Wide-angle optical unit for ophthalmological implants

• US 9,345,570 B2
• Filed: 07/18/2013
• Issued: 05/24/2016
• Est. Priority Date: 07/23/2012
• Status: Active Grant

• Current Assignee: Karlsruher Institut Fur Technologie
• Original Assignee: Karlsruher Institut Fur Technologie
• Inventors: Sieber, Ingo, Guth, Helmut, Bretthauer, Georg, Gengenbach, Ulrich, Guthoff, Rudolf F.
• Primary Examiner(s): Willse, David H
• Assistant Examiner(s): SHIPMON, TIFFANY P
• Application Number:
  US14/415,160
• Publication Number:
  US 20150190224A1
• Time in Patent Office: 1,041 Days
• Field of Search: 623/6.22, 623/6.26
• US Class Current: 1/1
• CPC Class Codes: A61F 2/1629 for changing longitudinal position, i.e. along the visual axis when implanted
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2/1656 Fresnel lenses, prisms or plates
• CPC Class Codes: A61F 2002/1699 Additional features not otherwise provided for

Abstract

A wide-angle optical unit for ophthalmological implants in the eye includes a lens system arranged in a rotationally symmetrical manner about an optical axis and further includes at least two lenses that rest one on top of the other in a planar manner and which are made of materials having different optical refractive indices. In addition, the wide-angle optical unit includes an optical decoupling structure and a trailing lens arranged proximally with respect to the interior of the eye. The trailing lens is mounted around the optical decoupling structure.

Claims

1. A wide-angle optical unit for ophthalmological implants in an eye, comprising:

a lens system arranged in a rotationally symmetrical manner about an optical axis;

at least two lenses that rest one on top of the other in a planar manner and that are made of materials having different optical refractive indices,

a trailing lens arranged proximally with respect to the interior of the eye; and

an optical decoupling structure mounted around the trailing lens.

2. The wide-angle optical unit according to claim 1, further comprising at least one of a mechanically shiftable lens combination and a lens body having an adjustable focal length.

3. The wide-angle optical unit according to claim 2, wherein at least one of the trailing lens, the shiftable lens combination, and the lens body comprises an annular peripheral boundary surface upon which the optical decoupling structure is mounted.

4. The wide-angle optical unit according to claim 3, wherein the decoupling structure adjoins, in a form-fitting manner, all or part of the peripheral boundary surface.

5. The wide-angle optical unit according to claim 3, wherein the decoupling structure adjoins all or part of the peripheral boundary surface in at least one of a contactless manner and a relatively movable manner.

6. The wide-angle optical unit according to claim 1, wherein the decoupling structure does not have a constant structure cross section in the peripheral direction.

7. The wide-angle optical unit according to any of claim 1, wherein the decoupling structure consists of annular segments which together cover all or part of the peripheral boundary surface.

8. The wide-angle optical unit according to claim 1, characterised in that the decoupling structure is formed at least one of by at least one annular prism and by annular prism segments.

9. The wide-angle optical unit according to claim 1, wherein the trailing lens and the decoupling structure have different refractive indices.

10. The wide-angle optical unit according to claim 1, wherein the optical decoupling structure is configured to divide an image range that can be detected by the eye into a central region and a peripheral region.

11. The wide-angle optical unit according to claim 1, wherein the optical decoupling structure is configured to divide an image range that can be detected by the eye into a central foveal range of view and a peripheral range of view arranged around the central foveal range of view.

12. The wide-angle optical unit according to claim 1, wherein the trailing lens comprises an annular peripheral boundary surface;

and

wherein the optical decoupling structure is a closed annular structure that adjoins, in a form-fitting manner, the annular peripheral boundary surface.