IP Library Granted Patent US 7,534,020
Granted Patent B2
US 7,534,020 · App. 10/539,840 · Granted May 19, 2009

LED headlight for a motor vehicle

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Quick Facts
Patent No.
US 7,534,020
App. No.
10/539,840
Granted
May 19, 2009
Kind
B2
Abstract

A vehicle headlight, having multiple LEDs provided on a carrier and organized into a group arrangement having an asymmetric design arrived at by starting with an overall symmetric design and providing therein at least one area with non-functional or missing LEDs; and at least one optical element functioning as a common collection lens, wherein the vertical angle of beam spread φ is less than 5° and the horizontal angle of beam spread φ is in the range of less than 20° relative to the central optical axis of the optical element.

Claims (25)

1. A vehicle headlight, comprising:

multiple LEDs provided on a carrier and organized into a group arrangement, and

at least one optical element functioning as a common collection lens,

wherein the group arrangement has an asymmetric design arrived at by starting with an overall symmetric design and providing therein at least one area with non-functional or missing LEDs,

wherein the LEDs are LED-chips disposed in a region of a focal plane of the common collection lens,

wherein the group arrangement and optical element are assembled into a LED-module, and

wherein the vertical beam spread φ of the headlight is less than 5° and the horizontal beam spread φ of the vehicle headlight lies in the range of less than 20°, said horizontal and vertical being relative to the earth.

2. The vehicle headlight according to claim 1 , wherein the group arrangement and optical element are assembled into an LED-module; and further comprising an optically transparent material cast into the LED-module.

3. The vehicle headlight according to claim 1 , wherein the LEDs are LED-chips, the LED-chips are hard wired together and this hard wiring or hard circuit is bonded to the carrier.

4. The vehicle headlight according to claim 1 , wherein LED-chips are arranged into an LED-module in a hexagonal, quadratic or square pattern.

5. The vehicle headlight according to claim 1 , wherein the asymmetric group arrangement exhibits a design which corresponds to an asymmetric distribution of the beam.

6. The vehicle headlight according to claim 1 , wherein the LEDs emits exclusively IR radiation, or IR radiation with visible light, or exclusively visible light.

7. The vehicle headlight according to claim 1 , wherein a part of the group arrangement is provided with only IR emitting and another part with visible light emitting LEDs.

8. The vehicle headlight according to claim 7 , wherein the IR and the visible light emitting LEDs are arranged in the asymmetric group arrangement.

9. The vehicle headlight according to claim 7 , wherein the only IP emitting LEDs and the visible light emitting LEDs are separated in an asymmetric group arrangement.

10. The vehicle headlight according to claim 1 , wherein the group arrangement and optical element are assembled into a LED-module; and further comprising multiple LED-modules, which are arranged in one plane.

11. The vehicle headlight according to claim 10 , wherein the LED-modules contact each other.

12. The vehicle headlight according to claim 11 , wherein the LED-modules are releasably connected with each other.

13. The vehicle headlight according to claim 10 , wherein the LED-modules are provided upon a common carrier which is shaped or has circuitry which is vehicle-specific.

14. The vehicle headlight according to claim 1 , wherein the vehicle has a curved surface, and wherein multiple of the LED-modules are provided arranged as to correspond to the curvature of a curved vehicle surface.

15. The vehicle headlight according to claim 14 , wherein the multiple LED-modules contact each other.

16. The vehicle headlight according to claim 15 , wherein the multiple LED-modules are releasably connected with each other.

17. The vehicle headlight according to claim 14 , wherein the multiple LED-modules are provided upon a common carrier which is shaped or has circuitry which is vehicle-specific.

18. The vehicle headlight according to claim 1 , wherein the multiple LED-modules are associated with a common supplemental optical element, which cooperates collectively with the lenses of each module.

19. The vehicle headlight according to claim 1 , wherein the LEDs are laser diodes or laser diodes with vertical resonators.

Assignments (2)
CHANGE OF NAME Recorded Jun 5, 2008
From: DAIMLERCHRYSLER AG
To: DAIMLER AG
Reel/Frame 021053/0466 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2006
From: MOISEL, JOERG
To: DAIMLERCHRYSLER AG
Reel/Frame 017589/0516 →