Systems, articles, and methods for integrating holographic optical elements with eyeglass lenses
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 film 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 lens 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.
1. A method of manufacturing a lens for use in a wearable heads-up display, the method comprising:
providing a first portion of the lens;
providing a photopolymer film;
recording a hologram into the photopolymer film while the photopolymer film is planar;
applying a curvature to the photopolymer film;
adhering a surface of the first portion of the lens and a first surface of the photopolymer film together by a first portion of optical adhesive;
providing a second portion of the lens;
adhering a 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; and
applying an eyeglass prescription curvature to the lens, wherein recording a hologram into the photopolymer film includes recording a hologram that compensates for both an optical effect of the prescription curvature of the lens and an optical effect of the curvature applied to the photopolymer film.
2. The method of claim 1 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;
adhering a surface of the first portion of the lens and a 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; and
recording a hologram that compensates for both an optical effect of the prescription curvature of the lens and an optical effect of the curvature applied to the photopolymer film includes recording a hologram that compensates for both an optical effect of the prescription curvature of the lens and an optical effect of the concave curvature adopted by the photopolymer film when the photopolymer film is adhered to the concave surface of the first portion of the lens.
3. The method of claim 2 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 a surface of the second portion of the lens and a second surface of the photopolymer film together by a 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.
4. The method of claim 1 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;
adhering a surface of the first portion of the lens and a 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; and
recording a hologram that compensates for both an optical effect of the prescription curvature of the lens and an optical effect of the curvature applied to the photopolymer film includes recording a hologram that compensates for both an optical effect of the prescription curvature of the lens and 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.
5. 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 concave surface, and wherein adhering a surface of the second portion of the lens and a 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.
6. The method of claim 1 wherein providing a photopolymer film includes 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.
7. The method of claim 1 , further comprising:
applying at least one coating to at least one surface, the at least one surface selected from a group consisting of: a surface of the first portion of the lens, and a surface of the second portion of the lens.
8. The method of claim 1 wherein adhering a surface of the first portion of the lens and a first surface of the photopolymer film by a first portion of optical adhesive includes applying a first portion of optical adhesive to at least one surface, the at least one surface selected from a group consisting of: a surface of the first portion of the lens, and a first surface of the photopolymer film.
9. The method of claim 1 wherein adhering a surface of the first portion of the lens and a first surface of the photopolymer film by a 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.
10. The method of claim 1 wherein adhering a surface of the first portion of the lens and a first surface of the photopolymer film by a first portion of optical adhesive includes curing the first portion of optical adhesive.
11. The method of claim 1 wherein adhering a surface of the second portion of the lens and a second surface of the photopolymer film together by a second portion of optical adhesive includes applying a second portion of optical adhesive to at least one surface, the at least one surface selected from a group consisting of: a surface of the second portion of the lens, and a second surface of the photopolymer film.
12. The method of claim 1 wherein adhering a surface of the second portion of the lens and a second surface of the photopolymer film together by a 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.
13. The method of claim 1 wherein adhering a surface of the second portion of the lens and a second surface of the photopolymer film together by a second portion of optical adhesive includes curing the second portion of optical adhesive.