Lens unit, vehicle lamp and vehicle suitable for slanted styling

Abstract

The utility model discloses a kind of lens unit suitable for inclined modeling, vehicle light and vehicle, the lens unit suitable for inclined modeling includes: light inlet and light outlet;The light inlet is in the light emitting direction of light source, the light inlet is free curved surface with light source center and virtual focus, light source is located at the light source center of light inlet;The light inlet presents virtual image to light source in deviating light source optical axis direction;The light outlet is curved surface with focus, the focus of light outlet coincides with the virtual focus of light inlet;The optical axis direction of light outlet is consistent with the direction required by function, the utility model has the advantage of improving the lighting uniformity of inclined modeling.

Description

Technical Field

[0001] This utility model belongs to the field of automotive lighting technology, specifically relating to tilted automotive lights, and more particularly to a lens unit, automotive light, and vehicle suitable for tilted designs. Background Technology

[0002] In the field of automotive lighting, when existing angled designs utilize lens solutions for some functions, the LED chips of multiple lens units need to be mounted on the same PCB board. Then, the PCB board is placed along the styling direction of the headlight, such as... Figure 1 As shown, this configuration causes the optical axis of the LED chip to be out of parallel with the desired light output direction of the lens unit. As a result, the light distribution after adjustment by the lens unit is stronger near the optical axis of the LED chip and weaker in other areas, which cannot meet the requirement of uniform illumination. In order to solve this problem, a lens unit, headlight and vehicle with a tilted shape is proposed. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, this utility model proposes a lens unit, a headlight, and a vehicle suitable for tilted shapes. The lens unit suitable for tilted shapes has the advantage of improving the illumination uniformity of tilted shapes.

[0005] According to an embodiment of the present invention, a lens unit suitable for a tilted shape includes: an incident light section and an exiting light section; the incident light section is located in the light-emitting direction of the light source, and the incident light section is a freeform surface having a light source center and a virtual focal point, with the light source located at the light source center of the incident light section; the incident light section projects a virtual image of the light source in a direction deviating from the light source optical axis; the exiting light section is a curved surface with a focal point, and the focal point of the exiting light section coincides with the virtual focal point of the incident light section; the optical axis direction of the exiting light section is consistent with the direction required for the function.

[0006] According to one embodiment of the present invention, the lens unit corresponds to a light source of at least one color.

[0007] According to one embodiment of the present invention, the material of the light-incident part is PC or PMMA.

[0008] According to one embodiment of the present invention, the material of the light-emitting part is PC or PMMA.

[0009] According to one embodiment of the present invention, the light-emitting surface of the light-emitting part is provided with a diffusion pattern.

[0010] According to one embodiment of the present invention, the light-incident part and the light-exit part are integrally formed.

[0011] A vehicle headlight, comprising a lens unit suitable for a tilted design as described above.

[0012] According to one embodiment of the present invention, the number of lens units is multiple, and the multiple lens units are staggered front and back along the tilt angle of the shape.

[0013] According to one embodiment of the present invention, a PCB board is included, each of the lens units corresponds to a light source, and a plurality of the light sources are disposed on the PCB board.

[0014] A vehicle including the aforementioned headlights.

[0015] The beneficial effects of this utility model are that the light-incident part adjusts the angle of the light emitted by the light source to make it close to the optical axis of the light-emitting part, and focuses the backward extension of the refracted light to the virtual focal point F', so that the light-emitting part, which coincides with the virtual focal point F', can collimate the received light. The light-incident part first forms a virtual image of the light source in a direction deviating from the optical axis of the light source, and then the light-emitting part forms an image of the virtual image. That is, the lens unit ultimately transforms the originally deviated LED light source into the required optical axis direction, and finally achieves the effect of improving the uniformity of illumination.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments with accompanying drawings, in which: Figure 1 This is a schematic diagram of a tilted design; Figure 2 This is a schematic diagram showing the relative positions of the light-incident section and the light-exit section of this utility model; Figure 3 This is a schematic diagram of the focusing position of the backward extension line of the light rays after refraction through the incident light part of this utility model; Figure 4 This is a schematic diagram of the light path of the lens unit of this utility model; Figure 5 This is a schematic diagram showing the relative positions of multiple lens units of this utility model; Figure label: 1. Light entry part; 2. Light exit part; 31. Light source. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention applicable to a tilted lens unit, headlight, and vehicle.

[0023] like Figures 1-5 As shown, the lens unit suitable for tilted shapes according to an embodiment of the present invention includes: a light-incident section 1 and a light-exiting section 2; the light-incident section 1 is located in the light-emitting direction of the light source 31, and the light-incident section 1 is a freeform surface having a light source center O and a virtual focal point F'. The light source 31 is located at the light source center O of the light-incident section 1, which can be the center of the light source or near the center of the light source; the light-incident section 1 projects the light source into a virtual image in a direction deviating from the optical axis of the light source 31; that is, the optical axis of the light-exiting section 2 is located between the line L connecting the light source center O and the virtual focal point F' and the optical axis of the light source 31. The light-exiting section 2 is a curved surface with a focal point, and the focal point of the light-exiting section 2 coincides with the virtual focal point F' of the light-incident section 1; the optical axis direction of the light-exiting section 2 is consistent with the direction required for the function.

