Optical structure with ridges arranged at the same and method for producing the same

Patent metadata

Field	Value
Publication number	US-10451832-B2
Application number	US-201514952578-A
Country	US
Kind code	B2
Filing date	Nov 25, 2015
Priority date	May 27, 2013
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

An apparatus having an optical structure and ridges is described, wherein adhesive is arranged between the ridges and the optical structure, wherein the adhesive is effective to effect, after its annealing, a predetermined orientation of the optical structure in relation to a reference plane.

First claim

The invention claimed is:

1. Apparatus comprising:
an optical structure;
at least two ridges, each connecting the optical structure to a supporting structure; and
a curable adhesive arranged between the ridges and the supporting structure, wherein the adhesive is effective, after its curing, to effect a predetermined orientation of the optical structure with regard to the reference plane;
wherein the ridges are implemented to effect, by heating the ridges, deformation of the ridges and a movement of the optical structure with regard to a reference plane; and
wherein the movement of the optical structure with regard to the reference plane counteracts a thermally induced change of an optical characteristic of the optical structure;
wherein the at least two ridges comprise a first layer and a second layer that are differently deflectable in relation to one another and wherein the first layer and/or the second layer comprise a varying thickness; or wherein the at least two ridges comprise a layer with a higher coefficient of thermal expansion than the supporting structure, and the layer exhibits a continuously varying thickness; and/or
wherein a longitudinal center line of the ridges runs past an optical axis of the optical structure.

2. Apparatus according to claim 1 , wherein the first layer and the second layer comprise different coefficients of thermal expansion.

3. Apparatus according to claim 1 , wherein the first layer extends from the optical structure to the supporting structure, and wherein the second layer covers the first layer partly or completely.

4. Apparatus according to claim 3 , wherein the second layer, which partly covers the first layer, is arranged at a distance to the optical structure and/or the supporting structure.

5. Apparatus according to claim 1 , wherein the thickness of the first layer and/or the second layer varies continuously at least across part of the length.

6. Apparatus according to claim 1 , wherein the at least two ridges comprise at least one further layer that is differently deflectable in relation to the first and the second layer.

7. Apparatus according to claim 1 , wherein the optical structure comprises an optical layer, wherein the optical layer of the optical structure and the first layer of the ridges are formed of the same material.

8. Apparatus according to claim 7 , wherein the optical structure comprises a further layer, wherein the further layer of the optical structure and the second layer of the ridges are formed of the same material.

9. Apparatus according to claim 7 , wherein the optical layer of the optical structure and the first layer of the ridges and/or the further layer of the optical structure and the second layer of the ridges are integrated.

10. Apparatus according to claim 1 , wherein the ridges and the optical structure are integrated.

11. Apparatus according to claim 1 , wherein the optical structure comprises a first layer, wherein the first layer and the layer of the ridges are formed of the same material.

12. Apparatus according to claim 11 , wherein the optical structure comprises a further layer on the first layer.

13. Apparatus according to claim 1 , comprising
one or several heating elements that are arranged on or in the ridges.

14. Apparatus according to claim 1 , wherein the supporting structure comprises a portion of the ridge material.

15. Apparatus according to claim 1 , wherein the optical structure comprises one or several optical elements.

16. Apparatus according to claim 1 , wherein the optical element comprises transparent, reflecting or absorbing areas.

17. Apparatus according to claim 15 , wherein the optical element comprises a lens, an asphere, a free-form area, a diffractive structure, a mirror, a prism or a lens array including identical or non-identical cells, each implemented as a lens, an asphere, a free-form area, a diffractive structure, a mirror or a prism, or a combination of the same.

18. Apparatus according to claim 1 comprising at least one further optical structure, wherein the further optical structure is arranged with regard to the optical structure, so that their optical axes essentially coincide.

19. Apparatus according to claim 1 , wherein a further supporting structure is adhered to the supporting structure.

20. Apparatus according to claim 1 , wherein the at least one further optical structure is arranged at the supporting structure or the optical structure via further structures.

21. Apparatus according to claim 20 , wherein the further structures are arranged at the further optical structure by adhesive.

22. Apparatus according to claim 20 , wherein the further optical structure comprises a glass layer and at least one optical element mounted on the glass layer.

23. Apparatus of claim 1 , wherein the optical structure comprises a lens, wherein the optical characteristic is a focal length of the lens.

24. Apparatus of claim 1 , wherein the optical structure comprises a lens, wherein the ridges and the lens comprise a same material and wherein at least a layer of the lens and a layer of the ridges are formed integrally.

25. Apparatus of claim 1 , wherein the optical structure comprises a lens having a first lens layer and a second lens layer, wherein the ridges comprise a first ridge layer and a second ridge layer, wherein the first lens layer and the first ridge layer are formed integrally, and wherein the second lens layer and the second ridge layer are formed integrally.

26. Apparatus according to claim 1 , wherein, by locations of the curable adhesive, new fixed anchoring points of the ridges are defined when compared to an absence of the curable adhesive.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Wippermann Frank
• Reimann Andreas
• Braeuer Andreas

Classifications

• G02B26/0866 Primary

  the reflecting means being moved or deformed by thermal means · CPC title

• G02B26/08 Primary

  for controlling the direction of light (in light guides G02B6/35) · CPC title

• G02B7/08

  adapted to co-operate with a remote control mechanism · CPC title

• G02B7/025

  using glue · CPC title

• G02B7/182

  for mirrors · CPC title