Photochromic Lens

1 . 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.

2 . A method according to claim 1 wherein providing a photochromic layer comprises preparing a photochromic laminate film.

3 . A method according to claim 2 wherein preparing a photochromic laminate film comprises laminating at least one protective layer against a cast photochromic layer.

4 . A method according to claim 1 wherein curing said resin comprises UV curing of said resin.

5 . A method according to claim 1 wherein curing said resin comprises thermal curing of said resin.

6 . A method according to claim 1 further comprising forming said photochromic layer prior to placing said photochromic layer into said cast lens mold.

7 . 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.

8 . A method according to claim 7 wherein providing a photochromic film comprises providing a thermoplastic polyurethane photochromic film.

9 . A method according to claim 8 wherein said providing a thermoplastic polyurethane photochromic film includes providing a polyurethane photochromic film having a resin layer on either side of said polyurethane photochromic film.

10 . A method according to claim 7 wherein curing said resin comprises one of UV curing and thermal curing.

11 . A method according to claim 7 wherein the providing of said photochromic film includes forming said photochromic film to substantially confirm to a base curve of said mold.

12 . A method according to claim 7 wherein the providing of said photochromic film includes preparing a cast photochromic film.