Headlamp for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2023096707-A1
Application number	US-202218061406-A
Country	US
Kind code	A1
Filing date	Dec 2, 2022
Priority date	Jun 3, 2020
Publication date	Mar 30, 2023
Grant date	—

Abstract

A headlamp for a motor vehicle is provided including a plurality of first light sources for a high beam, emitting light during operation of the headlamp, and a plurality of second light sources for a low beam, emitting light during operation of the headlamp. A first light guide is also provided, having a plurality of light entry surfaces arranged side by side for the light emitted from the first light sources and a first light exit surface. A second light guide is also provided, having a plurality of light entry surfaces arranged side by side for the light emitted from the second light sources and a second light exit surface. At least a first one of the light entry surfaces has a greater width in the direction in which the light entry surfaces are arranged side by side than at least a second one of the light entry surfaces.

First claim

We claim:

1 . A headlamp for a motor vehicle, the headlamp comprising:
a plurality of first light sources for a high beam, emitting light during operation of the headlamp, a plurality of second light sources for a low beam, emitting light during operation of the headlamp, a first light guide having a plurality of light entry surfaces arranged side by side for the light emitted from the first light sources and a first light exit surface, a second light guide having a plurality of light entry surfaces arranged side by side for the light emitted from the second light sources and a second light exit surface, wherein at least a first one of the light entry surfaces has a greater width in a direction in which the light entry surfaces are arranged side by side than at least a second one of the light entry surfaces.

2 . The headlamp according to claim 1 , wherein at least a first one of the light entry surfaces in the direction in which the light entry surfaces are arranged side by side has such a large width that two of the light sources can be arranged side by side in front of this light entry surface.

3 . The headlamp according to claim 1 , wherein the at least one first of the light entry surfaces is arranged further outwardly in the direction in which the light entry surfaces are arranged side by side than the at least one second of the light entry surfaces.

4 . The headlamp according to claim 1 , wherein the width of the light entry surfaces increases at least partially from a central region outwards in the direction in which the light entry surfaces are arranged side by side.

5 . The headlamp according to claim 1 , wherein the at least one first of the light entry surfaces and the at least one second of the light entry surfaces are light entry surfaces of the second light guide.

6 . The headlamp according to claim 1 , wherein each of the light guides has light guide elements which project from the light guides, the ends of the light guide elements facing away from the light guides forming the light entry surfaces.

7 . The headlamp according to claim 6 , wherein a first light guide element, the end of which forms the at least one first of the light entry surfaces, has a greater width over its longitudinal extension in the direction in which the light entry surfaces are arranged side by side than a second light guide element, the end of which forms the at least one second of the light entry surfaces.

8 . The headlamp according to claim 1 , wherein the first and/or the second light sources are light-emitting diodes.

9 . The headlamp according to claim 1 , wherein the first and/or the second light sources can be controlled individually or in individual groups.

10 . The headlamp according to claim 1 , wherein the first light exit surface and/or the second light exit surface have a structuring.

11 . The headlamp according to claim 10 , wherein in a region which is arranged centrally in the direction in which the light entry surfaces are arranged side by side, the structuring of the first light exit surface and/or the second light exit surface is not provided.

12 . The headlamp according to claim 1 , wherein the light guides each have a collimating lens.

13 . The headlamp according to claim 1 , further including an optical component which comprises both the first and the second light guide.

14 . The headlamp according to claim 13 , wherein the optical component has a light exit surface which is formed by the light exit surfaces of the first and second light guides.

15 . The headlamp according to claim 1 , wherein the headlamp has a secondary optics through which the light emerging from the light exit surfaces of the first and/or the second light guide passes during operation of the headlamp.

Assignees

• Hella Gmbh & Co Kgaa

Inventors

• Hagedorn Susanne

Classifications

• F21S41/24 Primary

  Light guides · CPC title

• F21S41/143 Primary

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

• F21S41/153

  arranged in a matrix · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21S41/43

  characterised by the shape thereof · CPC title