Low beam optical module, low beam illumination module, vehicle lamp and vehicle

Patent metadata

Field	Value
Publication number	US-11731552-B2
Application number	US-202117415214-A
Country	US
Kind code	B2
Filing date	Jan 13, 2021
Priority date	Jan 20, 2020
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A low beam optical module includes a lens, a light-shielding sheet and at least one light concentrating portion. The light-shielding sheet includes a light-shielding sheet body. An upper edge of a front end of the light-shielding sheet body comprises a low beam cutoff line structure. A front end surface and the rear end surface of the light-shielding sheet body are transparent. The light concentrating portion is connected to a rear end of the light-shielding sheet. The lens is arranged in front of the light-shielding sheet, and an outer contour surface of the at least one light concentrating portion is engaged with a lower surface of the light-shielding sheet body—the light-shielding sheet body can receive emitted light of the light concentrating portion and refract the light from the front end surface to the lens. The projected light forms a low beam region III beam shape. A low beam illumination module, a vehicle lamp and a vehicle includes the low beam optical module.

First claim

The invention claimed is:

1. A low beam optical module, comprising a lens, a light-shielding sheet and at least one light concentrating portion, wherein the light-shielding sheet comprises a light-shielding sheet body; an upper edge of a front end of the light-shielding sheet body is provided with a low beam cutoff line structure; a front end surface and a rear end surface of the light-shielding sheet body are transparent; the light concentrating portion is connected to a rear end of the light-shielding sheet; the lens is arranged in front of the light-shielding sheet; an outer contour surface of the at least one light concentrating portion is engaged with a lower surface of the light-shielding sheet body, so that when in use, after the light concentrating portion refracts its received light, a part of the light is emitted into the lens and projected to form a low beam shape, and a small part of the light is emitted to enter the inside of the light-shielding sheet body via the rear end surface of the light-shielding sheet body and refract the light from the front end surface to the lens, and then the light is projected to form a low beam region III beam shape.

2. A low beam illumination module, comprising the above low beam optical module according to claim 1 and light sources, wherein each light concentrating portion is correspondingly provided with the light sources.

3. A vehicle lamp, comprising the low beam illumination module according to claim 2 .

4. The low beam illumination module according to claim 2 , wherein the upper surface of the light-shielding sheet body is provided with a reflection enhancing coating or a reflection enhancing film.

5. The low beam illumination module according to claim 2 , wherein the front end surface of the light-shielding sheet body is a rear concave arc surface.

6. The low beam illumination module according to claim 2 , wherein the lower portion of the at least one light concentrating portion is provided with a low beam region III forming structure protruding from the lower surface of the light-shielding sheet body.

7. The low beam illumination module according to claim 2 , wherein the light concentrating portion and the light-shielding sheet are formed as an integrated part.

8. The low beam illumination module according to claim 2 , wherein the light concentrating portion, the lens and the light-shielding sheet are integrally arranged.

9. The low beam illumination module according to claim 8 , wherein two sides of the lens are connected with two sides of the light concentrating portion through connecting plates, respectively.

10. The low beam illumination module according to claim 2 , wherein the light concentrating portion is a light concentrating cup, and the outer contour surface of the light concentrating cup is a curved structure of which an opening diameter is gradually increased from a rear end to a front end; or
the light concentrating portion is of a protruding structure which protrudes backwards with respect to the rear end surface of the light-shielding sheet body.

11. The low beam optical module according to claim 1 , wherein an upper surface of the light-shielding sheet body is provided with a reflection enhancing coating or a reflection enhancing film.

12. The low beam optical module according to claim 11 , wherein the reflection enhancing coating is an aluminum coated layer.

13. The low beam optical module according to claim 1 , wherein a lower portion of the at least one light concentrating portion is provided with a low beam region III forming structure protruding from the lower surface of the light-shielding sheet body.

14. The low beam optical module according to claim 13 , wherein the light-shielding sheet body has a thickness of 0.5 mm to 2 mm.

15. The low beam optical module according to claim 1 , wherein the light concentrating portion, the lens and the light-shielding sheet are integrally arranged.

16. The low beam optical module according to claim 15 , wherein two sides of the lens are connected with two sides of the light concentrating portion through connecting plates, respectively.

17. The low beam optical module according to claim 1 , wherein the front end surface of the light-shielding sheet body is a rear concave arc surface.

18. The low beam optical module according to claim 1 , wherein the light concentrating portion and the light-shielding sheet are formed as an integrated part.

19. The low beam optical module according to claim 1 , wherein the lens is a convex lens or a Fresnel lens.

20. The low beam optical module according to claim 1 , wherein the light concentrating portion is a light concentrating cup, and the outer contour surface of the light concentrating cup is a curved structure of which an opening diameter is gradually increased from a rear end to a front end; or
the light concentrating portion is of a protruding structure which protrudes backwards with respect to the rear end surface of the light-shielding sheet body.

Assignees

• Hasco Vision Tech Co Ltd

Inventors

• Zhu He
• Qiu Zhiping
• Sang Wenhui

Classifications

• B60Q1/04 Primary

  the devices being headlights · CPC title

• F21S41/285

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805 · CPC title

• F21S41/37

  characterised by their material, surface treatment or coatings · CPC title

• F21V1/14

  Covers for frames; Frameless shades · CPC title

• F21V5/045

  the lens having discontinuous faces, e.g. Fresnel lenses · CPC title