Headlight lens for a vehicle headlight

Patent metadata

Field	Value
Publication number	US-9599302-B2
Application number	US-201214356242-A
Country	US
Kind code	B2
Filing date	May 15, 2012
Priority date	Nov 11, 2011
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

The invention relates to a headlight lens for a vehicle headlight, more particularly for a motor vehicle headlight, wherein the headlight lens has a body composed of a transparent material, wherein the body comprises a first light tunnel, which undergoes transition with a first bend into a light-conducting part, wherein the body comprises at least one second light tunnel, which undergoes transition with the second bend into the light-conducting part, wherein the body or the light-conducting part has a first optically active light exit surface for imaging the first bend as a bright-dark boundary, and wherein the body or the light-conducting part has a second optically active light exit surface for imaging the second bend as a bright-dark boundary.

First claim

The invention claimed is:

1. Headlight lens for a vehicle headlight, the headlight lens comprising a monolithic body from transparent material, the monolithic body comprising:
a first light tunnel, which first light tunnel, via a first bend, passes over to a first light passage section; and
at least a second light tunnel, which second light tunnel, via a second bend, passes over to a second light passage section,
wherein a portion of the surface of the first light passage section is designed as a Petzval surface,
wherein a portion of the surface of the second light passage section is designed as a Petzval surface,
wherein the first light passage section comprises a first optically effective light exit surface for imaging the first bend as a bright-dark-boundary, and wherein the second light passage section comprises a second optically effective light exit surface for imaging the second bend as a bright-dark-boundary.

2. Headlight lens as claimed in claim 1 , wherein the second optically effective light exit surface comprises an optical axis which is inclined, with respect to an optical axis of the first optically effective light exit surface by at least 4°.

3. Headlight lens as claimed in claim 1 , the first light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid and the second light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

4. Headlight lens as claimed in claim 1 , wherein a surface of the first light passage section facing the first light tunnel is curved convexly at least in the region of the first bend.

5. Headlight lens as claimed in claim 1 , wherein the second optically effective light exit surface comprises an optical axis which is inclined, with respect to an optical axis of the first optically effective light exit surface.

6. Headlight lens as claimed in claim 1 , wherein the second optically effective light exit surface comprises an optical axis which is inclined, with respect to an optical axis of the first optically effective light exit surface by at least 0.5°.

7. Headlight lens as claimed in claim 5 , the first light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid and the second light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

8. Headlight lens as claimed in claim 5 , the monolithic body further comprising:
at least a third light tunnel, which third light tunnel, via a third bend, passes over to a third light passage section, wherein the third light passage section comprises a third optically effective light exit surface for imaging the third bend as a bright-dark-boundary.

9. Headlight lens as claimed in claim 8 , wherein the third optically effective light exit surface comprises an optical axis which is inclined with respect to the optical axis of the first optically effective light exit surface and with respect to the optical axis of the second optically effective light exit surface.

10. Headlight lens as claimed in claim 9 , the first light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid, the second light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid, and the third light tunnel comprising a region on its surface which corresponds essentially to a part of the surface of an ellipsoid.

11. Headlight lens as claimed in claim 10 , wherein a surface of the first light passage section facing the first light tunnel is curved convexly at least in the region of the first bend.

12. Headlight lens as claimed in claim 8 , wherein the third optically effective light exit surface comprises an optical axis which is inclined with respect to the optical axis of the first optically effective light exit surface by at least 0.5° and with respect to the optical axis of the second optically effective light exit surface by at least 0.5°.

13. Headlight lens as claimed in claim 8 , wherein the third optically effective light exit surface comprises an optical axis which is inclined with respect to the optical axis of the first optically effective light exit surface by at least 4° and with respect to the optical axis of the second optically effective light exit surface by at least 4°.

14. Headlight lens for a vehicle headlight, the headlight lens comprising a monolithic body from transparent material, the monolithic body comprising:
a first light tunnel, which first light tunnel, via a first bend, passes over to a first light passage section; and
at least a second light tunnel, which second light tunnel, via a second bend, passes over to a second light passage section,
wherein the first light passage section comprises a first optically effective light exit surface for imaging the first bend as a bright-dark-boundary, and wherein the second light passage section comprises a second optically effective light exit surface for imaging the second bend as a bright-dark-boundary, and
the first bend being a curved transition having a radius of curvature of no less than 50 nm and of no more than 0.25 mm and the second bend being a curved transition having a radius of curvature of no less than 50 nm and of no more than 0.25 mm.

15. Headlight lens for a vehicle headlight, the headlight lens comprising a monolithic body from transparent material, the monolithic body comprising:
a first light tunnel, which first light tunnel, via a first bend, passes over to a first light passage section; and
at least a second light tunnel, which second light tunnel, via a second bend, passes over to a second light passage section,
wherein the first light passage section comprises a first optically effective light exit surface for imaging the first bend as a bright-dark-boundary, and wherein the second light passage section comprises a second optically effective light exit surface for imaging the second bend as a bright-dark-boundary,
wherein the second optically effective light exit surface comprises an optical axis which is inclined, with respect to an optical axis of the first optically effective light exit surface,
at least a third light tunnel, which third light tunnel, via a third bend, passes over to a third light passage section, wherein the third light passage section comprises a third optically effective light exit surface for imaging the third bend as a bright-dark-boundary,
wherein the third optically effective light exit surface comprises an optical axis which is inclined with respect to the optical axis of the first optically effective light exit surface and with respect to the optical axis of the second optically effective light exit surface, and
the first bend being a curved transition having a radius of curvature of no less than 50 nm and of no more than 0.25 mm, the second bend being a curved transition having a radius of curvature of no less than 50 nm and of no more than 0.25 mm and the third bend being a curved transition having a radius of curvature of no less than 50 nm and of no more than 0.25 mm.

16. Headlight lens for a vehicle headlight, the headlight lens comprising a monolithic body from transparent material, the monolithic body comprising:
a light passage section comprising:
a first optically effective light exit surface having an optical axis; and
a second optically effective light exit surface having an optical axis which is inclined with respect to the optical axis of the first optically effective

Assignees

• Fedosik Dmitry
• Wintzer Wolfram
• Docter Optics Se

Inventors

• Fedosik Dmitry
• Wintzer Wolfram

Classifications

• F21S41/27

  Thick lenses · CPC title

• F21S41/265

  Composite lenses; Lenses with a patch-like shape · CPC title

• F21S41/322

  the reflector using total internal reflection · CPC title

• F21V5/04

  of lens shape · CPC title

• F21S41/26

  Elongated lenses · CPC title