Systems, articles, and methods for integrating holographic optical elements with eyeglass lenses

Patent metadata

Field	Value
Publication number	US-11675194-B2
Application number	US-202017108794-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Sep 4, 2015
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

Systems, articles, and methods that integrate photopolymer film with eyeglass lenses are described. One or more hologram(s) may be recorded into/onto the photopolymer file to enable the lens to be used as a transparent holographic combiner in a wearable heads-up display employing an image source, such as a microdisplay or a scanning laser projector. The methods of integrating photopolymer film with eyeglass lenses include: positioning photopolymer film in a lens mold and casting the lends around the photopolymer film; sandwiching photopolymer film in between two portions of a lens' applying photopolymer film to a concave surface of a lens' and/or affixing a planar carrier (with photopolymer film thereon) to two points across a length of a concave surface of a lens. Respective lenses manufactured/adapted by each of these processes are also described.

First claim

The invention claimed is:

1. A method of manufacturing a lens for use in a wearable heads-up display, the method comprising:
providing a photopolymer film;
providing a light directing element in contact with the photopolymer film while the photopolymer film is planar, the light directing element compensating for an optical effect of at least a curvature subsequently applied to the photopolymer film;
integrating the photopolymer film into the lens by at least one of:
molding the photopolymer film into the lens; or
adhering a surface of a first portion of the lens and a surface of a second portion of the lens to the photopolymer film.

2. The method of claim 1 , wherein providing the light directing element in contact with the photopolymer film comprises:
recording a hologram into the photopolymer film.

3. The method of claim 1 , wherein molding the photopolymer film into the lens comprises:
molding a lens-forming fluid to produce at least one portion of the lens having the photopolymer film embedded therein.

4. The method of claim 1 , wherein adhering the surface of the first portion of the lens and the surface of the second portion of the lens to the photopolymer film comprises:
adhering the surface of the first portion of the lens and a first surface of the photopolymer film together by a first portion of optical adhesive; and
adhering the surface of the second portion of the lens and a second surface of the photopolymer film together by a second portion of optical adhesive, the second surface of the photopolymer film opposite the first surface of the photopolymer film.

5. The method of claim 4 , wherein:
the first portion of the lens comprises a front half portion of the lens and the surface of the first portion of the lens is a concave surface; and
wherein adhering the surface of the first portion of the lens and the first surface of the photopolymer film together by a first portion of optical adhesive includes:
adhering the concave surface of the first portion of the lens and the first surface of the photopolymer film together by the first portion of optical adhesive to cause the photopolymer film to adopt a concave curvature at least approximately equal to the concave surface of the first portion of the lens.

6. The method of claim 5 , wherein the curvature is applied to the photopolymer film when the photopolymer film is adhered to the concave surface of the first portion of the lens.

7. The method of claim 4 , wherein:
the second portion of the lens comprises a rear half portion of the lens and the surface of the second portion of the lens is a convex surface; and
wherein adhering the surface of the second portion of the lens and a second surface of the photopolymer film together by the second portion of optical adhesive includes:
adhering the convex surface of the second portion of the lens and the second surface of the photopolymer film together by the second portion of optical adhesive.

8. The method of claim 4 , wherein:
the first portion of the lens comprises a front half portion of the lens and the surface of the first portion of the lens is a convex surface; and
wherein adhering the surface of the first portion of the lens and the first surface of the photopolymer film together by a first portion of optical adhesive includes:
adhering the convex surface of the first portion of the lens and the first surface of the photopolymer film together by the first portion of optical adhesive to cause the photopolymer film to adopt a convex curvature at least approximately equal to the convex surface of the first portion of the lens.

9. The method of claim 8 , wherein the light directing element further compensates for an optical effect of the convex curvature adopted by the photopolymer film when the photopolymer film is adhered to the convex surface of the first portion of the lens.

10. The method of claim 8 , wherein:
the second portion of the lens comprises a rear half portion of the lens and the surface of the second portion of the lens is a concave surface, and wherein adhering the surface of the second portion of the lens and the second surface of the photopolymer film together by a second portion of optical adhesive includes adhering the concave surface of the second portion of the lens and the second surface of the photopolymer film together by the second portion of optical adhesive.

11. The method of claim 4 , wherein:
adhering the surface of the first portion of the lens and the first surface of the photopolymer film by the first portion of optical adhesive includes pressing the surface of the first portion of the lens and the first surface of the photopolymer film together, and wherein adhering the surface of the second portion of the lens and a second surface of the photopolymer film together by the second portion of optical adhesive includes pressing the surface of the second portion of the lens and the second surface of the photopolymer film together.

12. The method of claim 4 , wherein adhering the surface of the first portion of the lens and the first surface of the photopolymer film by the first portion of optical adhesive comprises:
curing the first portion of optical adhesive, and wherein adhering the surface of the second portion of the lens and the second surface of the photopolymer film together by the second portion of optical adhesive includes curing the second portion of optical adhesive.

13. A method of manufacturing a lens for use in a wearable heads-up display, the method comprising:
providing a photopolymer film;
providing a light directing element in contact with the photopolymer film;
integrating the photopolymer film into the lens by at least one of:
molding the photopolymer film into the lens; or
adhering a surface of a first portion of the lens and a surface of a second portion of the lens to the photopolymer film; and

applying an eyeglass prescription curvature to the lens,
wherein the light directing element compensates for both an optical effect of the eyeglass prescription curvature of the lens and an optical effect of a curvature applied to the photopolymer film.

14. The method of claim 13 , wherein providing the light directing element in contact with the photopolymer film comprises:
recording a hologram into the photopolymer film.

15. The method of claim 13 , wherein molding the photopolymer film into the lens comprises:
molding a lens-forming fluid to produce at least one portion of the lens having the photopolymer film embedded therein.

16. The method of claim 13 , wherein adhering the surface of the first portion of the lens and the surface of the second portion of the lens to the photopolymer film comprises:
adhering the surface of the first portion of the lens and a first surface of the photopolymer film together by a first portion of optical adhesive; and
adhering the surface of the second portion of the lens and a second surface of the photopolymer film together by a second portion of optical adhesive, the second surface of the photopolymer film opposite the first surface of the photopolymer film.

17. A lens for use in a wearable heads-up display, the lens formed by:
providing a photopolymer film;
providing a light directing element in contact with the photopolymer film while the photopolymer film is planar, the light directing element compensating for a curvature subsequently applied to the photopolymer film;
integrating the photopolymer film into the lens by at least one of:
molding the photopolymer film into the lens; or
adhering a surface of a first portion of the

Assignees

• Google Llc

Inventors

• Holland Lloyd Frederick
• Bailey Matthew

Classifications

• G02B13/06

  Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces} · CPC title

• G02C7/086

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

• G03H1/0402

  Recording geometries or arrangements (G03H1/0443, G03H1/0476, G03H1/16 take precedence) · CPC title

• G03H1/0256

  having specific functional layer · CPC title

• B29D11/00413

  made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges (B29D11/00019 - B29D11/00355, B29D11/00423, B29D11/00432 take precedence) · CPC title