Optical system, vehicle lamp and vehicle

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an optical system, a vehicle lamp and a vehicle, the optical system comprises a refraction unit, a reflection unit and a light diffusion unit, and the refraction unit comprises a light inlet unit and a light outlet unit; in a vertical plane perpendicular to the driving direction, the contour line of the refraction unit is provided with a first focal point; in a vertical plane parallel to the driving direction, the contour line of the reflection unit comprises a parabolic segment, and a second focus of the parabolic segment coincides with a first focus of the refraction unit. The contour line of the reflection unit in the horizontal plane is a straight line or a curve; the light diffusion unit has a function of diffusing the light from the reflection unit in at least one direction. The refraction unit and the reflection unit image light distribution of the first focus or light distribution near the first focus, uniform lighting in the horizontal direction and the vertical direction is achieved, and finally large-angle projection and uniform road illumination are achieved through the light diffusion function.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car light, especially to an optical system, car light and vehicle. BACKGROUND

[0002] It is very difficult to simultaneously realize large-angle uniform projection and uniform lighting effect for the optical system of headlamps and signal lamps, so a new optical system is needed to simultaneously realize large-angle uniform projection and uniform lighting effect. SUMMARY

[0003] The utility model provides an optical system, car light and vehicle to solve the technical problems in the prior art.

[0004] The utility model discloses a kind of optical systems, including refracting unit, reflecting unit and light diffusion unit, the refracting unit includes light inlet unit and light outlet unit;In vertical plane perpendicular to driving direction, the profile line of the refracting unit has first focus point;In vertical plane parallel to driving direction, the profile line of the reflecting unit contains parabolic segment, the second focus point of the parabolic segment coincides with the first focus point of refracting unit;The profile line of the reflecting unit in horizontal plane is straight line or curve;The light diffusion unit has the function of at least one direction light diffusion from reflecting unit;The refracting unit and reflecting unit are arranged along the light outlet direction of refracting unit, reflecting unit and light diffusion unit are arranged along the light outlet direction of reflecting unit.

[0005] The utility model discloses a kind of optical systems, refracting unit and reflecting unit are imaged to the light distribution of first focus point or first focus point vicinity respectively, finally realize large-angle projection and road illumination uniformity by light diffusion function.

[0006] Further, the refracting unit, reflecting unit and light diffusion unit are each provided with at least one, and at least one refracting unit corresponds to one reflecting unit.

[0007] Further, the profile line focal length and focus position of different reflecting units are same or different.

[0008] Further, the reflecting unit surface is attached with pattern, and the pattern is arranged along the profile line in different plane.

[0009] Further, in vertical plane parallel to driving direction, the refracting unit section line contains part concentric arc segment.

[0010] Further, the cross section of the refractive unit is a Fresnel lens, a plano-convex lens or a condenser; when there are multiple refractive units, the refractive units are arranged along the profile line shape of the reflective unit in the horizontal plane.

[0011] Further, in the vertical plane parallel to the driving direction, the cross section of the refractive unit contains a partial circular arc.

[0012] Further, the reflective unit and the refractive unit are an integrated transparent piece, and the reflective unit has a certain reflectivity through internal total reflection or external reflection film coating.

[0013] Further, a light diffusion unit is arranged in the light emitting direction of the reflective unit, and the light diffusion unit and the reflective unit and the refractive unit are an integrated transparent piece.

[0014] A vehicle lamp comprising the optical system.

[0015] A vehicle comprising the vehicle lamp.

[0016] The beneficial effect of the present application is that the refractive unit and the reflective unit respectively image the light distribution around the first focal point or the first focal point, realize uniform lighting in the horizontal and vertical directions, and finally realize large-angle projection and uniform road lighting through the light diffusion function. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in combination with the drawings and examples.

[0018] Figure 1 is a structural schematic diagram of an optical system in the present application.

[0019] Figure 2 is a schematic diagram of the present application reflecting the light propagation in the vertical plane.

[0020] Figure 3 is a schematic diagram of the present application reflecting that the cross section of the refractive unit is a Fresnel lens.

[0021] Figure 4 is a schematic diagram of the present application reflecting that the profile line of the refractive unit in the vertical plane perpendicular to the X direction is a plurality of Fresnel lenses.

