Optical system for improving lightening effect, vehicle lamp and vehicle

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an optical system capable of improving the lighting effect, a vehicle lamp and a vehicle, and the optical system capable of improving the lighting effect comprises an imaging part; the light diffusion unit is arranged at the light inlet end and / or the light outlet end of the imaging part, a stripe structure used for achieving light angle diffusion is arranged on the light diffusion unit, and the stripe structure comprises a plurality of cambered surfaces which are continuous in the horizontal direction. According to the optical system capable of improving the lightening effect, the light diffusion unit is arranged, a large projection angle in the horizontal direction can be achieved through a plurality of continuous cambered surfaces in the stripe structure, and the uniformity of projection to a road surface is better; in addition, the lighting effect and the static appearance are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to an optical system, a vehicle lamp and a vehicle for improving lighting effects. Background Art

[0002] Corner, fog, and low-beam assist functions typically require large horizontal angle projection. Common methods for this are to combine a light source with an imaging unit, or to combine an imaging unit with a primary optical unit. These two methods achieve large horizontal angle projection through left-right diffusion of the imaging unit and light distribution of the primary optical unit in the focal plane, respectively.

[0003] However, these two solutions lack a wide enough horizontal projection angle and poor uniformity at large angles. Furthermore, the lighting effect and appearance are also subpar. Furthermore, OEMs are increasingly concerned with the lighting uniformity of headlights and their static appearance when not lit, specifically, whether internal components are visible. Utility Model Content

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem of insufficient road projection angle in the prior art, the present invention provides an optical system, a headlight and a vehicle for improving the lighting effect, which can achieve a uniform road projection effect in the horizontal direction, and a large horizontal projection angle, and can also improve the lighting uniformity and static appearance.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an optical system for improving the lighting effect, including an imaging part; a light diffusion unit, the light diffusion unit is arranged at the light input end and / or the light output end of the imaging part, and the light diffusion unit is provided with a stripe structure for achieving light angle diffusion, and the stripe structure includes a plurality of arc surfaces continuous in the horizontal direction.

[0006] The utility model provides an optical system for improving lighting effects. By setting a light diffusion unit, a plurality of continuous arc surfaces in a stripe structure are utilized to achieve a large horizontal projection angle and better uniformity of projection onto the road surface.

[0007] Furthermore, the imaging unit includes a refraction unit and / or a reflection unit.

[0008] Furthermore, when the imaging unit is a refraction unit, the light diffusion unit includes a first grating film, the stripe structure is provided on the first grating film, and the first grating film is attached to the light input end and / or the light output end of the imaging unit.

[0009] Furthermore, the light diffusion unit includes a light incident surface and a light emitting surface that are parallel to each other, and a second grid film is provided on the light incident surface and / or the light emitting surface.

[0010] Furthermore, the light diffusion unit includes two transparent parts, which are arranged at the light input end and the light output end of the imaging part, and at least one of the transparent parts has a stripe structure.

[0011] Furthermore, the imaging portion has a focus or a focal line, the focal line is located in a horizontal plane, and the focal line is a straight line or a curve.

[0012] Furthermore, the imaging portion can form a cut-off line.

[0013] Furthermore, the diameter of the arc surface is inversely proportional to the diffusion angle of the light.

[0014] A vehicle lamp comprises the above-mentioned optical system for improving lighting effect.

[0015] A vehicle comprises the above-mentioned headlight.

[0016] The beneficial effects of the present utility model are:

[0017] 1. By setting up the continuous arc surface in the light diffusion unit, the angle of horizontal projection of light can be large, and the uniformity of projection onto the road surface is better.

[0018] 2. When a grille film is attached to the imaging unit or light diffusion unit, the stripe structure is very small. When the grille film is set on the grille film, the stripe structure is also very small. The shape of the stripe structure is almost difficult to see with the human eye. However, it has the required light diffusion function, so it can achieve a uniform lighting effect. Compared with the case without a grille film, it is more difficult for the human eye to clearly see the structure inside the lamp, so the static appearance is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the light path in a vertical plane when the imaging portion is a refractive unit in the first embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the light path in a vertical plane when the imaging part is a refractive unit in the second embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of an optical path in a vertical plane when an imaging portion is a refractive unit in the third embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the arc surface in the horizontal plane in the present invention.

[0024] Figure 5 It is a schematic diagram of the arc surface in the vertical plane in the present invention.

[0025] Figure 6 It is a light pattern diagram that reflects the light projection effect in the utility model.

[0026] Figure 7 It is a schematic diagram of the light path in the horizontal plane when the imaging part is a reflection unit in the fifth embodiment of the present invention.

[0027] Figure 8 It is a schematic diagram of the light path in a vertical plane when the imaging part is a reflection unit in the fifth embodiment of the present invention.

[0028] In the figure: 1, imaging part; 2, light diffusion unit; 21, first grille film; 22, light incident surface; 23, light emitting surface; 24, second grille film; 25, 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, a vehicle lamp and a vehicle for improving lighting effect.

