Headlamp optical element, headlamp module, vehicle lamp and vehicle

Patent metadata

Field	Value
Publication number	US-11745639-B2
Application number	US-202117416027-A
Country	US
Kind code	B2
Filing date	Jan 13, 2021
Priority date	Jan 20, 2020
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

The present disclosure relates to a headlamp optical element comprising a light collecting part, a light emitting part and a reflecting part connected in sequence. The reflecting part comprises a low beam or high beam cutoff line structure. The end of the light collecting part comprises an outer contour surface and a concave cavity including a cambered front light incident surface and a lateral light incident surface that is curved with a smaller circumference closer to the reflecting part. The outer contour surface is curved with a larger circumference closer to the reflecting part. A lower portion of the light collecting part is provided with a region III light-shape forming structure, wherein part of light converged can be emitted from region III and under the reflecting part in sequence forming a light-shape of a low beam region III. The headlamp optical element is simple, compact, and lighter in weight.

First claim

What is claimed is:

1. A headlamp optical element, comprising a light collecting part, a light emitting part and a reflecting part which are connected in sequence along a light emitting direction, wherein
one end of the reflecting part is connected with a lower portion of the light emitting part, and the other end of the reflecting part is provided with a low beam cutoff line structure for forming a low beam cutoff line;
the low beam cutoff line structure is arranged on a front edge of a reflecting surface of the reflecting part; the light collecting part is a light concentrating cup structure, an end of the light collecting part away from the reflecting part is provided with a concave cavity, the concave cavity comprises a front light incident surface and a lateral light incident surface, the front light incident surface is a curved surface protruding to a side away from the reflecting part, the lateral light incident surface is a curved surface of which the circumference gradually decreases from an end away from the reflecting part to an end close to the reflecting part, and an outer contour surface of the light collecting part is a curved surface of which the circumference gradually increases from the end away from the reflecting part to the end close to the reflecting part; a lower portion of the light collecting part is provided with a region III light shape forming structure, part of light converged by the light collecting part can be emitted from the region III light shape forming structure and emitted under the reflecting part to form a light shape of a low beam region III.

2. The headlamp optical element according to claim 1 , wherein a 50L dark region forming structure is formed on the reflecting surface, provided with the low beam cutoff line structure, of the reflecting part, and light emitted from the light emitting part to the 50L dark region forming structure can be reflected and refracted by the 50L dark region forming structure so that the brightness of a low beam 50L region can be lowered.

3. The headlamp optical element according to claim 1 , wherein an end surface of the reflecting part away from the light collecting part is a smooth concave arc-shaped curved surface with a continuous curvature.

4. The headlamp optical element according to claim 1 , wherein the number of the light collecting parts is two or more.

5. The headlamp optical element according to claim 1 , wherein the reflecting surface of the reflecting part is provided with a reflection enhancing layer.

6. A headlamp module, comprising the headlamp optical element according to claim 1 and a lens, wherein the headlamp optical element and the lens are in a split structure, and the lens is arranged in a light emitting direction of the headlamp optical element; or the headlamp optical element and the lens are in an integrated structure, and the lens and the headlamp optical element are connected through connecting plates.

7. The headlamp module according to claim 6 , wherein the low beam cutoff line structure is located in a region defined from a part at 10 mm above to a part at 10 mm below an optical axis of the lens.

8. The headlamp module according to claim 6 , wherein the lens is a convex lens or a Fresnel lens structure.

9. The headlamp module according to claim 6 , wherein a 50L dark region forming structure is formed on the reflecting surface, provided with the low beam cutoff line structure, of the reflecting part, and light emitted from the light emitting part to the 50L dark region forming structure can be reflected and refracted by the 50L dark region forming structure so that the brightness of a low beam 50L region can be lowered.

10. The headlamp module according to claim 6 , wherein an end surface of the reflecting part away from the light collecting part is a smooth concave arc-shaped curved surface with a continuous curvature.

11. The headlamp module according to claim 6 , wherein the number of the light collecting parts is two or more.

12. The headlamp module according to claim 6 , wherein the reflecting surface of the reflecting part is provided with a reflection enhancing layer.

13. A vehicle lamp, comprising the headlamp module according to claim 6 .

14. The vehicle lamp according to claim 13 , wherein a 50L dark region forming structure is formed on the reflecting surface, provided with the low beam cutoff line structure, of the reflecting part, and light emitted from the light emitting part to the 50L dark region forming structure can be reflected and refracted by the 50L dark region forming structure so that the brightness of a low beam 50L region can be lowered.

15. The vehicle lamp according to claim 13 , wherein an end surface of the reflecting part away from the light collecting part is a smooth concave arc-shaped curved surface with a continuous curvature.

16. The vehicle lamp according to claim 13 , wherein the number of the light collecting parts is two or more.

17. The vehicle lamp according to claim 13 , wherein the reflecting surface of the reflecting part is provided with a reflection enhancing layer.

18. The vehicle lamp according to claim 13 , wherein the low beam cutoff line structure is located in a region defined from a part at 10 mm above to a part at 10 mm below an optical axis of the lens.

19. The vehicle lamp according to claim 13 , wherein the lens is a convex lens or a Fresnel lens structure.

Assignees

• Hasco Vision Tech Co Ltd

Inventors

• Zhu He
• Qiu Zhiping
• Sang Wenhui

Classifications

• F21S41/143 Primary

  the main emission direction of the LED being parallel to the optical axis of the illuminating device · CPC title

• F21S41/285

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

• F21S41/29

  Attachment thereof (for achieving variable light distribution F21S41/63) · CPC title

• F21S41/295

  specially adapted to projection lenses · CPC title

• B60Q1/04 Primary

  the devices being headlights · CPC title