Method for providing a head mounted optical system

Patent metadata

Field	Value
Publication number	US-10890774-B2
Application number	US-201414786257-A
Country	US
Kind code	B2
Filing date	May 2, 2014
Priority date	May 2, 2013
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

Method for providing a head mounted optical system, the method comprising: an optical system providing step (S 1 ), during which an optical system with an active function is provided and, an encapsulating step (S 8 ), during which the optical system is at least partly encapsulated in a transparent capsule by stacking in close contact the optical system with at least one substrate of the transparent capsule and made integral with an adhesive.

First claim

The invention claimed is:

1. A method for providing a head mounted optical system adapted to a wearer, the method comprising:
an optical system providing step, during which an optical system is provided, the optical system being an electro-optical system with a switchable function that enables at least part of an active function of the system to be controlled by means of an electrical stimulus;
a wearer data providing step, during which wearer data comprising at least the wearer's prescription is provided;
an encapsulating step, during which the optical system is at least partly encapsulated in a transparent capsule;
an optical system data providing step, during which optical system data representing at least a shape of faces of the optical system prior to the encapsulation step and an optical index of the optical system is provided;
a capsule data providing step, during which capsule data representing at least an optical index of the transparent capsule and a shape of at least one of a first face and a second face of the capsule is provided;
an optical function determining step, during which an optical function to be provided to the wearer is determined according to the wearer data and the system data;
a surface data determining step, during which surface data representing the surface of at least one face to be customized of the capsule is determined according to the optical function and the capsule data; and
a customizing step, during which at least one face of the transparent capsule is customized according to the surface data;
wherein the optical system is at least partly encapsulated in a transparent capsule by stacking in close contact the optical system with at least one substrate of the transparent capsule and made integral with an adhesive.

2. The method according to claim 1 , wherein the method further comprises a mounting step, during which the encapsulated optical system or the optical system is mounted in a spectacle frame.

3. The method according to claim 2 , wherein the customizing step is implemented prior to the mounting step.

4. The method according to claim 1 , wherein the customizing step is implemented after the mounting step.

5. The method according to claim 1 , wherein the customizing step is implemented prior to the encapsulating step.

6. The method according to claim 1 , wherein the customizing step is implemented after the encapsulating step.

7. The method according to claim 1 , wherein the method further comprises:
an index map determining step which an index map representing the index variation of at least one face to be customized of the capsule is determined according to the optical function and the capsule data.

8. The method according to claim 1 , wherein the method further comprises:
a diffractive network map determining step which a diffractive network map representing the diffractive variation of at least one face to be customized of the capsule is determined according to the optical function and the capsule data.

9. The method according to claim 1 , wherein during the optical function determining step, the optical function to be provided to the wearer is determined according to the wearer's data, the optical system's data and the capsule's data.

10. The method according to claim 1 , wherein during the customizing step the face to be customized of the capsule is machined according to the surface data.

11. The method according to claim 1 , wherein during the customizing step an optical patch is added to the face to be customized of the capsule or of the optical system.

12. The method according to claim 1 , wherein during the customizing step a discrete optical function is added to the face to be customized of the capsule or of the optical system.

13. The method according to claim 1 , wherein the head mounted optical system is a head mounted see-through display system.

14. The method according to claim 13 , wherein the method further comprises a display mounting step during which a display is coupled to an optical insert, wherein the display mounting step is implemented prior to the encapsulating step.

15. The method according to claim 1 , wherein during the encapsulating step an optical insert is placed in a slot of the capsule by being inserted laterally in the slot.

16. The method according to claim 1 , wherein the optical system has at least one active function which includes one or more active functions selected from the group consisting of:
an electrochromic function;
an photochromic function:
a polarizing function;
an anti-fog function;
a tinted function; and
a display function.

17. The method according to claim 1 further comprising:
a functional layer providing step during which at least a functional layer is fixed to a face of the optical system and/or the transparent capsule, the functional layer being selected from the group consisting of: a polarizing layer, a polarizing layer, a photochromic layer, an electrochromic layer, a hard coat layer, a top coat layer, an anti-fog layer, an anti-smudge layer, an anti-reflective layer, an interferential layer, an anti-static layer, and a tinted layer; and
a functional layer coating step during which the functional layer is coated to at least one face of the optical system and/or the transparent capsule.

18. The method according to claim 1 , wherein the encapsulating step comprises the following sub steps:
an adhesive depositing step during which at least one drop of adhesive on a face of the transparent capsule and/or or one of the face of the optical element is deposited;
a force application step during which a force is applied to the transparent capsule and/or the optical element to form a layer of adhesive between the face of the transparent capsule and the face of the optical element facing; and
a bonding step during which the optical element and the transparent capsule are made integral with the adhesive.

19. The method according to claim 18 , wherein the force applied is defined by the application of the weight force of the transparent capsule or the optical element respectively on the optical element or the transparent capsule.

20. The method according to claim 18 , wherein the force applied is defined by the application of a pressure on the optical element and/or the transparent capsule.

21. The method according to claim 20 , wherein the pressure is applied using:
at least a movable deformable pad, or
at least a deformable membrane with fluid or solid or vacuum pressure.

22. The method according to claim 1 , wherein the encapsulating step comprises the following sub steps:
an adhesive depositing step during which at least a film of adhesive on a face of the transparent capsule and/or or one of the face of the optical element is deposited;
a force application step during which a force is applied to the transparent capsule and/or the optical element to form a layer of adhesive between the face of the transparent capsule and the face of the optical element facing; and
a bonding step during which the optical element and the transparent capsule are made integral with the adhesive.

23. The method according to claim 1 , wherein the encapsulating step comprises the following sub steps:
an adhesive depositing step during which at least at least one drop of adhesive on a face of the transparent capsule and/or or one of the face of the optical element is deposited with a spin coating method;
a force application step during which a forc

Assignees

• Essilor Int

Inventors

• Callier Benoit
• Quere Loïc
• Reignault Marc
• Nogues Sira Uhalte
• Meynen Mathieu
• Tannoudji Denis Cohen

Classifications

• G02C13/00

  Assembling (producing spectacle frames from plastics or from substances in a plastic state B29D12/02); Repairing; Cleaning (disinfection or sterilisation of contact lenses A61L12/00) · CPC title

• G02C11/00

  Non-optical adjuncts; Attachment thereof (G02C7/16 takes precedence) · CPC title

• G02C9/00

  Attaching auxiliary optical parts (auxiliary optical parts per se G02C7/08 - G02C7/16) · CPC title

• G02C7/027

  considering wearer's parameters · CPC title

• G02C7/00

  Optical parts (characterised by the material G02B1/00) · CPC title