[0024] In this embodiment, as Figure 3-4 As shown, the light-emitting part 2 is located in the light-emitting direction of the light-incident part 1. After the light emitted by the light source 31 is refracted by the light-incident part 1, the backward extension of the refracted light converges at the virtual focal point F'. The light-incident part 1 transforms the light source 31 into a virtual image in a direction deviating from the optical axis of the light source 31. Since the focal point of the light-emitting part 2 coincides with the virtual focal point of the light-incident part 1, the light-emitting part 2 collimates and emits the light at the virtual focal point F'. This is equivalent to the original optical axis of the LED light source 31 being deviated from the light-emitting optical axis. After passing through the light-incident part 1 and the light-emitting part 2, the deviated direction is transformed into the desired direction. This is equivalent to a light source with an optical axis parallel to the optical axis of the light-emitting part 2 passing through the lens unit. Therefore, the final lighting result is relatively uniform.

[0025] The lens unit corresponds to a light source 31 of at least one color.

[0026] The light source 31 corresponding to the lens unit is a light source 31 of multiple colors, that is, the light-incident part 1 is composed of multiple light-incident units with different light source centers but a common virtual focal point, and the light source 31 of each color is located at the light source center of the corresponding light-incident unit; at this time, the virtual focal point of the light-out part 2 still coincides with the virtual focal point of the light-incident part 1; in addition, when corresponding to multiple light source 31, the light-incident part 1 may also have only one light source center, that is, one of the light source centers of multiple colors is located at the light source center of the light-incident part, and the others are out of focus.

[0027] The light-receiving part 1 is made of transparent materials such as PC, PMMA, PMMI, and glass.

[0028] The material of the light-emitting part 2 is transparent material such as PC, PMMA, PMMI, and glass.

[0029] When the light-entry part 1 and the light-exit part 2 are separate entities, the light-entry part 1 and the light-exit part 2 can be made of the same material or a combination of different materials.

[0030] The light-emitting surface of the light-emitting part 2 is provided with a diffusion pattern. The diffusion pattern can be integrally formed with the light-emitting part 2 or set separately from the light-emitting part 2.

[0031] The light-incident section 1 and the light-exit section 2 can be integrally molded to avoid the focusing step in subsequent assembly and improve assembly convenience. In this case, the light-incident section 1 and the light-exit section 2 are made of the same material to facilitate manufacturing.

[0032] A vehicle headlight, comprising any one of a lens unit adapted to a tilted design.

[0033] There are multiple lens units, which are staggered front and back along the tilt angle of the shape.

[0034] It also includes a PCB board, with each lens unit corresponding to a light source 31, and multiple light sources 31 are all located on the PCB board.

[0035] In this embodiment, as Figure 1 , 5 As shown, the lens units are staggered front to back to achieve an overall tilted design. Figure 1 As shown, multiple light sources 31 are located on the same plane, so multiple light sources 31 can be mounted on a PCB board, and then the PCB board is placed at an inclined angle, with the optical axis of the light source 31 being parallel or approximately parallel to the normal of the inclined shape.

[0036] A vehicle including the aforementioned headlights.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lens unit suitable for tilted shapes, characterized in that, include: The light-incident part (1) is located in the light-emitting direction of the light source (31). The light-incident part (1) is a free-form surface with a light source center and a virtual focal point. The light source (31) is located at the light source center of the light-incident part (1). The light-incident part (1) presents the light source as a virtual image in a direction that deviates from the optical axis of the light source (31). The light-emitting part (2) is a curved surface with a focal point, and the focal point of the light-emitting part (2) coincides with the virtual focal point of the light-entry part (1); The optical axis direction of the light-emitting part (2) is consistent with the direction required for the function.

2. The lens unit suitable for tilted shapes according to claim 1, characterized in that, The lens unit corresponds to a light source of at least one color (31).

3. The lens unit suitable for tilted shapes according to claim 1, characterized in that, The material of the light-emitting part (2) is PC, PMMA, PMMI, or glass.

4. The lens unit suitable for tilted shapes according to claim 1, characterized in that, The light-receiving part (1) is made of PC, PMMA, PMMI, or glass.

5. The lens unit suitable for tilted shapes according to claim 1, characterized in that, The light-emitting part (2) has a diffusion pattern on its light-emitting surface.

6. The lens unit suitable for tilted shapes according to claim 1, characterized in that, The light-inlet section (1) and the light-outlet section (2) are integrally formed.

7. A vehicle light, characterized in that, Includes a lens unit suitable for tilting shapes as described in any one of claims 1-6.

8. The vehicle light according to claim 7, characterized in that, The number of lens units is multiple, and the multiple lens units are staggered front and back along the tilt angle of the shape.

9. The vehicle light according to claim 8, characterized in that, The PCB board is included, and each of the lens units is associated with a light source (31), and multiple light sources (31) are disposed on the PCB board.

10. A vehicle, characterized in that, Includes the vehicle light as described in claim 7.

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