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US 2020/0276778 A1Published application
Photochromic Lens
AssigneeVision Ease, LP
InventorsXuzhi Qin, Hideyo Sugimura, Michael S. Boulineau, Thomas J. Moravec, Derek Harris
Life of this patent
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Abstract
A cast photochromic lens including a photochromic film and a cast resin, curable by heat or radiation.
Claims13
A method of making a photochromic lens comprising:
- providing a photochromic layer having a front side and a rear side;
- providing a cast lens mold;
- placing said photochromic layer into said cast lens mold;
- injecting a resin into said cast lens mold against said front side of said photochromic layer;
- injecting a resin into said cast lens mold against said rear side of said photochromic layer;
- and,
- curing said resin.
4 more elements
A method of making a cast photochromic lens comprising:
- providing a lens mold;
- providing a photochromic film;
- inserting said photochromic film into said mold such that a space is present at least between a front surface of said mold and said photochromic film;
- introducing a curable resin into said mold and thereby filling said space with said curable resin;
- and,
- curing said resin.
3 more elements
A cast lens comprising:
- a photochromic film;
- cast resin encapsulating said photochromic film;
- said resin having been cured by heat or radiation
Dependencies are inferred from the claim text.