Lighting module comprising movable mirrors

Patent metadata

Field	Value
Publication number	US-2017321861-A1
Application number	US-201715586703-A
Country	US
Kind code	A1
Filing date	May 4, 2017
Priority date	May 4, 2016
Publication date	Nov 9, 2017
Grant date	—

Abstract

Lighting module for an automobile, comprising a reflector having at least two surface portions, at least one of the surface portions being movable, and at least two light sources, each light source being associated with one of the surface portions in order to generate a primary light beam by reflection of the light output from said source. The lighting module is configured for a surface portion to be movable and to have a movement which causes a variation in the coverage between the light beams generated by the lighting module.

First claim

1 : Lighting module for an automobile, comprising a reflector having at least two surface portions, at least one of the surface portions being movable, and at least two light sources, each light source being associated with one of the surface portions in order to generate a primary light beam by reflection of the light output from said source;
wherein said at least one movable surface portion is able to be displaced:
to a first position such that the surface portions assume a first configuration in which the primary light beams are reflected in order to be superimposed in a first global beam having a maximum intensity greater than a first given threshold value;
to a second position such that the surface portions assume a second configuration in which the primary light beams are reflected in order to be superimposed in a second global beam having a maximum intensity lower than a second given threshold value;
the first given threshold value being 10 times greater than the second given threshold value.

2 : Lighting module according to claim 1 , in which movement of the movable portion from the first position toward the second position is designed to shift the primary beam produced by the movable portion in relation to the primary beam produced by another portion of the reflector, in such a way as to reduce the coverage of the primary beams and the maximum intensity of the global beam produced by superimposing the primary beams.

3 : Lighting module according to claim 1 , wherein movement of the movable portion from the first position toward the second position is designed to move a focus of said movable portion away from the position of the light source associated with the movable portion.

4 : Lighting module according to claim 1 , wherein the first position of the movable portion is a position in which the light source associated with the movable portion is disposed substantially in the focus of the movable portion.

5 : Lighting module according to claim 1 , wherein the second position of the movable portion is a position in which the light source associated with the movable portion is disposed substantially outside the focus of the movable portion.

6 : Lighting module according to claim 1 , wherein the reflector comprises at least three movable surface portions, in particular four, and in which each portion is movable in relation to the light source associated therewith.

7 : Lighting module according to claim 1 , wherein the light sources are semiconductor light-emitting chips.

8 : Lighting module according to claim 7 , wherein the light sources are formed by ends of light guides, other respective ends of the guides being connected to the emitting chips.

9 : Lighting module according to claim 1 , comprising at least three surface portions, wherein: at least one first portion, in particular two, is configured to generate a flat primary beam by reflection; at least a second portion is configured to generate a range primary beam by reflection; at least one third portion is configured to generate a primary beam having an oblique cut-off by reflection.

10 : Lighting module according to claim 9 , wherein the first, second and third portions are movable such as to be able to be displaced from the first to the second position, and wherein a first global beam produced by superimposing the flat, range and oblique primary beams, when the first, second and third portions are in the first position, is a beam of the regulatory low beam type.

11 : Lighting module according to claim 10 , wherein the first, second and third portions are movable such as to be able to be displaced from the first to the second position, and in which a second global beam produced by superimposing the flat, range and oblique primary beams, when the first, second and third portions are in the second position, is a beam of the regulatory daytime lamp type.

12 : Lighting module according to claim 1 , wherein at least one surface portion is a complex surface, said complex surface comprising a section having a first lower portion having a first focus arranged in such a way that light rays emitted from this first focus are returned below a predetermined line, and
comprising a second upper portion having a second focus, separate from the first focus, arranged in such a way that light rays emitted from this second focus are returned below said predetermined line.

13 : Lighting module according to claim 12 , wherein the light source associated with the complex surface portion is disposed at the barycenter of said first and second focuses, the barycenter constituting the focus of the surface portion.

14 : Lighting module according to claim 1 , wherein at least one surface portion has a section with a parabolic profile.

15 : Lighting module according to claim 1 , wherein the lighting module comprises a device for controlling the electrical supply of the light sources, designed to reduce the electrical power provided to at least one light source when the movable portion is displaced from the first position toward the second position.

16 : Lighting module according to claim 2 , wherein movement of the movable portion from the first position toward the second position is designed to move a focus of said movable portion away from the position of the light source associated with the movable portion.

17 : Lighting module according to claim 3 , wherein the first position of the movable portion is a position in which the light source associated with the movable portion is disposed substantially in the focus of the movable portion.

18 : Lighting module according to claim 4 , wherein the second position of the movable portion is a position in which the light source associated with the movable portion is disposed substantially outside the focus of the movable portion.

19 : Lighting module according to claim 5 , wherein the reflector comprises at least three movable surface portions, in particular four, and in which each portion is movable in relation to the light source associated therewith.

20 : Lighting module according claim 6 , wherein the light sources are semiconductor light-emitting chips.

Assignees

• Valeo Vision

Inventors

• Meyrenaud Jean-Luc

Classifications

• F21V7/09

  with a combination of different curvatures · CPC title

• F21S41/24

  Light guides · CPC title

• B60Q1/06 Primary

  adjustable, e.g. remotely-controlled from inside vehicle (B60Q1/05 takes precedence) · CPC title

• G02B6/0008

  the light being emitted at the end of the fibre · CPC title

• B60Q1/14

  having dimming means · CPC title