[0032] Example 1:

[0033] Reference Figure 1 and Figures 4 to 6 An optical system for enhancing lighting effects includes an imaging unit 1 and a light diffusion unit 2. The light diffusion unit 2 is disposed at the light input and / or light output end of the imaging unit 1. The light diffusion unit 2 is provided with a striped structure for achieving light angle diffusion. The striped structure includes a plurality of horizontally continuous curved surfaces 25. By providing a plurality of horizontally continuous curved surfaces 25 on the light diffusion unit 2, the curved surfaces 25 can achieve a large horizontal projection angle. The multiple continuous curved surfaces 25 can also improve the uniformity of the light projected onto the road surface. The diameter of the curved surface 25 is inversely proportional to the light diffusion angle. That is, the smaller the diameter of the curved surface 25, the greater the light diffusion angle.

[0034] Specifically, imaging unit 1 includes a refractive element and / or a reflective element. That is, imaging unit 1 can be a refractive element, a reflective element, or a combination of both. Imaging unit 1 has a focal line or a single focal point. When imaging unit 1 has a focal line, it must lie within the horizontal plane and can be a straight line or a curve. For corner, fog light, and low-beam assist functions, a cutoff line is required. This can be achieved by simply placing an optical element with a cutoff line shape at the focal point or focal line of imaging unit 1.

[0035] When the imaging unit 1 is a refractive unit, the light diffusion unit 2 includes a first grating film 21 with a striped structure disposed thereon. The first grating film 21 is attached to the light input and / or light output end of the imaging unit 1. Because the first grating film 21 is very small, the striped structure, when disposed thereon, is also extremely small, making the shape of the striped structure almost indistinguishable to the human eye. However, it still provides the required light diffusion function, resulting in uniform lighting. Furthermore, compared to a lamp without a grating film, the structure within the lamp is less clearly discernible to the human eye, resulting in a better static appearance. The first grating film 21 is made of a flexible material to conform to the surface shape of the imaging unit 1. The first grating film 21 can be attached to the surface of the imaging unit 1 by adhesive. The material of the first grating film 21 can be polycarbonate (PC).

[0036] Example 2:

[0037] Reference Figure 2 The light diffusion unit 2 includes a parallel light incident surface 22 and a light emitting surface 23. These surfaces can be located on the optical unit in front of or behind the imaging unit 1. A second grille film 24 is attached to the light incident surface 22 and / or the light emitting surface 23. That is, at least one of the light incident surface 22 and the light emitting surface 23 is attached with the second grille film 24 to improve light diffusion and lighting uniformity. In this embodiment, the second grille film 24 can be made of PC.

[0038] Example 3:

[0039] Reference Figure 3 The light diffusion unit 2 comprises two transparent components, one located at the light input and one located at the light output of the imaging unit 1. At least one of the components has a striped structure. The vertical stripes on the surface of the transparent component are large and distinct, making them easily visible to the human eye. The transparent component can be made of materials such as PMMA or PC.

[0040] Example 4:

[0041] The difference from the second embodiment is that the second grating film 24 can be made of a hard material and placed as a separate optical component on the front or back side of the imaging unit 1. In this embodiment, the material of the second grating film 24 can be PC.

[0042] Embodiment 5:

[0043] When the imaging unit 1 is a reflective unit, its optical path diagram refers to Figure 7 and Figure 8 .

[0044] A vehicle lamp comprises the above-mentioned optical system for improving lighting effect.

[0045] A vehicle comprises the above-mentioned headlight.

[0046] 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 for improving lighting effects, characterized in that: include Imaging unit (1); A light diffusion unit (2) is provided at the light input end and / or the light output end of the imaging unit (1); the light diffusion unit (2) is provided with a stripe structure for achieving light angle diffusion; the stripe structure comprises a plurality of arc surfaces (25) continuous in the horizontal direction.

2. The optical system for improving lighting effect according to claim 1, characterized in that: The imaging part (1) comprises a refraction unit and / or a reflection unit.

3. The optical system for improving lighting effect according to claim 2, characterized in that: When the imaging part (1) is a refractive unit, the light diffusion unit (2) comprises a first grating film (21), the stripe structure is provided on the first grating film (21), and the first grating film (21) is adhered to the light input end and / or the light output end of the imaging part (1).

4. The optical system for improving lighting effect according to claim 1, characterized in that: The light diffusion unit (2) comprises a light incident surface (22) and a light emitting surface (23) which are parallel to each other, and a second grid film (24) is provided on the light incident surface (22) and / or the light emitting surface (23).

5. The optical system for improving lighting effect according to claim 1, wherein: The light diffusion unit (2) comprises two transparent parts, the two transparent parts are arranged at the light input end and the light output end of the imaging part (1), and at least one of the transparent parts has a stripe structure.

6. The optical system for improving lighting effect according to claim 1, wherein: The imaging part (1) has a focus or a focal line, the focal line is located in a horizontal plane, and the focal line is a straight line or a curve.

7. The optical system for improving lighting effect according to claim 6, characterized in that: The imaging portion (1) can form a light-dark cut-off line.

8. The optical system for improving lighting effects according to claim 1, wherein: The diameter of the arc surface (25) is inversely proportional to the diffusion angle of the light.

9. A vehicle lamp, characterized in that: An optical system for improving lighting effects comprising the optical system according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Including the vehicle light according to claim 9.

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