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 photopolymer film;
recording a hologram into the photopolymer film while the photopolymer film is planar;
applying a curvature to the photopolymer film;
molding a lens-forming fluid 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 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 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.
3. 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.
4. The method of claim 1 wherein 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 includes applying a first portion of optical adhesive to at least one surface, the at least one surface selected from a group consisting of: the first surface of the first portion of the lens, and the surface of the second portion of the lens.
5. The method of claim 1 wherein 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 includes pressing the first surface of the first portion of the lens and the surface of the second portion of the lens together.
6. The method of claim 1 wherein 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 includes curing the first portion of optical adhesive.
7. 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.
8. The method of claim 1 wherein molding a lens-forming fluid 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 fluid into the cavity; and
curing the lens-forming fluid 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.