Optical system capable of realizing large-angle projection and vehicle lamp

Abstract

The utility model relates to the technical field of car lamps, in particular to an optical system capable of achieving large-angle projection and a car lamp, and the optical system comprises a first reflecting unit, a second reflecting unit, a third reflecting unit and a fourth reflecting unit, the second reflection unit is positioned in the light emitting direction of the first reflection unit and is used for reflecting the light from the first reflection unit; and the emergent light refraction unit is provided with a vertical stripe structure and is used for performing angle diffusion on the light rays from the second reflection unit along a certain direction. According to the optical system capable of realizing large-angle projection, the light emitted by the light source is subjected to primary shaping through the first reflection unit, and then the light of the focal plane of the optical system is distributed in the vertical direction by the second reflection unit for imaging; and finally, the emergent light refraction unit performs angle diffusion on the light from the second reflection unit along a certain direction, so that large-angle projection is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to an optical system and a vehicle lamp capable of realizing large-angle projection. Background Art

[0002] Conventional optical solutions for widening, corner, and fog lights typically utilize a combination of LEDs and lenses, which often suffer from low optical efficiency. Furthermore, an increasing number of customers require subjective lighting uniformity in addition to objective performance. Direct LED illumination, however, can produce noticeable graininess and poor lighting uniformity when viewed with the human eye. Utility Model Content

[0003] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides an optical system capable of achieving large-angle projection.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an optical system capable of achieving large-angle projection, comprising a first reflection unit for performing primary shaping on the light emitted by a light source; a second reflection unit located in the light-emitting direction of the first reflection unit and for reflecting the light from the first reflection unit; and a light-emitting refraction unit provided with a vertical stripe structure for angularly diffusing the light from the second reflection unit along a certain direction.

[0005] The utility model provides an optical system capable of achieving large-angle projection. The first reflection unit performs primary shaping on the light emitted by the light source. Then the second reflection unit distributes the light on the focal plane of the optical system in the vertical direction for imaging. Finally, the light output refraction unit diffuses the light from the second reflection unit along a certain direction to achieve large-angle projection.

[0006] Furthermore, the light-exiting refraction unit comprises a light-incoming portion and a light-exiting portion, and at least one of the light-incoming portion and the light-exiting portion is provided with a vertical stripe structure.

[0007] Furthermore, the vertical stripe structure includes a plurality of continuous curved surfaces, and the plurality of curved surfaces are arranged along the light diffusion direction of the light-emitting refraction unit.

[0008] Furthermore, a grid soft film is attached to the surface of the light emitting and refractive unit, and the grid soft film has a vertical stripe structure.

[0009] Furthermore, the light emitting refraction unit is a hard grid film with a certain thickness, and the grid film has a vertical stripe structure.

[0010] Furthermore, the first reflecting unit emits light in a vertical direction, and the second reflecting unit and the first reflecting unit are arranged in the vertical direction.

[0011] Furthermore, the second reflection unit has the function of imaging the light distribution on the focal plane of the optical system in the vertical direction.

[0012] Furthermore, a vertical contour line of the second reflecting unit has a parabola.

[0013] Furthermore, a section line between the second reflecting unit and the horizontal plane is a straight line, a curve or an arc.

[0014] Furthermore, the contour lines of the light-emitting refraction unit in the horizontal plane are parallel curves or straight lines.

[0015] A vehicle lamp comprises the above-mentioned optical system capable of achieving large-angle projection.

[0016] The beneficial effects of the present invention are:

[0017] 1. The first reflective unit performs primary shaping on the light emitted by the light source, and then the second reflective unit distributes the light on the focal plane of the optical system in the vertical direction for imaging. Finally, the light from the second reflective unit is diffused in a certain direction by the light output refraction unit to achieve wide-angle projection.

[0018] 2. The angle of the light pattern in the up and down directions can be changed by adjusting the focal length of the second reflective unit according to needs;

[0019] 3. Compared with conventional LED direct projection, in this solution, most of the light emitted by the light source can be received by the first reflection unit, and then used by the second reflection unit and the light refraction unit;

[0020] 4. Since the principle of this solution is to perform light distribution on the focal plane of the optical system, the light seen by the human eye comes from the second refraction unit rather than the light source, so the graininess will be much weaker than that of LED direct projection;

[0021] 5. The first reflecting unit cooperates with the second reflecting unit, so that the size of this solution in the driving direction is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic structural diagram of an overall optical system capable of achieving large-angle projection in the present invention.

[0024] Figure 2 It is a light propagation diagram of the solution embodied in the utility model in a vertical plane.

[0025] Figure 3 It is a schematic diagram showing that the cross-section line between the second reflection unit and the horizontal plane is a curve in the present invention.

[0026] Figure 4 This is a schematic diagram showing that the section line between the second reflection unit and the horizontal plane is a straight line in the present invention.

[0027] Figure 5 This is the light pattern of this solution in the utility model.

