in that: The distance between the focus of the light-refractionating portion (2) and the focus of the parabolic reflecting portion (3) is twice the focal length of the parabola.

7. The primary optical system for DMD illumination according to claim 5, characterized in that: The light refracting part and the reflecting part are movable and adjustable so as to control the focal distance therebetween.

8. The primary optical system for DMD illumination according to any one of claims 1 to 7, characterized in that: After the incident light passes through the light input portion (1) and the refracted light output portion in sequence, the propagation direction of the incident light in the vertical direction remains unchanged.

9. The primary optical system for DMD illumination according to any one of claims 1 to 7, characterized in that: The light input portion (1), the cylindrical refractive light output portion (2) and the parabolic reflective portion (3) are sequentially arranged in a positive direction along the optical axis.

10. A vehicle, characterized in that: A primary optical system for DMD illumination comprising the primary optical system according to any one of claims 1 to 9.

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