Optical system with light curtain effect

Abstract

The present invention provides an optical system with a light curtain effect, comprising a thick-walled part, wherein a accommodating space is provided behind the rear end of the thick-walled part, and the accommodating space is used to place a light source, and the light emitted by the light source enters from the rear end face of the thick-walled part, and a part of the light is emitted from the front end face of the thick-walled part; one side of the front end of the thick-walled part has a first concave-convex structure, and a rear wall part extension part extends from the other side of the front end of the thick-walled part, and the rear end face of the rear wall part extension part has a second concave-convex structure, and another part of the light is projected onto the first concave-convex structure and then reflected onto the second concave-convex structure and then reflected again and emitted from the front end of the rear wall part extension part. While the main body of the present invention meets the signal light distribution regulations, the rear wall part extension part is evenly illuminated by setting the first concave-convex structure, thereby meeting the requirements on the luminous area in the FMVSS108 regulations, and can achieve a variety of uniform lighting effects in combination with different types of optical patterns, greatly improving the lighting effect of the car lights, and at low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamps, and in particular to an optical system with a light curtain effect. Background Art

[0002] Headlights are essential automotive components, providing illumination in dim conditions and ensuring driving safety. However, current headlights are simple, simply mounted within a curved hood. This results in diffused light and poor lighting. To meet the luminous area requirements of FMVSS 108, a reflector bowl must be designed in addition to the optical unit and illuminated simultaneously, often increasing costs.

[0003] Patent document CN214275574U discloses a vehicle lamp structure that can achieve a three-dimensional lighting effect. It is characterized in that it includes an outer cover, a support structure, a light source assembly, and a shell. The light source assembly and the support structure are fixed inside the shell, and the light source assembly is located on the lower side of the support structure. The internal decorative frame of the utility model is a three-dimensional shape and is provided with a depth structure with a depth effect. The internal decorative frame is composed of transparent and opaque materials to achieve multiple annular light-emitting areas. At the same time, the light relies on the diffusion function of the inner cover to ensure the uniformity of lighting in each ring. However, the lighting area of ​​this design is not large enough and needs further optimization. Summary of the Invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide an optical system with a light curtain effect.

[0005] According to the present invention, an optical system with a light curtain effect includes a thick-walled member, wherein a receiving space is provided behind the rear end of the thick-walled member, and the receiving space is used to place a light source;

[0006] The light emitted by the light source enters from the rear end face of the thick-walled member, and a portion of the light is emitted from the front end face of the thick-walled member;

[0007] One side of the front end of the thick-walled part has a first concave-convex structure, and a rear wall part extension portion extends from the other side of the front end of the thick-walled part. The rear end face of the rear wall part extension portion has a second concave-convex structure. Another part of the light is projected onto the first concave-convex structure, reflected onto the second concave-convex structure, and then reflected again and emitted from the front end of the rear wall part extension portion.

[0008] Preferably, the surface of the second concave-convex structure has an aluminum plating layer or a chrome plating layer.

[0009] Preferably, the first concave-convex structure is a tooth-shaped structure.

[0010] Preferably, the second concave-convex structure is any one of the following structures:

[0011] A plurality of first groove surfaces arranged sequentially;

[0012] A plurality of second groove surfaces are sequentially arranged at intervals, and a first plane structure is formed between every two adjacent second groove surfaces;

[0013] A plurality of groove structures are sequentially arranged at intervals, and a third groove surface is provided between every two adjacent groove structures;

[0014] A second planar structure is provided with a plurality of uniform or non-uniform first hole structures.

[0015] Preferably, the connection between each two adjacent first groove surfaces has a plurality of second hole structures that are evenly or unevenly arranged.

[0016] Preferably, the cross sections of the first groove surface, the second groove surface and the third groove surface are all arc-shaped structures.

[0017] Preferably, the cross section of the groove structure is a parabolic structure.

[0018] Preferably, the first groove surface, the second groove surface and the third groove surface are all long groove structures, and two ends of the long groove structures extend to two ends of the rear wall member extension portion respectively.