[0028] In the figure: 1, first reflection unit; 2, second reflection unit; 3, light output refraction unit; 31, curved surface. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The utility model discloses an optical system and a vehicle lamp capable of realizing large-angle projection.

[0032] Reference Figures 1 to 5An optical system capable of achieving large-angle projection includes a light source, a first reflection unit 1, a second reflection unit 2, and a light-emitting refractive unit 3. The light source is located at the focus of the first reflection unit 1. The first reflection unit 1 is used to perform primary shaping on the light emitted by the light source, and the first reflection unit 1 emits light in a vertical direction. The second reflection unit 2 is arranged vertically with the first reflection unit 1, and the second reflection unit 2 is located in the light-emitting direction of the first reflection unit 1, and is used to reflect the light from the first reflection unit 1. The second reflection unit 2 has the function of imaging the light distribution on the focal plane of the optical system in the vertical direction. The light-emitting refractive unit 3 has a light input portion and a light output portion. A vertical stripe structure is provided on at least one of the light input portion and the light output portion. The vertical stripe structure is used to diffuse the light from the second reflection unit 2 in a certain direction.

[0033] During operation, the first reflecting unit 1 performs primary shaping on the light emitted by the light source, and then the second reflecting unit 2 distributes the light on the focal plane of the optical system in the vertical direction for imaging. Finally, the light from the second reflecting unit 2 is diffused in the horizontal direction by the light output refraction unit 3 to achieve large-angle projection.

[0034] Specifically, in the vertical direction, the outline of the second reflective unit 2 comprises a parabola, which extends along the normal direction to form the second reflective unit 2. The vertical angle of the light pattern can be modified as needed by adjusting the focal length of the second reflective unit 2. A larger focal length results in a smaller vertical angle. Furthermore, the second reflective unit 2 can be formed not only by stretching, but also by rotation and sweeping, meaning that the intersection with the horizontal plane can be a straight line, a curve, or an arc.

[0035] More specifically, in the horizontal plane, the contour lines of the light-emitting and refractive units 3 can be parallel curves or parallel straight lines. The contour lines of the light-emitting and refractive units 3 are arranged along the horizontal direction.

[0036] The vertical stripe structure includes a plurality of continuous curved surfaces 31 , which are arranged along the contours of the light-emitting surface and / or the light-incident surface of the light-emitting refraction unit in the horizontal plane.

[0037] Example 2:

[0038] The difference from Example 1 is that a grille soft film is attached to the surface of the light emitting and refractive unit, and the vertical stripe structure is provided on the grille soft film.

[0039] Example 3:

[0040] The difference from Example 1 is that the light-emitting refraction unit is a hard grid film with a certain thickness, and the vertical stripe structure is provided on the grid film.

[0041] A vehicle lamp comprises the above-mentioned optical system capable of achieving large-angle projection.

[0042] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. An optical system capable of achieving large-angle projection, characterized in that: include A first reflecting unit (1) is used for performing primary shaping on the light emitted by the light source; A second reflecting unit (2) is located in the light emitting direction of the first reflecting unit (1) and is used to reflect light from the first reflecting unit (1); The light-emitting refraction unit (3) is provided with a vertical stripe structure and is used for angularly diffusing the light from the second reflection unit (2) in a certain direction.

2. The optical system capable of achieving large-angle projection according to claim 1, characterized in that: The light exiting refraction unit (3) comprises a light entrance portion and a light exit portion, and at least one of the light entrance portion and the light exit portion is provided with a vertical stripe structure.

3. The optical system capable of achieving large-angle projection according to claim 1, characterized in that: The vertical stripe structure comprises a plurality of continuous curved surfaces (31), and the plurality of curved surfaces (31) are arranged along the light diffusion direction of the light-emitting refraction unit (3).

4. The optical system capable of achieving large-angle projection according to claim 1, characterized in that: A grid soft film is attached to the surface of the light emitting refraction unit, and the grid soft film has a vertical stripe structure.

5. The optical system capable of achieving large-angle projection according to claim 1, wherein: The light-emitting refraction unit is a hard grid film with a certain thickness, and the grid film has a vertical stripe structure.

6. The optical system capable of achieving large-angle projection according to claim 5, wherein: The first reflecting unit (1) emits light in a vertical direction, and the second reflecting unit (2) and the first reflecting unit (1) are arranged in a vertical direction; The second reflecting unit (2) has the function of imaging the light distribution on the focal plane of the optical system in the vertical direction.

7. The optical system capable of achieving large-angle projection according to claim 1, wherein: The vertical contour of the second reflecting unit (2) has a parabola.

8. The optical system capable of achieving large-angle projection according to claim 1, wherein: The section line between the second reflecting unit (2) and the horizontal plane is a straight line, a curve or an arc.

9. The optical system capable of achieving large-angle projection according to claim 1, wherein: The contour lines of the light-emitting refraction unit (3) in the horizontal plane are parallel curves or straight lines.

10. A vehicle lamp, characterized in that: An optical system capable of achieving large-angle projection comprising the optical system described in any one of claims 1-9.

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