Thick-wall piece type headlamp optical system, lighting device and vehicle lamp

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to a thick-wall piece type headlamp optical system, a lighting device and a vehicle lamp, and the thick-wall piece type headlamp optical system comprises at least one light source; the optical coupling unit is used for integrating light rays emitted by the light source; a surface having a cut-off line shape and having a reflective or non-reflective function, the surface having the cut-off line shape reflecting a portion of the light from the optical coupling unit when having the reflective function; when the surface with the cut-off line shape does not have the reflection function, the surface with the cut-off line shape provides the cut-off line shape; and the imaging unit refracts and emits the light reflected by the surface with the cut-off line shape or from the optical coupling unit. According to the thick-wall piece type headlamp optical system, imaging of light in one direction can be achieved, the angle in the direction is larger than that in the other direction, the thick-wall piece type headlamp optical system is very suitable for a headlamp system, and light pattern uniformity is good.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to a thick-walled headlamp optical system, a lighting device and a vehicle lamp. Background Art

[0002] In general headlight systems, the light pattern formed by the imaging unit is isotropic, that is, the width is consistent from left to right and from top to bottom. For low beam and high beam, which require a light pattern that is wider from left to right and narrower from top to bottom, it takes more time to achieve and has poor uniformity. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the technical problems in the prior art, the utility model provides a thick-walled headlamp optical system, a lighting device and a vehicle lamp.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a thick-walled headlight optical system, including a light source, provided with at least one; an optical coupling unit, integrating the light emitted by the light source; a surface with a cutoff line shape, having a reflection or non-reflection function, when the surface with the cutoff line shape has a reflection function, it reflects part of the light from the optical coupling unit; when the surface with the cutoff line shape does not have a reflection function, the surface with the cutoff line shape provides a cutoff line shape; an imaging unit, refracting and emitting the light reflected by the surface with the cutoff line shape or coming from the optical coupling unit.

[0005] The thick-walled headlamp optical system of the utility model can realize imaging of light in a certain direction, and the angle in this direction is greater than that in another direction. It is very suitable for a front headlamp system and has good light pattern uniformity.

[0006] Furthermore, the optical coupling unit has a light convergence function to initially integrate the light; the surface with the cut-off line shape is aluminum-plated or internally totally reflected to have a reflection function.

[0007] Furthermore, when the surface having the cut-off line shape does not have a reflective function, the surface is painted black.

[0008] Furthermore, the contour line of the imaging unit in the horizontal plane is convex toward the positive direction of the optical axis, and the focus of the contour line is located at the system focus.

[0009] Furthermore, the imaging unit can image the light at the focus in a vertical or horizontal direction.

[0010] Furthermore, the optical coupling unit, the surface having the cut-off line shape and the imaging unit are integrally formed.

[0011] Furthermore, the optical coupling unit and the surface having the cut-off line shape are integrally formed, and the imaging unit, the optical coupling unit, and the surface having the cut-off line shape are integrally formed by connecting the imaging unit through a connecting member.

[0012] Furthermore, when the system is used for low beam broadening, the imaging unit adopts a stripe structure.

[0013] Furthermore, the light source, the light incident portion and the light coupling unit are provided in two groups and are arranged oppositely on two sides of the surface having the cut-off line shape.

[0014] A lighting device comprises the above-mentioned thick-walled headlamp optical system.

[0015] A vehicle lamp comprising the above-mentioned lighting device

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

[0017] 1. It can realize the imaging of light in a certain direction, and the angle in this direction is greater than that in another direction. It is very suitable for headlight systems and has good light uniformity;

[0018] 2. The optical coupling unit, the surface with a cutoff line shape and the imaging unit can be integrally formed, which reduces the dimension chain, has smaller tolerances and improves the stability of optical performance. 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 schematic structural diagram of the overall thick-walled headlamp optical system of the utility model.

[0021] Figure 2 It is a schematic diagram of the optical path of the thick-walled headlamp optical system in the utility model.

[0022] Figure 3 It is a schematic diagram of the application of the thick-walled headlamp optical system to a dual-light system in the utility model.

[0023] Figure 4 This is another schematic diagram of the utility model showing that the thick-walled headlamp optical system is applied to a dual-light system.

[0024] Figure 5 It is a schematic diagram of the structure of the thick-walled headlamp optical system in the horizontal plane in the utility model.

[0025] Figure 6 It is a structural schematic diagram of the second imaging unit of the thick-walled headlamp optical system in the utility model.

[0026] Figure 7It is an imaging light pattern diagram of the medium-thick-walled headlamp optical system of the utility model.

[0027] In the figure: 1. light source; 2. optical coupling unit; 3. surface with cutoff line shape; 4. imaging unit; 5. second imaging unit; 6. system focus. DETAILED DESCRIPTION

[0028] 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.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like 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 utility model 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 utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The utility model discloses a thick-walled headlamp optical system, a lighting device and a vehicle lamp.

[0031] Reference Figures 1 to 4 A thick-walled headlamp optical system, a lighting device and a vehicle lamp include a light source 1, a light coupling unit 2, a surface 3 with a cutoff line shape and an imaging unit 4. The light source 1 is used to emit light, and the light coupling unit 2 integrates the light emitted by the light source 1; the surface 3 with a cutoff line shape reflects part of the light from the light coupling unit 2, and the imaging unit 4 refracts and emits the light reflected by the surface 3 with a cutoff line shape or from the light coupling unit 2.

[0032] Specifically, the optical coupling unit 2 has a light converging function to preliminarily integrate the light, and may adopt a condenser, a reflector, a lens or other optical units capable of integrating light.