[0019] Preferably, the inner surfaces of the first hole structure and the second hole structure are structures that match the outer surface of the end of the ellipsoid.

[0020] Preferably, the rear end face of the thick-walled part has a peripheral optical pattern, one or more draft transition surfaces are arranged on the peripheral optical pattern, a central optical pattern is provided inside the draft transition surface, and the central optical pattern faces the light source.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. While the main body of the present invention meets the regulations on signal light distribution, the first concave-convex structure is provided to evenly illuminate the extended portion of the rear wall, thereby meeting the requirements on the luminous area in the FMVSS108 regulations. In addition, it can achieve a variety of uniform lighting effects by combining with different types of optical patterns, greatly improving the lighting effect of the headlights at a low cost.

[0023] 2. The second concave-convex structure in the present invention has a variety of feasible structures, is flexible in structure, and is highly practical.

[0024] 3. The first concave-convex structure in the present invention is provided with multiple third planar structures to realize light reflection and transmission. The third planar structure can reasonably set its inclination according to the distance from the light source to cooperate with the second concave-convex structure to achieve a good lighting effect. The structural design is ingenious and the customer experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 Schematic cross-sectional view of a thick-walled part in the present invention;

[0027] Figure 2 This is a schematic diagram of the front structure of the thick-walled part;

[0028] Figure 3 Schematic diagram of the structure of the second concave-convex structure in Example 2;

[0029] Figure 4 Schematic diagram of the cross-sectional structure in Example 2;

[0030] Figure 5 for Figure 4 Schematic diagram of a local enlarged structure;

[0031] Figure 6 Schematic diagram of the structure of the second concave-convex structure in Example 3;

[0032] Figure 7 Schematic diagram of the cross-sectional structure in Example 3;

[0033] Figure 8 for Figure 7 Schematic diagram of a local enlarged structure;

[0034] Figure 9 Schematic diagram of the structure of the second concave-convex structure in Example 4;

[0035] Figure 10 Schematic diagram of the cross-sectional structure in Example 4;

[0036] Figure 11 for Figure 10 Schematic diagram of a local enlarged structure;

[0037] Figure 12 Schematic diagram of the structure of the second concave-convex structure in Example 5;

[0038] Figure 13 Schematic diagram of the cross-sectional structure in Example 5;

[0039] Figure 14 for Figure 13 Schematic diagram of a local enlarged structure;

[0040] Figure 15 Schematic diagram of the structure of the second concave-convex structure in Example 6;

[0041] Figure 16Schematic diagram of the cross-sectional structure in Example 6;

[0042] Figure 17 for Figure 16 Schematic diagram of the local enlarged structure.

[0043] The figure shows:

[0044] Thick-walled part 1 Second hole structure 11

[0045] Light source 2 Peripheral optical pattern 12

[0046] First concave-convex structure 3 draft transition surface 13

[0047] Back wall extension 4 Center optical pattern 14

[0048] Second concave-convex structure 5 Light 15

[0049] First groove surface 6 Third plane structure 16

[0050] Second groove surface 7 Main body front surface 17

[0051] First planar structure 8 Extension portion front surface 18

[0052] Third groove surface 9 groove structure 19

[0053] First hole structure 10 Second plane structure 20 DETAILED DESCRIPTION

[0054] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0055] Example 1:

[0056] The present invention provides an optical system with a light curtain effect, which is used for automobile signal lights and can be used to realize functions such as position lights, turn lights, brake lights, etc. Figure 1 、 Figure 2 As shown, it includes a thick-walled part 1, and there is a accommodating space behind the rear end of the thick-walled part 1. The accommodating space is used to place the light source 2. The light source 2 is preferably an LED lamp. The light 15 emitted by the light source 2 enters and is collimated from the rear end face of the thick-walled part 1, and a part of the light 15 is emitted from the front end face of the thick-walled part 1, that is, from the front surface 17 of the main body of the thick-walled part 1. The front surface 17 of the main body has an optical pattern, which plays a role in properly diffusing the light 15 to meet the requirements of lighting distribution regulations.

