Dual-function Low-high beam lighting module for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2016334072-A1
Application number	US-201615149365-A
Country	US
Kind code	A1
Filing date	May 9, 2016
Priority date	May 13, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

A lighting module for a motor vehicle headlight intended to produce a low beam having an at least partly oblique cut-off. This same module further comprises an additional lighting function making it possible to generate a high type beam, the dimensions of the lighting module remaining identical. The light sources of the two respective low and high beam functions are arranged in a vicinity of the focus of an optical portion of the module such that the lighting module remains compact.

First claim

What is claimed is:

1 . A lighting module, notably for a motor vehicle, comprising an optical element intended to produce at least one first beam exhibiting an at least partly oblique cut-off, and at least one first light source, said lighting module comprising:
said optical element comprises at least one first optical portion having an optical axis and a focus, said at least one first light source being arranged at said focus and suitable for emitting first light rays toward said optical element to produce said at least one first beam, said lighting module further comprises a second light source, said second light source being arranged at a distance from said focus and offset downward relative to said at least one first light source on a vertical axis, said second light source being suitable for emitting second light rays toward said optical element to produce a second beam at least partially lighting above said at least partly oblique cut-off.

2 . The lighting module according to claim 1 , in which said second light source is offset relative to said at least one first light source on a transverse axis.

3 . The lighting module according to claim 1 , in which said at least one first light source exhibits a light emission zone comprising an edge, said edge being arranged at said focus of said at least one first optical portion of said optical element.

The lighting module according to claim 3 , in which said at least one first light source is oriented facing said optical element such that said edge is an oblique edge.

5 . The lighting module according to claim 4 , in which said second light source is oriented facing said optical element identically to the orientation of said at least one first light source facing said optical element.

6 . The lighting module according to claim 1 , in which a low-type beam, comprising said at least one first beam, is generated when said at least one first light source is switched on, said second light source being switched off.

7 . The lighting module according to claim 1 , in which a high-type beam, comprising a superpositioning and/or a juxtapositioning of said at least one first beam and said second beam, is generated when said at least one first light source and said second light source are switched on.

8 . The lighting module according to claim 1 , in which a beam of daytime running light type is generated when said second light source is switched on while being powered using an electrical power lower than that needed to generate said second beam, said at least one first light source being switched off.

9 . The lighting module according to claim 1 , in which the distance between said at least one first light source and said second light source is less than or equal to a fraction of the focal distance of said at least one first optical portion.

10 . The lighting module according to claim 1 , in which said at least one first light source and said second light source each consist of a semiconductive light-emitting chip that can be selectively activated.

11 . The lighting module according to claim 10 , in which said at least one first light source and said second light source are formed by a same light-emitting diode of dual-chip type.

12 . The lighting module according to claim 1 , in which said at least one first light source and said second light source are formed by a matrix of diodes comprising at least two diodes each forming one of said at least one first light source and said second light source.

13 . The lighting module according to claim 1 , in which said at least one first optical portion is a lens.

14 . The lighting module according to claim 1 , in which the material of said at least one first optical portion is PVC, glass, polycarbonate or PMMA.

15 . The lighting module according to claim 1 , in which said at least one first beam is intended to form part of a low-type beam and in which said optical element comprises at least one second optical portion having an optical axis, a focus and a third light source arranged in the vicinity of said focus of said at least one second optical portion to produce said second beam forming part of said low-type beam.

16 . A lighting module, notably for a motor vehicle, comprising an optical element intended to produce at least one first beam exhibiting an at least partly oblique cut-off, and at least one first light source, said lighting module comprising:
said optical element comprises at least one first optical portion having an optical axis and a focus, said at least one first light source being arranged at said focus and suitable for emitting first light rays toward said optical element to produce said at least one first beam, said lighting module further comprises a second light source, said second light source being arranged at a distance from said focus and offset relative to said at least one first light source on or near a vertical axis, said second light source being suitable for emitting second light rays toward said optical element to produce a second beam at least partially lighting above said at least partly oblique cut-off.

17 . The lighting module according to claim 16 , in which said second light source is offset relative to said at least one first light source on a transverse axis.

18 . The lighting module according to claim 16 , in which said at least one first light source exhibits a light emission zone comprising an edge, said edge being arranged at said focus of said at least one first optical portion of said optical element.

19 . The lighting module according to claim 18 , in which said at least one first light source is oriented facing said optical element such that said edge is an oblique edge.

20 . The lighting module according to claim 19 , in which said second light source is oriented facing said optical element identically to the orientation of said at least one first light source facing said optical element.

Assignees

• Valeo Vision

Inventors

• Meyrenaud Jean-Luc
• Racine Paul
• Thabet Ziyed

Classifications

• B60Q1/1407

  General lighting circuits comprising dimming circuits · CPC title

• B60Q1/16

  illuminating the way asymmetrically · CPC title

• F21S48/1266 Primary

  Mechanical Engineering · mapped topic

• F21S48/1154

  Mechanical Engineering · mapped topic

• F21W2103/55

  Daytime running lights [DRL] · CPC title