Interior lighting system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10696219-B2
Application number	US-201916368237-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	Mar 30, 2018
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

An interior lighting system for a vehicle, including two optical modules, each optical module including a plurality of selectively activatable light sources, a primary optical element including primary members, each arranged to face one of the light sources respectively, for collecting the rays emitted by the corresponding source, the primary optical element being configured to form an elementary beam which is dependent on the rays emitted, and a secondary optical element for projecting the elementary beam into an area of the passenger compartment. According to the invention, the optical modules are configured so that the two projected elementary beams are at least partially superimposed on one another in the area of the passenger compartment.

First claim

The invention claimed is:

1. An interior lighting system for a vehicle, the interior lighting system comprising two optical modules, each optical module comprising:
a plurality of selectively activatable light sources;
a primary optical element comprising primary members, each primary member arranged to face one of the light sources respectively, for collecting the rays emitted by the corresponding light source, the primary optical element being configured to form an elementary beam; and
a secondary optical element for projecting the elementary beam into an area of a passenger compartment, wherein
the optical modules are configured so that the two projected elementary beams are at least partially superimposed on one another in the area of the passenger compartment, wherein
the optical modules are configured so that the two projected elementary beams which are at least partially superimposed on one another have complementary shapes, the shape of a first elementary beam being the negative of the other elementary beam when all the light sources are activated.

2. The interior lighting system according to claim 1 , wherein the optical modules are arranged so as to operate in a direct imaging mode, with direct stacking of the light sources and the primary members.

3. The interior lighting system according to claim 1 , wherein the optical modules each have a respective optical axis and are arranged so that their optical axes are not parallel to one another.

4. The interior lighting system according to claim 1 , wherein optical axes of the optical modules are inclined relative to one another at an angle of between 0.5° and 3°.

5. The interior lighting system according to claim 1 , wherein optical axes of the optical modules are inclined relative to a vertical axis of the vehicle at an angle of between 5° and 15°.

6. The interior lighting system according to claim 1 , wherein the primary members and the primary optical element of at least one optical module form a single piece.

7. The interior lighting system according to claim 1 , wherein the primary members of a first optical module are arranged to form a first matrix array and the primary members of a second optical module are arranged to form a second matrix array, the first and second matrix arrays having complementary shapes.

8. The interior lighting system according to claim 2 , wherein when all the light sources are activated, illuminated areas of a first elementary beam are superimposed on dark areas of the other elementary beam, at least one illuminated area of the first elementary beam also extending so as to partially cover at least one illuminated area of the other elementary beam adjacent to the dark area of the elementary beam which is covered by the at least one illuminated area of the first elementary beam.

9. The interior lighting system according to claim 2 , wherein the optical modules each have a respective optical axis and are arranged so that their optical axes are not parallel to one another.

10. The interior lighting system according to claim 2 , wherein optical axes of the optical modules are inclined relative to one another at an angle of between 0.5° and 3°.

11. The interior lighting system according to claim 2 , wherein optical axes of the optical modules are inclined relative to a vertical axis of the vehicle at an angle of between 5° and 15°.

12. The interior lighting system according to claim 2 , wherein the primary members and the primary optical element of at least one optical module form a single piece.

13. The interior lighting system according to claim 2 , wherein the primary optical elements of the two optical modules form a single piece.

14. The interior lighting system according to claim 2 , wherein the primary members of a first optical module are arranged to form a first matrix array and the primary members of a second optical module are arranged to form a second matrix array, the first and second matrix arrays having complementary shapes.

15. An interior lighting system for a vehicle, the interior lighting system comprising two optical modules, each optical module comprising:
a plurality of selectively activatable light sources;
a primary optical element comprising primary members, each primary member arranged to face one of the light sources respectively, for collecting the rays emitted by the corresponding light source, the primary optical element being configured to form an elementary beam; and
a secondary optical element for projecting the elementary beam into an area of a passenger compartment, wherein
the optical modules are configured so that the two projected elementary beams which are at least partially superimposed on one another have complementary shapes so that, when all the light sources are activated, illuminated areas of a first elementary beam are superimposed on dark areas of the other elementary beam, at least one illuminated area of the first elementary beam also extending so as to partially cover at least one illuminated area of the other elementary beam adjacent to the dark area of the elementary beam which is covered by the at least one illuminated area of the first elementary beam.

16. An interior lighting system for a vehicle, the interior lighting system comprising two optical modules, each optical module comprising:
a plurality of selectively activatable light sources;
a primary optical element comprising primary members, each primary member arranged to face one of the light sources respectively, for collecting the rays emitted by the corresponding light source, the primary optical element being configured to form an elementary beam; and
a secondary optical element for projecting the elementary beam into an area of a passenger compartment, wherein
the primary optical elements of the two optical modules form a single piece.

Assignees

• Valeo Vision

Inventors

• Fleurence Thierry
• Ez-Zouaq Kaoutar
• Boiroux Nicolas
• Rasoldier Nirina
• Xue Jingjing
• Robert Arnaud

Classifications

• F21Y2105/14

  characterised by the overall shape of the two-dimensional [2D] array · CPC title

• B60Q3/76

  for spotlighting, e.g. reading lamps (spotlighting on or for specific fittings B60Q3/20; spotlighting in mass transit vehicles B60Q3/44) · CPC title

• F21Y2105/12

  characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• B60Q3/74

  for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps (general lighting mounted on specific fittings B60Q3/20; general lighting for mass transit vehicles B60Q3/43) · CPC title