[0057] A first concave-convex structure 3 is formed on one side of the front end of the thick-walled member 1. A rear wall extension 4 extends from the other side of the front end of the thick-walled member 1. The rear end surface of the rear wall extension 4 has a second concave-convex structure 5. Another portion of light 15 is projected onto the first concave-convex structure 3, reflected by the second concave-convex structure 5, and then reflected again, exiting from the front surface 18 of the front end of the rear wall extension 4. While the main body of the present invention meets the lighting distribution regulations for signal lamps, the first concave-convex structure 3 uniformly illuminates the rear wall extension 4, meeting the luminous area requirements of FMVSS108. Furthermore, the present invention can achieve a variety of uniform lighting effects when combined with different types of optical patterns.

[0058] Specifically, the surface of the second concave-convex structure 5 is preferably subjected to aluminum plating or chrome plating process, so that the surface of the second concave-convex structure 5 has an aluminum plating layer or a chrome plating layer, thereby increasing the reflective effect.

[0059] like Figure 1 As shown, the first concave-convex structure 3 is a tooth-like structure, which has a plurality of third planar structures 16 facing the emission direction of the light 15. When the light 15 is projected onto the third planar structure 16, the light 15 can be projected onto the second concave-convex structure 5 after reflection, thereby realizing the lighting effect of the second concave-convex structure 5. Among them, the plurality of third planar structures 16 are partially parallel, all parallel, or not parallel, and are reasonably set according to the actual lighting effect.

[0060] The second concave-convex structure 5 has an optical pattern, which functions to totally reflect the light 15 totally reflected by the first concave-convex structure 3 again and emit it through the front surface 18 of the extension portion. The second concave-convex structure 5 includes various structural forms, which are described in detail through several embodiments below.

[0061] Example 2:

[0062] This embodiment is the first preferred embodiment of Embodiment 1.

[0063] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 As shown, the second concave-convex structure 5 is a plurality of first groove surfaces 6 arranged in sequence, the cross section of the first groove surface 6 is an arc structure, the first groove surface 6 is a long groove structure and the two ends of the long groove structure extend to the two ends of the rear wall extension part 4 respectively.

[0064] Specifically, the rear end face of the thick-walled part 1 serves to collimate the light emitted by the light source 2. The rear end face of the thick-walled part 1 has a peripheral optical pattern 12, and one or more draft transition surfaces 13 are arranged on the peripheral optical pattern 12. A central optical pattern 14 is provided inside the draft transition surface 13, and the central optical pattern 14 is facing the light source 2.

[0065] Example 3:

[0066] This embodiment is the second preferred embodiment of Embodiment 1.

[0067] In this embodiment, Figure 6 、 Figure 7 、 Figure 8 As shown, the second concave-convex structure 5 is a plurality of second groove surfaces 7 arranged in sequence and spaced apart, and a first planar structure 8 is provided between each two adjacent second groove surfaces 7. The cross-sections of the second groove surfaces 7 are arc-shaped structures, and the second groove surfaces 7 are long groove structures, and the two ends of the long groove structure extend to the two ends of the rear wall extension portion 4 respectively.

[0068] Example 4:

[0069] This embodiment is the third preferred embodiment of Embodiment 1.

[0070] In this embodiment, Figure 9 、 Figure 10 、 Figure 11 As shown, the second concave-convex structure 5 is a plurality of groove structures 19 arranged in sequence and spaced apart, and there is a third groove surface 9 between every two adjacent groove structures 19 , and the groove depth of the groove structure 19 is greater than the groove depth of the third groove surface 9 .

[0071] The cross section of the groove structure 19 is a parabolic structure, the cross section of the third groove surface 9 is an arc structure, and the third groove surface 9 is a long groove structure with both ends of the long groove structure extending to both ends of the rear wall member extension 4 respectively.

[0072] Example 5:

[0073] This embodiment is the fourth preferred embodiment of Embodiment 1.

[0074] In this embodiment, Figure 12 、 Figure 13 、 Figure 14 As shown, the second concave-convex structure 5 is a second planar structure 20 arranged with a plurality of uniform or non-uniform first hole structures 10, and the inner surfaces of the first hole structures 10 are all structures matching the outer surfaces of the ends of the ellipsoid.

