ONE-PIECE SUPPORT FOR LIGHT DEVICE WITH A MATRIX OF MICROMIRRORS

• US 20180087739A1
• Filed: 09/28/2017
• Published: 03/29/2018
• Est. Priority Date: 09/28/2016
• Status: Active Grant

• Current Assignee: Valeo Vision (Valeo SE)
• Original Assignee: Valeo Vision (Valeo SE)
• Inventors: LI, Joel, CHANEZ, Sylvain
• Granted Patent: US 10,619,818 B2
• Time in Patent Office: Days
• CPC Class Codes: F21S 41/39 Attachment thereof achieving variable light distribution by movable reflectors F21S41/675
• CPC Class Codes: F21S 41/675 by moving reflectors
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/19 Attachment of light sources or lamp holders
• 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: F21S 43/31 Optical layout thereof
• CPC Class Codes: F21S 43/37 Attachment thereof
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 5/002 using microoptical elements for redirecting or diffusing light
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The subject of the invention is a support for a light module, notably for a motor vehicle, including a reception zone for at least one light source. A reception zone for an optical device for forming the light is emitted by the light source or sources. A reception zone for an electromechanical microsystem with at least one mirror capable for receiving the rays originates from the optical forming device. A reception zone for at least one optical projection device receives the rays reflected by the mirror or mirrors of the electromechanical microsystem. The support forms a cavity with an aperture and comprises an outer surface around said aperture, said surface forming the reception zone for the electromechanical microsystem.

Claims

1. Support for a light module, notably for a motor vehicle, comprising:

a reception zone for at least one light source;

a reception zone for an optical device for forming the light emitted by the light source or sources;

a reception zone for an electromechanical microsystem with at least one mirror capable of receiving the rays originating from the optical forming device; and

a reception zone for at least one optical projection device receiving the rays reflected by the mirror or mirrors of the electromechanical microsystem;

wherein

the support forms a cavity (30) with an aperture and comprises an outer surface around said aperture, said surface forming the reception zone for the electromechanical microsystem.

2. Support according to claim 1, wherein the support comprises a body made of a single piece, preferentially of aluminum, said body forming the reception zones for the light source or sources (16), for the optical forming device and for the optical projection device.

3. Support according to claim 2, wherein the support comprises a plate that can be fixed to the body in order to partially seal the cavity and comprising the reception zone for the electromechanical microsystem.

4. Support according to claim 1, wherein the cavity is covered with antireflection and/or absorbent coating, preferentially black.

5. Support according to claim 1, wherein the cavity is delimited by the reception zone for the optical forming device and the reception zone (10.4) for the optical projection device.

6. Support according to claim 1, wherein at least one, preferentially each, of the reception zones for the optical forming device and the optical projection device comprises an orifice formed in the support and a shoulder around said orifice.

7. Support according to claim 1, wherein it comprises, within the cavity, a tongue overhanging and with an orifice intended to be passed through by the light reflected by the electromechanical microsystem toward the optical projection device.

8. Light device, notably for a motor vehicle, comprising:

a support;

at least one light source disposed on the support;

an optical device for forming the light emitted by the light source or sources, said device being disposed on the support;

an electromechanical microsystem with at least one mirror capable of receiving the rays originating from the optical forming device, said microsystem being disposed on the support; and

an optical projection device capable of receiving the light reflected by the mirror or mirrors of the electromechanical microsystem, said device being disposed on the support;

wherein the support conforms to claim 1.

9. Device according to claim 8, wherein the light source or sources, the optical forming device and the microsystem form a first optical axis, and said microsystem and the optical projection device form a second optical axis, the angle between said optical axes lying between 40°

and 65°

, preferentially between 45° and

60°

.

10. Device according to claim 8, wherein the light source or sources are of the light-emitting diode type on a board disposed on a heat sink fixed to the reception zone for said light source or sources.

11. Device according claim 8, wherein the optical forming device comprises a forming lens which is biconvex and/or the projection device comprises a first lens which is biconvex and a second lens which is biconcave.

12. Device according to claim 11, wherein at least one of the lenses of the optical forming device or the optical projection device is held in place by a flange.

13. Device according to claim 8, wherein the optical forming device has a diameter greater than two times, preferentially three times, that of the optical projection device.

14. Device according to claim 8, wherein the electromechanical microsystem is on a printed circuit board, said board being fixed to the support so as to press said microsystem against the reception zone for said microsystem.

15. Device according to claim 8, wherein it is a rear signaling light capable of forming pictograms in the light beam produced, said pictograms being a function of a programming of the microsystem.

16. Support according to claim 2, wherein the cavity is covered with antireflection and/or absorbent coating, preferentially black.

17. Support according to claim 2, wherein the cavity is delimited by the reception zone for the optical forming device and the reception zone for the optical projection device.

18. Support according to claim 2, wherein at least one, preferentially each, of the reception zones for the optical forming device and the optical projection device comprises an orifice formed in the support and a shoulder around said orifice.

19. Support according to claim 2, wherein it comprises, within the cavity, a tongue overhanging and with an orifice intended to be passed through by the light reflected by the electromechanical microsystem toward the optical projection device.

20. Light device, notably for a motor vehicle, comprising:

a support;

at least one light source disposed on the support;

an optical device for forming the light emitted by the light source or sources, said device being disposed on the support;

an electromechanical microsystem with at least one mirror capable of receiving the rays originating from the optical forming device, said microsystem being disposed on the support; and

an optical projection device capable of receiving the light reflected by the mirror or mirrors of the electromechanical microsystem, said device being disposed on the support wherein the support conforms to claim 2.