MOTOR-VEHICLE HEADLIGHT

• US 20080094851A1
• Filed: 10/25/2007
• Published: 04/24/2008
• Est. Priority Date: 04/29/2005
• Status: Active Grant

• Current Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Original Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Inventors: Lang, Kurt, Huber, Rainer, Hofmann, Markus, Wanninger, Mario, Engl, Moritz, Grotsch, Stefan
• Granted Patent: US 8,096,689 B2
• Time in Patent Office: Days
• US Class Current: 362/514
• CPC Class Codes: F21S 41/143 the main emission direction of the LED being parallel to the optical axis of the illuminating device
• CPC Class Codes: F21S 41/147 the main emission direction of the LED being angled to the optical axis of the illuminating device
• CPC Class Codes: F21S 41/16 Laser light sources
• CPC Class Codes: F21S 41/43 characterised by the shape thereof
• CPC Class Codes: F21S 41/635 by moving refractors, filters or transparent cover plates
• CPC Class Codes: F21S 41/645 by electro-optic means, e.g. liquid crystal or electrochromic devices
• CPC Class Codes: F21S 41/657 by moving light sources
• CPC Class Codes: F21S 41/675 by moving reflectors
• CPC Class Codes: F21S 43/255 Filters
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A motor-vehicle headlight is specified, having at least one light-emitting diode, and an apparatus for controllable manipulation of the beam path of the electromagnetic radiation emitted from the light-emitting diode. The described motor-vehicle headlight is distinguished inter alia by a particularly variable emission characteristic.

Claims

1. Motor-vehicle headlight, comprising:

at least one light-emitting diode, and

an apparatus for controllable manipulation of the beam path of the electromagnetic radiation emitted from the light-emitting diode.

2. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for reflection of the electromagnetic radiation emitted from the light-emitting diode.

3. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for refraction of the electromagnetic radiation emitted from the light-emitting diode.

4. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for scattering the electromagnetic radiation emitted from the light-emitting diode.

5. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for absorption of the electromagnetic radiation emitted from the light-emitting diode.

6. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for conversion of electromagnetic radiation frequency emitted from the light-emitting diode.

7. Motor-vehicle headlight according to claim 1,

in which the apparatus is suitable for filtering of the electromagnetic radiation emitted from the light-emitting diode.

8. Motor-vehicle headlight according to one claim 1,

in which the apparatus comprises a deflection mirror.

9. Motor-vehicle headlight element according to claim 8,

in which the deflection mirror is mounted such that it can rotate.

10. Motor-vehicle headlight according to claim 8,

in which the deflection mirror comprises a polygonal wheel mirror.

11. Motor-vehicle headlight element according to claim 10,

in which the polygonal wheel mirror has at least two mirror surfaces.

12. Motor-vehicle headlight according to claim 10,

in which the polygonal wheel mirror is mounted such that it can rotate, in such a way that different mirror surfaces can be illuminated by rotation of the mirror.

13. Motor-vehicle headlight element according to claim 1,

in which the apparatus comprises a wedge-shaped pane.

14. Motor-vehicle headlight according to claim 13,

in which the wedge-shaped pane can be moved in the beam path of the light-emitting diode.

15. Motor-vehicle headlight element according to claim 1,

in which the apparatus comprises an element whose optical characteristics can be adjusted by application of an electrical voltage.

16. Motor-vehicle headlight according to claim 15,

in which the element is made of an electrochromic material.

17. Motor-vehicle headlight according to claim 15,

in which the element is made of self-darkening glass.

18. Motor-vehicle headlight according to claim 15,

in which the element comprises a switchable diffuser pane.

19. Motor-vehicle headlight according to claim 18,

in which the degree of scatter of electromagnetic radiation by the diffuser pane is dependent on the electrical voltage applied to the diffuser pane.

20. Motor-vehicle headlight element according to claim 15,

in which the refractive index of the element is dependent on the voltage.

21. Motor-vehicle headlight element according to claim 1,

in which the apparatus is suitable for variation of the position of the light-emitting diode relative to an optical element.

22. Motor-vehicle headlight element according to claim 21,

in which the optical element comprises at least one lens.

23. Motor-vehicle headlight element according to claim 1, further comprising

at least two light-emitting diodes, which are arranged in such a manner that they are suitable for illumination of different spatial angle areas.

24. Motor-vehicle headlight element according to claim 23, further comprising

having a switching apparatus which is suitable for switching light-emitting diodes as a function of the direction of travel of the motor vehicle.