Motor vehicle headlight module for emitting a light beam

Patent metadata

Field	Value
Publication number	US-10663134-B2
Application number	US-201715483470-A
Country	US
Kind code	B2
Filing date	Apr 10, 2017
Priority date	Apr 11, 2016
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

The present invention relates to a module for a motor vehicle for emitting at least one light beam with a cut-off profile along an optical axis. The module includes first and second optical collectors adapted to collect light emitted by respective first and second light sources, and redirects the light toward a focal region. At least one of the collectors extends in the direction of the focal region in order to reflect some of the light emitted by the other collector so as to define the cut-off profile.

First claim

The invention claimed is:

1. A module for a motor vehicle for emitting at least one light beam with a cut-off profile along an optical axis, the module including at least one first light source and at least one second light source and at least one first optical collector and at least one second optical collector respectively adapted to collect light emitted by the at least one first light source and the at least one second light source and to redirect the light toward a focus of a lens disposed along the optical axis and projecting the light emitted by the at least one first optical collector and the at least one second optical collector, wherein at least one of the first optical collectors and at least one of the second optical collectors extends in the direction of the focus in order to reflect some of the light emitted by the other of the at least one of the first optical collectors and at least one of the second optical collectors so as to define the cut-off profile, wherein
the at least one of the first optical collectors and at least one of the second optical collectors extending in the direction of the focus is separated from the other of the at least one of the first optical collectors and at least one of the second optical collectors, and comprises a reflecting coating disposed on a surface thereof that reflects light emitted by the other of the at least one of the first optical collectors and at least one of the second optical collectors.

2. The module according to claim 1 , wherein at least one of the first optical collectors and at least one of the second optical collectors extending in the direction of the focus is adapted to produce the cut-off of the at least one light beam by external reflection of at least some of light emitted by the other of the at least one of the first optical collectors and at least one of the second optical collectors.

3. The module according to claim 1 , wherein the optical collector or optical collectors extending in the direction of the focus includes or include a collection region having an axis of symmetry inclined with respect to the optical axis of the module.

4. The module according to claim 1 , wherein the optical collector or optical collectors extending in the direction of the focus include a surface tangential to the optical axis of the module.

5. The module according claim 1 , wherein the at least one first light source and the at least one second light source are oriented so as to emit light in directions substantially parallel to the optical axis of the module.

6. The module according to claim 1 , including a plurality of first collectors and/or a plurality of second collectors, and wherein the plurality of the first collectors are in one piece with one another and/or the plurality of second collectors are in one piece with one another.

7. The module according to claim 1 , wherein the at least one first optical collector and the at least one optical second collector are separated by a medium having a refractive index lower than the refractive index of the optical collectors.

8. The module according to claim 1 , wherein the optical collector or optical collectors extending in the direction of the focus has or have an exit face in focus.

9. The module according to claim 1 , wherein only one of the optical collectors extends toward the focus.

Assignees

• Valeo Vision

Inventors

• Gousset-Rousseau Simon

Classifications

• F21S41/285

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

• F21S41/322

  the reflector using total internal reflection · CPC title

• F21S41/43

  characterised by the shape thereof · CPC title

• F21S41/26 Primary

  Elongated lenses · CPC title

• F21S41/60

  characterised by a variable light distribution · CPC title