Optical device, in particular for a motor vehicle

• US 9,441,805 B2
• Filed: 01/21/2011
• Issued: 09/13/2016
• Est. Priority Date: 01/26/2010
• Status: Active Grant

• Current Assignee: Valeo Vision (Valeo SE)
• Original Assignee: Valeo Vision (Valeo SE)
• Inventors: Godbillon, Vincent
• Primary Examiner(s): CARTER, WILLIAM JOSEPH
• Application Number:
  US13/574,915
• Publication Number:
  US 20130021813A1
• Time in Patent Office: 2,062 Days
• Field of Search: 362459-549
• US Class Current: 1/1
• CPC Class Codes: F21S 41/155 Surface emitters, e.g. organic light emitting diodes [OLED]
• CPC Class Codes: F21S 41/25 Projection lenses
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/26 Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]

Abstract

An optical device for automobile vehicles, notably a signalling and/or lighting device. The device comprises at least one surface-emitting light source, at least one lens, notably distant from the surface-emitting light source, disposed at least partially on the path of the light (R) emitted by the surface-emitting light source so as to produce an image of an object area of the surface-emitting light source.

Claims

1. An optical device for automobile vehicles, notably a signaling and/or lighting device, said optical device comprising:

at least one surface-emitting light source; and

a plurality of lenses distant from said at least one surface-emitting light source, disposed at least partially on a path of the light (R) emitted by said at least one surface-emitting light source so as to produce an image of an object area of said at least one surface-emitting light source, said at least one surface-emitting light source having said object area being substantially polygonal and of a size and dimension to provide light to each of said plurality of lenses;

wherein a light emitting area of said at least one surface-emitting light source is greater than 1 cm²;

wherein said at least one surface-emitting light source is an organic light-emitting diode that emits a substantially even distribution of light in a beam;

wherein each of said plurality of lenses is adapted to receive;

at least a portion of said substantially even distribution of light and increase a luminous intensity in a predetermined region of at least a portion of said beam.

2. The optical device claimed in claim 1, wherein said plurality of lenses associated with one or more of said at least one surface-emitting light sources have different focal lengths and/or being disposed at different distances from said at least one surface-emitting light source or sources.

3. The optical device claimed in claim 2, wherein said object area of said at least one surface-emitting light sources are disposed at different positions along an optical axis (X) of said optical device.

4. The optical device claimed in claim 2, wherein said object area has an area smaller than that of the corresponding lens.

5. The optical device claimed in claim 1, wherein said at least one surface-emitting light source or sources define(s) a plurality of object areas and said plurality of lenses each being associated with one of said plurality of object areas to form an image of one of said plurality of object areas.

6. The optical device claimed in claim 5, wherein said plurality of lenses are formed on a common part produced in one piece, for example by molding.

7. The optical device claimed in claim 1, wherein said plurality of lenses are formed on a common part produced in one piece, for example by molding.

8. The optical device claimed in claim 7, wherein said object area of said at least one surface-emitting light sources lie in substantially the same plane.

9. The optical device claimed in claim 7, wherein said object area has an area smaller than that of the corresponding lens.

10. The optical device claimed in claim 7, wherein it constitutes a motor vehicle signaling device.

11. The optical device claimed in claim 7, adapted to be used inside a passenger compartment of an automobile vehicle, for example decoration or lighting interior light or indicator lamp.

12. The optical device claimed in claim 7, wherein a light emitting area of said at least one surface-emitting light source is greater than 10 cm².

13. The optical device claimed in claim 1, wherein said object area of said at least one surface-emitting light sources lie in substantially the same plane.

14. The optical device claimed in claim 13, wherein said plurality of lenses are arranged to form images corresponding to said object area, which images are offset relative to each other along an optical axis to create an effect of depth.

15. The optical device claimed in claim 1, wherein said object area of said at least one surface-emitting light source is disposed at different positions along an optical axis (X) of said optical device.

16. The optical device claimed in claim 15, wherein said plurality of lenses are arranged to form images corresponding to said object area, which images are in substantially the same plane and/or substantially joined to each other.

17. The optical device claimed in claim 1, wherein said object area has a shape chosen from polygonal, curved, annular, oval, or the like.

18. The optical device claimed in claim 1, wherein said object area has an area smaller than that of the corresponding lens.

20. The optical device claimed in claim 1, wherein it constitutes a motor vehicle signaling device.

21. The optical device claimed in claim 1, adapted to be used inside a passenger compartment of an automobile vehicle, for example decoration or lighting interior light or indicator lamp.

22. The optical device claimed in claim 1, wherein a light emitting area of said at least one surface-emitting light source is greater than 10 cm².

23. The optical device claimed in claim 1, wherein said plurality of lenses are arranged in different planes to form images that are offset relative to each other.

19. The optical device claimed in 1, wherein said at least one surface-emitting light source is defocused axially relative to said plurality of lenses.