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

Patent metadata

Field	Value
Publication number	US-11614625-B2
Application number	US-202117225787-A
Country	US
Kind code	B2
Filing date	Apr 8, 2021
Priority date	Sep 4, 2015
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

Systems, articles, and methods integrate photopolymer film with eyeglass lenses. 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 photo polymer 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.

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;
recording a hologram into the photopolymer film;
applying a curvature to the photopolymer film;
molding a lens-forming material to produce a first portion of the lens having the photopolymer film embedded therein;
providing a second portion of the lens;
adhering a surface of the second portion of the lens and a first surface of the first portion of the lens together by a first portion of optical adhesive; and
applying an eyeglass prescription curvature to the lens,
wherein the hologram is configured to compensate for at least one of an optical effect of the eyeglass prescription curvature or an optical effect of the curvature applied to the photopolymer film.

2. The method of claim 1 , where recording the hologram comprises:
recording the hologram while the photopolymer film is planar.

3. The method of claim 1 , wherein the first portion of the lens comprises a front half portion of the lens and the first surface of the first portion of the lens is a concave surface, and wherein adhering the surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive includes adhering the concave surface of the first portion of the lens and the surface of the second portion of the lens together by the first portion of optical adhesive.

4. The method of claim 3 , 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 the first surface of the first portion of the lens together by the first portion of optical adhesive includes adhering the convex surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive.

5. The method of claim 1 , wherein the first portion of the lens comprises a front half portion of the lens and the first surface of the first portion of the lens is a convex surface, and wherein adhering the surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive includes adhering the convex surface of the first portion of the lens and the surface of the second portion of the lens together by the first portion of optical adhesive.

6. The method of claim 5 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 first surface of the first portion of the lens together by the first portion of optical adhesive includes adhering the concave surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive.

7. The method of claim 1 , wherein the curvature is applied to the photopolymer film before molding the lens-forming material to produce the first portion of the lens and before adhering the surface of the second portion of the lens and the surface of the first portion of the lens together by the first portion of optical adhesive.

8. The method of claim 1 , wherein providing the photopolymer film comprises:
providing a photopolymer film comprising a carrier with the photopolymer film applied thereon, and
wherein applying a curvature to the photopolymer film includes warming the photopolymer film to a temperature below about 80 degrees Celsius; and
pressing the carrier, with the photopolymer film thereon, over a curved surface.

9. The method of claim 1 , further comprising:
applying at least one coating to at least one surface, the at least one surface comprising one or more of a surface of the first portion of the lens or a surface of the second portion of the lens.

10. The method of claim 1 , wherein adhering the surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive includes applying a first portion of optical adhesive to at least one surface, the at least one surface comprising one or more of the first surface of the first portion of the lens or the surface of the second portion of the lens.

11. The method of claim 1 , wherein adhering the surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive includes pressing the first surface of the first portion of the lens and the surface of the second portion of the lens together.

12. The method of claim 1 , wherein adhering the surface of the second portion of the lens and the first surface of the first portion of the lens together by the first portion of optical adhesive includes curing the first portion of optical adhesive.

13. The method of claim 1 , further comprising:
providing a third portion of the lens; and
adhering a surface of the third portion of the lens and a second surface of the first portion of the lens together by a first portion of optical adhesive.

14. The method of claim 1 , wherein molding a lens-forming material to produce a first portion of the lens having the photopolymer film embedded therein includes:
providing a lens mold having a cavity;
positioning the photopolymer film within the cavity of the lens mold;
casting a lens-forming material into the cavity; and
curing the lens-forming material within the cavity to form a first portion of the lens having the photopolymer film embedded therein, the first portion of the lens having dimensions and a geometry at least approximately equal to the cavity.

15. A wearable heads-up display having a lens manufactured according to the method of claim 1 .

16. A method of manufacturing a lens for use in a wearable heads-up display, the method comprising:
providing a photopolymer film;
recording a hologram into the photopolymer film, the hologram configured to compensate for at least an optical effect of an eyeglass prescription curvature subsequently applied to the lens;
molding a lens-forming material to produce a first portion of the lens having the photopolymer film embedded therein;
providing a second portion of the lens; and
adhering a surface of the second portion of the lens and a first surface of the first portion of the lens together by a first portion of optical adhesive.

Assignees

• Google Llc

Inventors

• Holland Lloyd Frederick
• Bailey Matthew

Classifications

• B29D11/00009

  Production of simple or compound lenses · CPC title

• B29D11/00317

  Production of lenses with markings or patterns · CPC title

• B29D11/0073

  Optical laminates · CPC title

• G03H1/0256

  having specific functional layer · CPC title

• B29K2995/0018

  having particular optical properties, e.g. fluorescent or phosphorescent · CPC title