[0022] Figure 5 is a schematic diagram of the present application reflecting that the refractive unit, the reflective unit and the light diffusion unit are an integrated transparent piece.

[0023] Figure 6 is a schematic diagram of the present application reflecting that the profile line of the refractive unit contains concentric circular arcs.

[0024] In the figure: 1, refractive unit; 2, reflecting unit; 3, light diffusion unit; F, first focus. DETAILED DESCRIPTION

[0025] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0026] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the utility model, it is explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] The utility model discloses an optical system, vehicle lamp and vehicle.

[0028] Embodiment 1:

[0029] Reference Figure 1 And Figure 2 An optical system includes a refractive unit 1, a reflecting unit 2 and a light diffusion unit 3, the refractive unit 1 includes a light inlet unit and a light outlet unit.

[0030] Reference Figures 2 to 4, the driving direction is defined as X direction, in the vertical plane perpendicular to X direction, the profile of the refractive unit 1 has a first focus F, the profile of the refractive unit 1 can be plano-convex, convex-plano, bi-convex, condenser or Fresnel lens. In the vertical plane parallel to X direction, the profile of the refractive unit 1 contains concentric arcs, i.e. the profile of the refractive unit 1 can be formed by rotating the profile along the horizontal axis through the focus F. When there are multiple refractive units 1, the refractive units 1 are arranged along the profile of the reflective unit 2 in the horizontal plane.

[0031] In the vertical plane parallel to X direction, the profile of the reflective unit 2 contains a parabolic segment, the second focus of the parabolic segment coincides with the first focus F of the refractive unit 1. The profile of the reflective unit 2 in the horizontal plane is a straight line or a curve, the reflective unit 2 can be formed by stretching the profile or sweeping along the curve in the horizontal plane. It is particularly noted that the stretching direction of the reflective unit 2 can be deviated from the horizontal direction by a certain angle, i.e. the light-out direction of the reflective unit 2 can be deviated from the X axis by a certain angle.

[0032] The refractive unit 1 and the reflective unit 2 are arranged along the light-out direction of the refractive unit 1, the reflective unit 2 and the light diffusion unit 3 are arranged along the light-out direction of the reflective unit 2. The light diffusion unit 3 has the function of diffusing the light from the reflective unit 2 in at least one direction. When applied to the optical system of the headlamp, such as corner lamp, fog lamp, low beam auxiliary function, the diffusion function of the light diffusion unit 3 is mainly the diffusion in the horizontal direction, the light diffusion unit 3 can be provided with vertical stripes to have the horizontal diffusion function, the light diffusion unit 3 can also be a grating film with vertical stripes, the grating film can be a soft film or a hard film. When applied to the signal lamp, the diffusion function of the light diffusion unit 3 has at least one direction of diffusion, the stripes can be vertical stripes, horizontal stripes, corn patterns, etc.

[0033] The surface of the reflective unit can be provided with patterns arranged along the profiles in different planes. The patterns can be vertical patterns arranged along the profile in the horizontal direction, at this time, the reflective unit has the diffusion function in the horizontal direction; in addition, the patterns can also be similar to square, at this time the reflective unit has the light diffusion function in each direction.

[0034] In the vertical plane perpendicular to the X direction, the light rays emitted from the first focal point F or nearby pass through the refractive unit 1 and are emitted in parallel or approximately parallel to each other, and in the same size, the brightness is almost the same; in the vertical plane parallel to the X direction, the light rays emitted from the first focal point F pass through the refractive unit 1 almost without changing the propagation direction, and after reaching the reflecting unit 2, in the same equal size, the brightness of the emitted light is almost the same. Therefore, the system can realize uniform lighting in the vertical and horizontal directions, and finally further improve the uniformity of the lighting through the light diffusion unit 3, thereby realizing large-angle projection and uniform illumination.

[0035] It should be noted that at least one refractive unit 1, at least one reflecting unit 2 and at least one light diffusion unit 3 are provided, and at least one refractive unit 1 corresponds to one reflecting unit 2.