[0075] Example 6:

[0076] This embodiment is the fifth preferred embodiment of Embodiment 1.

[0077] In this embodiment, Figure 15 、 Figure 16 、 Figure 17As shown, the second concave-convex structure 5 is a plurality of first groove surfaces 6 arranged in sequence, and the connection between each two adjacent first groove surfaces 6 has a plurality of second hole structures 11 arranged evenly or unevenly. Preferably, the connection between the two first groove surfaces 6 has a plurality of second hole structures 11 arranged evenly, and the inner surfaces of the second hole structures 11 are all structures that match the outer surfaces of the ellipsoid ends.

[0078] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 this application.

[0079] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. An optical system with a light curtain effect, characterized in that: It comprises a thick-walled member (1), wherein the rear end of the thick-walled member (1) has an accommodation space, and the accommodation space is used to place a light source (2); The light (15) emitted by the light source (2) enters from the rear end face of the thick-walled member (1), and a portion of the light (15) is emitted from the front end face of the thick-walled member (1); One side of the front end of the thick-walled member (1) has a first concave-convex structure (3), and the other side of the front end of the thick-walled member (1) extends a rear wall member extension portion (4), and the rear end surface of the rear wall member extension portion (4) has a second concave-convex structure (5), and another part of the light (15) is projected onto the first concave-convex structure (3), reflected onto the second concave-convex structure (5), and then reflected again and emitted from the front end of the rear wall member extension portion (4); The first concave-convex structure (3) is a tooth-shaped structure. The first concave-convex structure (3) has a plurality of third planar structures (16) facing the emission direction of the light (15) to realize light reflection and transmission. The inclination of the third planar structure (16) can be set according to the distance from the light source (2) to achieve uniform lighting on the rear end surface of the rear wall extension part (4) in cooperation with the second concave-convex structure. The rear end surface of the rear wall member extension portion (4) is a curved surface that gradually extends toward the front end in a direction gradually moving away from the first concave-convex structure (3).

2. The optical system with light curtain effect according to claim 1, characterized in that: The surface of the second concavo-convex structure (5) has an aluminum plating layer or a chromium plating layer.

3. The optical system with light curtain effect according to claim 1, characterized in that: The second concave-convex structure (5) is any of the following structures: A plurality of first groove surfaces (6) arranged in sequence; A plurality of second groove surfaces (7) are sequentially arranged at intervals, and a first plane structure (8) is provided between every two adjacent second groove surfaces (7); A plurality of groove structures (19) are sequentially spaced apart, and a third groove surface (9) is provided between every two adjacent groove structures (19); A second planar structure (20) is provided with a plurality of uniform or non-uniform first hole structures (10).

4. The optical system with light curtain effect according to claim 3, characterized in that: The connection between each two adjacent first groove surfaces (6) has a plurality of second hole structures (11) that are evenly or unevenly arranged.

5. The optical system with light curtain effect according to claim 3, characterized in that: The cross sections of the first groove surface (6), the second groove surface (7), and the third groove surface (9) are all arc-shaped structures.

6. The optical system with light curtain effect according to claim 3, characterized in that: The cross section of the groove structure (19) is a parabolic structure.

7. The optical system with light curtain effect according to claim 3, characterized in that: The first groove surface (6), the second groove surface (7), and the third groove surface (9) are all long groove structures, and both ends of the long groove structures extend to both ends of the rear wall member extension portion (4).

8. The optical system with light curtain effect according to claim 4, characterized in that: The inner surfaces of the first hole structure (10) and the second hole structure (11) are both structures that match the outer surface of the end of the ellipsoid.

9. The optical system with light curtain effect according to claim 1, characterized in that: The rear end face of the thick-walled part (1) has a peripheral optical pattern (12), one or more draft transition surfaces (13) are arranged on the peripheral optical pattern (12), a central optical pattern (14) is provided inside the draft transition surface (13), and the central optical pattern (14) faces the light source (2).

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