Lens arrangement, in particular a spectacle glass arrangement and method for producing a lens arrangement

Patent metadata

Field	Value
Publication number	US-10690941-B2
Application number	US-201615758336-A
Country	US
Kind code	B2
Filing date	Sep 7, 2016
Priority date	Sep 7, 2015
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

Disclosed is a lens arrangement, in particular a spectacle lens arrangement, having a base lens element, wherein the base lens element has a first surface and wherein the first surface has a first optically effective region, wherein the first surface has an elongate recess and wherein the elongate recess extends adjacent to the first optically effective region and at least partly encompasses the first optically effective region. Moreover, methods for producing a lens arrangement are disclosed.

First claim

The invention claimed is:

1. A lens arrangement, comprising:
a base lens element, the base lens element defining a first surface,
wherein the first surface includes a first optically effective region,
wherein the first surface includes an elongate recess, and
wherein the elongate recess at least partly encompasses the first optically effective region.

2. The lens arrangement as claimed in claim 1 , wherein the elongate recess extends adjacent to the first optically effective region.

3. The lens arrangement as claimed in claim 1 , wherein the base lens element includes a front surface, a back surface, and an edge area, wherein the first surface is the front surface or the back surface of the base lens element.

4. The lens arrangement as claimed in claim 1 , wherein the base lens element has an integral embodiment.

5. The lens arrangement as claimed in claim 1 , wherein the elongate recess completely encompasses the optically effective region.

6. The lens arrangement as claimed in claim 1 , wherein the elongate recess has a constant cross-sectional profile transversely to its longitudinal extent.

7. The lens arrangement as claimed in claim 1 , wherein the elongate recess has a cross-sectional profile that varies along its longitudinal extent transversely to the longitudinal extent.

8. The lens arrangement as claimed in claim 1 , wherein a circumferential contour of the optically effective region is circular.

9. The lens arrangement as claimed in claim 1 , wherein a circumferential contour of the optically effective region is rectangular.

10. The lens arrangement as claimed in claim 1 , wherein the first optically effective region is a lenticular region of the base lens element.

11. The lens arrangement as claimed in claim 1 , wherein the first optically effective region is a Fresnel surface region with a Fresnel surface structure.

12. The lens arrangement as claimed in claim 11 , wherein the Fresnel surface region includes a plurality of Fresnel sloped elevations with incision regions lying therebetween, wherein the Fresnel sloped elevations are coated.

13. The lens arrangement as claimed in claim 11 , wherein the Fresnel surface region includes a plurality of Fresnel sloped elevations with incision regions lying therebetween, wherein a depth of the elongate recess is greater than a depth of the incision regions or equals a depth of the incision regions.

14. The lens arrangement as claimed in claim 11 , wherein the Fresnel surface region is covered by a filler material portion, wherein the filler material portion extends into the elongate recess.

15. The lens arrangement as claimed in claim 14 , wherein the base lens element is formed from a base lens material, wherein the filler material portion is formed from a filler material that differs from the base lens material and wherein the refractive index of the base lens material and the refractive index of the filler material are identical at the same reference wavelength.

16. The lens arrangement as claimed in claim 1 , wherein a circumferential contour of the first optically effective region is rectangular, wherein the elongate recess encompasses the optically effective region on only three sides of the rectangular circumferential contour.

17. The lens arrangement as claimed in claim 1 , wherein the lenticular region is covered by a further optical element, wherein the further optical element is attached to the lenticular region via an adhesive portion and wherein the adhesive portion extends beyond the lenticular region into the elongate recess.

18. The lens arrangement as claimed in claim 17 , wherein the adhesive portion completely fills the elongate recess.

19. The lens arrangement as claimed in claim 1 , wherein the elongate recess has a cross-sectional profile transversely to its longitudinal extent, wherein a minimum radius of the cross-sectional profile is greater than or equal to 0.05 mm.

20. The lens arrangement as claimed in claim 1 , wherein the elongate recess is a first elongate recess, wherein the first surface moreover has a second elongate recess, and wherein the second elongate recess extends adjacent to the first optically effective region, opposite to the first elongate recess.

21. The lens arrangement as claimed in claim 1 , wherein a second optically effective region is arranged in the first optically effective region, wherein the first optically effective region is a lenticular region of the base lens element and wherein the second optically effective region is a Fresnel surface region with a Fresnel surface structure, and wherein an elongate recess in each case extends adjoining the second optically effective region and at least partly encompasses the respective optically effective region.

22. The lens arrangement as claimed in claim 21 , wherein the Fresnel surface region is covered by a filler material portion, wherein a surface of the filler material portion and a surface of the lenticular region merge into one another in a continuous fashion.

23. The lens arrangement as claimed in claim 22 , wherein the lenticular region is covered by a further optical element, wherein the further optical element is attached to the lenticular region by means of an adhesive portion.

24. A display apparatus including at least one lens arrangement as claimed in claim 1 .

25. The lens arrangement as claimed in claim 1 , wherein the elongate recess is adapted to take up an excess adhesive applied to the first optically effective region.

26. A lens arrangement, comprising:
a base lens element, wherein the base lens element defines a surface,
wherein the surface includes a Fresnel surface region with a Fresnel surface structure,
wherein the Fresnel surface region includes a plurality of Fresnel sloped elevations with incision regions lying therebetween for providing the Fresnel surface structure,
wherein the surface includes an elongate recess,
wherein the elongate recess extends adjacent to the Fresnel surface structure and connects the incision regions to one another, and
wherein a depth of the recess into the surface is greater than a depth of the incision regions into the surface.

27. The lens arrangement as claimed in claim 26 , wherein, the elongate recess extends adjacent to the Fresnel surface structure and connects the incision regions to one another, such that a level of a filler material or of an adhesive can be compensated over the entire elongate recess and the Fresnel surface region.

28. A method for producing a lens arrangement, comprising:
providing a base lens element with a first surface, wherein the first surface includes a lenticular region and an elongate recess, and wherein the elongate recess at least partly encompasses the lenticular region;
at least one of:
applying a liquid adhesive onto the lenticular region such that the adhesive completely covers the lenticular region and extends into the elongate recess, and
applying the liquid adhesive onto a further optical element which completely covers the lenticular region;

applying the further optical element which completely covers the lenticular region onto the base lens element; and
curing the adhesive.

29. The method as claimed in claim 28 , further comprising filling the elongate recess with the adhesive following the step of applying the liquid adhesive onto the lenticular region.

Assignees

• tooz technologies GmbH

Inventors

• Puetz Joerg
• Prochnau Jens
• Meschenmoser Ralf

Classifications

• G02C7/086 Primary

  Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B27/017

  Head mounted · CPC title

• G02B3/08

  with discontinuous faces, e.g. Fresnel lens {(diffractive Fresnel lenses G02B5/1876)} · CPC title

• G02C2202/20

  Diffractive and Fresnel lenses or lens portions · CPC title