[0036] Embodiment 2:

[0037] The difference from embodiment 1 is that the optical system can be composed of reflecting units 2 with different focal points and different focal lengths, and each reflecting unit 2 corresponds to a refractive unit 1 with the same focal point position, but the focal lengths of different refractive units 1 corresponding to the same reflecting unit 2 can be different.

[0038] Embodiment 3:

[0039] The difference from embodiment 1 is that, referring to Figure 5 and Figure 6 , the refractive unit 1 and the reflecting unit 2 can be integrally formed, that is, the cross section of the refractive unit 1 in the vertical plane parallel to the X direction contains concentric circular arcs, and the profile in the vertical plane perpendicular to the X direction still has the first focal point F.

[0040] When the refractive unit 1 and the reflecting unit 2 are integrally transparent, the reflecting unit 2 can have reflectivity through internal total reflection or a reflective film on the outer surface.

[0041] In addition, the light diffusion unit 3 can also be integrally formed with the reflecting unit 2 and the refractive unit 1; or the light diffusion unit 3 is an independent piece, and a refractive light emitting surface is additionally provided in the light emitting direction of the reflecting unit 2, which is integrally formed with the reflecting unit 2 and the refractive unit 1.

[0042] It should be noted that in the vertical plane perpendicular to the X direction, in addition to the collimation of the light emitted from the first focal point F, the refractive unit 1 can also make the received light have a certain diffusion function, and after passing through the refractive unit 1, the light rays are at a certain angle (the angle is designed according to the functional requirements).

[0043] A vehicle lamp comprising the optical system described above.

[0044] A vehicle comprising the vehicle lamp described above.

[0045] With the above ideal embodiment according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. An optical system characterized by comprising: The optical system comprises a refractive unit (1), a reflecting unit (2) and a light diffusion unit (3), the refractive unit (1) comprises an entrance light unit and an exit light unit; In a vertical plane perpendicular to the driving direction, the profile line of the refractive unit (1) has a first focal point (F); In a vertical plane parallel to the driving direction, the profile line of the reflecting unit (2) comprises a parabolic segment, the second focal point of the parabolic segment coincides with the first focal point (F) of the refractive unit (1); the profile line of the reflecting unit (2) in the horizontal plane is a straight line or a curve; The light diffusion unit (3) has the function of diffusing light from the reflecting unit (2) in at least one direction; The refractive unit (1) and the reflecting unit (2) are arranged along the exit light direction of the refractive unit (1), and the reflecting unit (2) and the light diffusion unit (3) are arranged along the exit light direction of the reflecting unit (2).

2. An optical system according to claim 1, wherein The refractive unit (1), the reflecting unit (2) and the light diffusion unit (3) are each provided with at least one, and at least one of the refractive units (1) corresponds to one of the reflecting units (2); The focal length and the focal point position of the profile lines of different reflecting units (2) are the same or different.

3. An optical system according to claim 1, wherein The reflecting unit surface is attached with a pattern, and the pattern is arranged along the profile line in different planes.

4. An optical system according to claim 1, wherein In a vertical plane parallel to the driving direction, the cross section of the refractive unit (1) comprises a partial concentric circular arc segment.

5. An optical system as claimed in claim 1, characterized in that The cross section of the refractive unit (1) is a Fresnel lens, a plano-convex lens or a condenser; When there are multiple refractive units (1), the refractive units (1) are arranged along the shape of the profile line of the reflecting unit (2) in the horizontal plane.

6. An optical system as claimed in claim 1, characterized in that In a vertical plane parallel to the driving direction, the cross section of the refractive unit (1) comprises a partial circular arc.

7. An optical system as claimed in claim 6, characterized in that The reflecting unit (2) and the refractive unit (1) are an integral transparent piece, and the reflecting unit (2) has a certain reflectivity by internal total reflection or external reflection film coating.

8. An optical system as claimed in claim 7, characterized in that A light diffusion unit (3) is arranged in the exit light direction of the reflecting unit (2), and the light diffusion unit (3), the reflecting unit (2) and the refractive unit (1) are an integral transparent piece.

9. A vehicle lamp characterized by The optical system comprises the optical system of any one of claims 1-8.

10. A vehicle characterized by comprising: The vehicle lamp comprises the vehicle lamp of claim 9.

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