[0033] The contour line of the imaging unit 4 in the horizontal plane is convex toward the positive direction of the optical axis, and the focus of the contour line is located at the system focus 6. The contour line can be rotated around the horizontal axis at the focus to form the imaging unit, or can be formed by stretching or sweeping.

[0034] In another embodiment, the imaging unit 4 is capable of imaging the light at the focus in the vertical direction.

[0035] More specifically, the optical coupling unit 2, the surface 3 having a cut-off line shape and the imaging unit 4 can be integrally formed, which reduces the dimension chain, makes the assembly tolerance smaller, and improves the stability of the optical performance.

[0036] In another embodiment, the optical coupling unit 2 and the surface 3 having a cut-off line shape may be integrally formed, and the imaging unit 4 is connected to the integral part formed by the optical coupling unit 2 and the surface 3 having a cut-off line shape through a connecting member.

[0037] In addition, when the system is used for low beam widening, the imaging unit 4 can adopt a stripe structure to increase the width in the horizontal direction and improve the uniformity of road lighting.

[0038] Further, refer to Figure 3 and Figure 4 The light source 1 and the light coupling unit 2 are each provided with two groups, and are relatively arranged on both sides of the surface 3 having a cut-off line shape, thereby adapting to the dual-light system of the headlight, and the light of the two groups of light sources 1 and the light coupling unit 2 are both reflected by a surface 3 having a cut-off line shape.

[0039] The surface 3 with the cut-off line shape can be plated with aluminum to have a reflective function, or it can have a reflective function through internal total reflection, where the internal total reflection means that the surface 3 with the cut-off line shape itself meets the total reflection condition, that is, the incident angle is greater than or equal to the critical angle of total reflection. The surface 3 with the cut-off line shape can also have no reflective function and only provide a cut-off line shape, in which case its surface is painted black.

[0040] Reference Figure 5 , is a schematic diagram of the structure of the thick-walled headlight optical system in the horizontal plane, representing that one imaging unit can correspond to more than one optical coupling unit 2 and light source 1, and the surface with the cutoff line shape can be in the horizontal plane or in the vertical plane. When in the vertical plane, the surface with the cutoff line shape does not have the function of reflection, and only provides a shape with a light and dark cutoff line.

[0041] Reference Figure 6The thick-walled headlight optical system also includes a second imaging unit 5, which can image the light at the system focus 6 in another direction, and the imaging direction is perpendicular to the imaging direction of the imaging unit 4.

[0042] Working principle: This system can realize the imaging of light in a certain direction, and the angle in this direction is greater than that in another direction. It is very suitable for headlight systems and has good light pattern uniformity.

[0043] A lighting device comprises the above-mentioned thick-walled headlamp optical system.

[0044] A vehicle lamp comprises the above-mentioned lighting device.

[0045] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A thick-walled headlamp optical system, characterized in that: include A light source (1) is provided with at least one; An optical coupling unit (2) integrates the light emitted by the light source (1); The surface (3) having a cut-off line shape has a reflective or non-reflective function, and when the surface (3) having a cut-off line shape has a reflective function, it reflects part of the light from the optical coupling unit (2); When the surface (3) having a cut-off line shape does not have a reflection function, the surface (3) having a cut-off line shape provides a cut-off line shape; An imaging unit (4) is configured to emit light reflected by a surface (3) having a cutoff line shape or refracted from the light coupling unit (2), wherein a contour line of the imaging unit (4) in a horizontal plane is convex toward the positive direction of the optical axis; A second imaging unit (5), wherein the second imaging unit (5) images the light at the system focus (6) in another direction, and the imaging direction is perpendicular to the imaging direction of the imaging unit (4).

2. The thick-walled headlamp optical system according to claim 1, characterized in that: The optical coupling unit (2) has a light convergence function to perform preliminary integration of light; The surface (3) having the cut-off line shape is aluminum-plated or internally totally reflected so as to have a reflection function.

3. The thick-walled headlamp optical system according to claim 1, characterized in that: When the surface (3) having the cut-off line shape does not have a reflective function, the surface is painted black.

4. The thick-walled headlamp optical system according to claim 1, characterized in that: The contour line of the imaging unit (4) in the horizontal plane is convex toward the positive direction of the optical axis, and the focus of the contour line is located at the system focus (6); the imaging unit (4) is capable of imaging the light at the focus in the vertical or horizontal direction.

5. The thick-walled headlamp optical system according to claim 3, characterized in that: The optical coupling unit (2), the surface (3) having a cut-off line shape, and the imaging unit (4) are integrally formed.

6. The thick-walled headlamp optical system according to claim 1, characterized in that: The optical coupling unit (2) and the surface (3) having a cutoff line shape are integrally formed, and the imaging unit (4) is connected to the integral piece formed by the optical coupling unit (2) and the surface (3) having a cutoff line shape via a connecting piece.

7. The thick-walled headlamp optical system according to claim 1, characterized in that: When the system is used for low beam broadening, the imaging unit (4) adopts a stripe structure.

8. The thick-walled headlamp optical system according to claim 1, characterized in that: The light source (1) and the light coupling unit (2) are provided in two groups and are arranged oppositely on two sides of a surface (3) having a cut-off line shape.

9. A lighting device, characterized in that: A thick-walled headlamp optical system comprising the thick-walled headlamp optical system as described in any one of claims 1 to 8.

10. A vehicle lamp, characterized in that: A lighting device comprising the lighting device described in claim 9.

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