Headlight for a vehicle

• US 6,220,736 B1
• Filed: 07/09/1998
• Issued: 04/24/2001
• Est. Priority Date: 07/10/1997
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Wulf, Juergen, Boebel, Doris, Dobler, Karl-Otto, Nagel, Klaus, Schuster, Kurt, Schien, Andreas
• Primary Examiner(s): Spyrou, Cassandra
• Assistant Examiner(s): Treas, Jared
• Application Number:
  US09/112,893
• Time in Patent Office: 1,020 Days
• Field of Search: 362/300, 362/309, 362/329, 362/338, 362/520, 362/538, 362/539, 362/342, 362/346, 362/332, 359/457, 359/742
• US Class Current: 362/539
• CPC Class Codes: F21S 41/25 Projection lenses
• CPC Class Codes: F21S 41/28 Cover glass

Abstract

A headlight for a vehicle has a reflector, a light source, a lens through which a light reflected by the reflector passes, and at least one element which surrounds the lens at least over a part of its periphery and is at least partially light permeable so that the light emitted by the light source and not engaged by the reflector passes through the element and is collected, the element being provided with ring-shaped optical profiles which form a Fresnel lens.

Claims

1. A headlight for a vehicle, comprising a reflector;

a light source;

a lens through which light reflected by said reflector passes;

a supporting element extending between said reflector and said lens and holding said lens;

at least one element which surrounds said lens at least over a part of a periphery thereof and is at least partially light permeable;

said supporting element having at least one opening formed such that light emitted by said light source and not captured by said reflector passes directly there-through, and said at least one element being provided with ring-shaped optical profiles so that the light passing through said at least one opening of said supporting element passes through said at least one element and is collected; and

a partially reflecting layer facing a light outlet direction and arranged only in a beam path of the light which passes through said at least one element.

2. A headlight as defined in claim 1;

and further comprising a light permeable disk arranged after said element in the light outlet direction and having a side facing the light outlet direction, said layer being formed as a coating arranged on said side of said disk and surrounding said lens at least over a part of its periphery.

3. A headlight as defined in claim 2, wherein said coating is partially reflective and partially light permeable.

4. A headlight as defined in claim 1, wherein said element has a side which faces a light outlet direction and away from said reflector, said layer being formed as a coating applied on said side of said element.

5. A headlight as defined in claim 1, wherein said element is formed as a substantially flat element.

6. A headlight as defined in claim 1, wherein said element is formed as a substantially curved element.

7. A headlight as defined in claim 1, wherein said element has a side facing in a light outlet direction and away from said reflector and is provided with raised profiles on said side;

and further comprising at least partially reflective coating applied on said profiles.

8. A headlight as defined in claim 7, wherein said profiles have flattenings which face in the light outlet direction, said coating being applied on said flattenings.

9. A headlight as defined in claim 7, wherein said profiles extend over said element in a ring-shaped manner.

10. A headlight as defined in claim 7, wherein said profiles are at least substantially straight and at least substantially horizontal.

11. A headlight as defined in claim 7, wherein said profiles are at least substantially straight and at least substantially vertical.

12. A headlight as defined in claim 7, wherein said profiles are formed so that a light which passes through said profiles is deviated.

13. A headlight as defined in claim 1, wherein said layer is formed as a coating selected from the group consisting of a printed coating and an impregnated coating applied on said element.

14. A headlight as defined in claim 1, wherein said coating is formed as a coating selected from the group consisting of a printed coating and an impregnated coating applied on said disk.

15. A headlight as defined in claim 1;

and further comprising at least one additional reflector which is arranged between said first mentioned reflector and said element so that the light which is emitted by said light source and not captured by said reflector is at least partially reflected by said additional reflector and passes through said element.