Headlight Module

• US 20130058114A1
• Filed: 05/06/2011
• Published: 03/07/2013
• Est. Priority Date: 05/12/2010
• Status: Abandoned Application

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG)
• Inventors: Reiners, Thomas
• Application Number:
  US13/697,782
• Publication Number:
  US 20130058114A1
• Time in Patent Office: Days
• US Class Current: 362/510
• CPC Class Codes: F21S 41/13 Ultraviolet light; Infrared light
• CPC Class Codes: F21S 41/16 Laser light sources
• CPC Class Codes: F21S 41/176 Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
• CPC Class Codes: F21S 41/255 Lenses with a front view of circular or truncated circular outline
• CPC Class Codes: F21S 41/285 Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
• CPC Class Codes: F21S 41/663 by switching light sources by switching incandescent light sources F21S41/162
• CPC Class Codes: F21S 41/675 by moving reflectors
• CPC Class Codes: F21S 45/43 using gas
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21S 45/70 Prevention of harmful light leakage

Abstract

A headlight module comprising at least one phosphor which can be excited to emit light by means of electromagnetic radiation; at least one radiation source for exciting the at least one phosphor; at least one carrier device for the at least one phosphor; and at least one beam directing device which is disposed such that it directs electromagnetic radiation emitted by the at least one radiation source onto the at least one phosphor.

Claims

1. A headlight module comprising:

at least one phosphor which can be excited to emit light by means of electromagnetic radiation;

at least one radiation source for exciting the at least one phosphor;

at least one carrier device for the at least one phosphor; and

at least one beam directing device which is disposed such that it directs electromagnetic radiation emitted by the at least one radiation source onto the at least one phosphor.

2. The headlight module as claimed in claim 1, wherein the headlight module additionally comprises at least one at least partially transparent optical device which is disposed in the path of the radiation emitted by the at least one phosphor.

3. The headlight module as claimed in claim 1, wherein the at least one carrier device is of transparent design and is mounted on an optical filter device which is designed to at least partially reflect radiation emitted by the at least one phosphor.

4. The headlight module as claimed in claim 3, wherein the at least one beam directing device is disposed such that radiation emitted by the at least one radiation source passes through the optical filter device and the carrier device before it is incident on the phosphor.

5. The headlight module as claimed in claim 1, wherein the at least one carrier device is designed to reflect radiation emitted by the at least one phosphor and/or radiation emitted by the at least one radiation source.

6. The headlight module as claimed in claim 5, wherein the at least one beam directing device is disposed such that radiation emitted by the at least one radiation source is incident on a side of the phosphor facing away from the carrier device of the phosphor.

7. The headlight module as claimed in claim 5, wherein the at least one carrier device is thermally connected to a cooling device.

8. The headlight module as claimed in claim 5, wherein the at least one carrier device is implemented as a heat sink.

9. The headlight module as claimed in claim 1, wherein the at least one beam directing device comprises a micromirror device.

10. The headlight module as claimed in claim 1, wherein the at least one phosphor is applied as a coating to the surface of the carrier device.

11. The headlight module as claimed in claim 1, wherein the headlight module comprises at least one beam splitter device which is disposed between the at least one radiation source and the at least one beam directing device.

12. The headlight module as claimed in claim 1, wherein the headlight module additionally comprises a control device for the at least one radiation source and/or the at least one beam directing device.

13. The headlight module as claimed in claim 9, comprising a control device for the at least one radiation source and/or the at least one beam directing device, wherein the control device is configured to control at least one micromirror of the micromirror device such that it assumes predefinable spatial positions or orientations.

14. The headlight module as claimed in claim 13, wherein the control device is additionally configured to switch the radiation source on or off depending on the position or orientation of the at least one micromirror.

15. The headlight module as claimed in claim 1, preceding claims, wherein the optical device comprises at least one reflection device which is designed such that at least radiation emitted by the at least one phosphor is incident on the at least one reflection device.

16. The headlight module as claimed in claim 1, wherein the optical device comprises at least one aspherical lens and/or freeform lens.

17. The headlight module as claimed in claim 1, wherein the radiation source is at least one laser diode or a laser diode array.

18. The headlight module as claimed in claim 1, wherein a safety device is provided for automatic deactivation of the radiation source if the headlight housing is open.

19. A vehicle headlight having a headlight module as claimed in claim 1.