Light system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10047924-B2
Application number	US-201515523493-A
Country	US
Kind code	B2
Filing date	Oct 29, 2015
Priority date	Nov 3, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A motor vehicle light system (2) comprising at least two light sources (12a through 12d), at least two optical waveguides (11a through 11d), at least one downstream transparent emission element (10), and at least one controller (5) for time-offset actuation of the at least two light sources (12a through 12d), the at least two light sources (12a through 12d) being set up to couple light into one optical waveguide each (11a through 11d), the optical waveguides (11a through 11d) each having at least one light out-coupling section (14a through 14c) that is set up to couple light into a light coupling section (19) of the emission element (10), wherein the light coupling section (19) of the emission element (10) is step-shaped.

First claim

The invention claimed is:

1. A motor vehicle headlight with a light system ( 2 ) comprising:
at least two light sources ( 12 a through 12 d );
at least two optical waveguides ( 11 a through 11 d );
at least one downstream transparent emission element ( 10 ); and
at least one controller ( 5 ) for time-offset actuation of the at least two light sources ( 12 a through 12 d ), each of the at least two light sources ( 12 a through 12 d ) being set up to couple light into a corresponding one of the at least two optical waveguides ( 11 a through 11 d ), the at least two optical waveguides ( 11 a through 11 d ) each having at least one light out-coupling section ( 14 a through 14 c ) that is set up to couple light into a light coupling section ( 19 ) of the at least one downstream transparent emission element ( 10 ),
wherein the light coupling section ( 19 ) of the at least one downstream transparent emission element ( 10 ) is step-shaped, the at least one downstream transparent emission element ( 10 ) being formed as a single piece.

2. The motor vehicle headlight of claim 1 , wherein the at least two optical waveguides ( 11 a through 11 d ) each have two straight sides ( 11 d ′, 11 d ′″) that are connected together by means of a curved section ( 11 d ′″), the straight sides ( 11 d ′, 11 d ′″) including an angle of at least 60°.

3. The motor vehicle headlight of claim 1 , wherein the at last two optical waveguides ( 11 a through 11 d ) are in the form of illumination rods.

4. The motor vehicle headlight of claim 1 , wherein the number of the at least two optical waveguides ( 11 a through 11 d ) exceeds the number of steps of the at least one downstream transparent emission element ( 10 ) by one.

5. The motor vehicle headlight of claim 1 , wherein the at least two optical waveguides ( 11 a through 11 d ) comprise at least three optical waveguides ( 11 a through 11 d ).

6. The motor vehicle headlight of claim 1 , wherein the height (h) of every step of the at least one downstream transparent emission element ( 10 ) is greater than the diameter ( d ) of a corresponding optical waveguide ( 11 a through 11 d ) of the at least two optical waveguide ( 11 a through 11 d ).

7. The motor vehicle headlight of claim 1 , wherein the at least two optical waveguides ( 11 a through 11 d ) run essentially parallel to one another, at least in sections.

8. The motor vehicle headlight of claim 1 , wherein the at least two optical waveguides ( 11 a through 11 d ) have shield elements arranged between them.

9. The motor vehicle headlight of claim 1 , wherein the at least two optical waveguides ( 11 a through 11 d ) are separated from one another by at least 1 mm.

10. The motor vehicle headlight of claim 1 , wherein the light out-coupling section ( 14 a through 14 c ) of the at least two optical waveguides ( 11 a through 11 d ) is separated from the light coupling section ( 19 ) of the at least one downstream transparent emission element ( 10 ) by at least 1 mm.

11. A motor vehicle with a motor vehicle headlight according to claim 1 .

12. The motor vehicle headlight of claim 3 , wherein the at least one downstream transparent emission element ( 10 ) has a continuous light exit surface ( 25 ).

Assignees

• Zkw Group Gmbh

Inventors

• Faffelberger Anton
• DANNER Laura

Classifications

• F21S41/24 Primary

  Light guides · CPC title

• F21S43/237

  rod-shaped · CPC title

• F21S41/14

  characterised by the type of light source · CPC title

• F21S43/235

  Light guides · CPC title

• F21S41/43

  characterised by the shape thereof · CPC title