Optical device adapted for a wearer

Patent metadata

Field	Value
Publication number	US-10466483-B2
Application number	US-201615740866-A
Country	US
Kind code	B2
Filing date	Jun 28, 2016
Priority date	Jul 2, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An optical device adapted for a wearer includes an emitting system, a first wafer and a gap. The emitting system includes a halt conducting element configured to output a light through an exit face of the light conducting element towards an eye of the wearer. The first wafer includes an internal face facing the light conducting element. The gap is arranged between at least the exit face of the light conducting element and the wafer. The internal face of the wafer includes at least a curved surface facing the exit face and has a curvature greater than 0 D.

First claim

The invention claimed is:

1. An optical device adapted for a wearer comprising:
a emitting system comprising a light conducting element configured to output a light through an exit face of said light conducting element towards an eye of the wearer,
a first wafer comprising an internal face facing the light conducting element, and
a gap arranged between at least the exit face of the light conducting element and the first wafer,
wherein the internal face of the first wafer comprises at least a curved surface facing the exit face and having a curvature greater than 0 D, and
wherein the internal face of the first wafer comprises at least one concave area facing the exit face and having a curvature greater than 0.2 D.

2. The optical device according to claim 1 , wherein the gap is filled with a material having a refractive index lower than the refractive index of the light conducting element.

3. The optical device according to claim 1 , wherein the gap is filled with air.

4. The optical device according to claim 1 , further comprises a second wafer arranged such that the light conducting element is placed between the first and the second wafers.

5. The optical device according to claim 4 , wherein the light conducting element comprises an isolation layer arranged on a face facing the second wafer, the isolation layer being in close contact with the second wafer.

6. The optical device according to claim 4 , further comprises another gap arranged between at least a face opposed to the exit face of the light conducting element and the second wafer, and wherein the second wafer comprises an internal face facing the light conducting element, the internal face of the second wafer comprising at least a curved surface facing the face opposed to the exit face and having a curvature greater than 0 D.

7. The optical device according to claim 6 , wherein:
one of the first and second wafers, also called front wafer, is configured to form a plano lens, and
the other of the first and second wafers, also called back wafer, is configured to form a lens having a refractive power adapted to the wearer.

8. The optical device according to claim 7 , wherein the internal face of the back wafer comprises at least a convex area facing the exit face without contact with the light conducting element and configured to receive the light outputting from the exit face towards the eye of the wearer.

9. The optical device according to claim 7 , wherein the front wafer is configured to have a cylinder equal to zero.

10. The optical device according to claim 4 , wherein:
the light conducting element has a transparent substrate having two faces, one of the faces comprising the exit face, and
the first wafer, the second wafer and the transparent substrate are each edged around a contour to dimensions of a frame, each contour is comprised in a plan.

11. The optical device according to claim 10 , wherein the internal face of each of the first wafer and the second wafer comprises a peripheral area, the peripheral area being comprised in the same plan as the contour.

12. The optical device according claim 10 , wherein the optical device comprises sealing means arranged between a peripheral area of the transparent substrate and a peripheral area of the internal face of each of the first wafer and the second wafer.

13. The optical device according to claim 10 , wherein each of the first wafer and the second wafer has at least one face that is surfaced according to wearer data.

14. The optical device according to claim 1 , wherein:
the light conducting element has a transparent substrate having two faces, one of the faces comprising the exit face, and
the first wafer and the transparent substrate are each edged around a contour to dimensions of a frame, each contour is comprised in a plan.

15. The optical device according to claim 14 , wherein the internal face of the first wafer comprises a peripheral area, the peripheral area being comprised in the same plan as the contour.

16. The optical device according claim 14 , wherein the optical device comprises sealing means arranged between a peripheral area of the transparent substrate and a peripheral area of the internal face of the first wafer.

17. The optical device according to claim 14 , wherein the first wafer has at least one face that is surfaced according to wearer data.

18. The optical device according to claim 1 , wherein the first wafer comprises an optical function on an external surface, an internal surface, or within the first wafer, the optical function being selected from a group comprising a photochromic function, a polarizing function, a tinted function and any combination thereof.

19. The optical device according to claim 1 , wherein the at least one concave area has a curvature greater than 0.5 D.

20. An optical device adapted for a wearer comprising:
a emitting system comprising a light conducting element configured to output a light through an exit face of said light conducting element towards an eye of the wearer,
a first wafer comprising an internal face facing the light conducting element,
a second wafer arranged such that the light conducting element is placed between the first and the second wafers,
a gap arranged between at least the exit face of the light conducting element and the first wafer, and
another gap arranged between at least a face opposed to the exit face of the light conducting element and the second wafer,
wherein the internal face of the first wafer comprises at least a curved surface facing the exit face and having a curvature greater than 0 D,
wherein the second wafer comprises an internal face facing the light conducting element, the internal face of the second wafer comprising at least an curved surface facing the face opposed to the exit face and having a curvature greater than 0 D,
wherein one of the first and second wafers, also called front wafer, is configured to form a plano lens, and the other of the first and second wafers, also called back wafer, is configured to form a lens having a refractive power adapted to the wearer, and
wherein the front wafer is configured to have a cylinder equal to zero.

Assignees

• Essilor Int

Inventors

• Quere Loic
• Meynen Mathieu
• Gacoin Eric
• Reignault Marc
• Callier Benoit

Classifications

• G02B27/0172 Primary

  characterised by optical features · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02C7/086

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