Forming Method For Polymeric Laminated Wafers Comprising Different Film Materials

Abstract

A method of making a polymeric laminated wafer comprising different film materials that are softenable and formable at different softening temperatures corresponding with the film materials.

1 . An optical film laminate wafer having a curved form and comprising at least two film layers having different softening temperatures. 
     
     
         2 . The optical film laminate wafer of  claim 1  wherein the curved form is a base curve. 
     
     
         3 . The optical film laminate wafer of  claim 1  further comprising an optically functional layer. 
     
     
         4 . The optical film laminate wafer of  claim 1  further comprising a polarizing layer. 
     
     
         5 . The optical film functional laminate wafer of  claim 1  wherein one of the at least two film layers is a protective layer. 
     
     
         6 . The optical film functional laminate wafer of  claim 1  wherein one of the at least two film layers is polycarbonate. 
     
     
         7 . The optical film functional laminate wafer of  claim 1  wherein one of the at least two film layers is a base layer. 
     
     
         8 . The optical film functional laminate wafer of  claim 1  wherein one of the at least two film layers is cellulose acetate butyrate. 
     
     
         9 . The optical film functional laminate wafer of  claim 5  further comprising a coating. 
     
     
         10 . An ophthalmic lens comprising:
 a protective film layer having a first glass transition temperature;   a base film layer having a second, different glass transition temperature;   a functional layer interposed between the protective film layer and the base film layer; and   a lens material fused to the base film layer.   
     
     
         11 . The ophthalmic lens of  claim 10  wherein the protective film layer comprises cellulose resin. 
     
     
         12 . The ophthalmic lens of  claim 10  wherein the base film layer comprises a polycarbonate. 
     
     
         13 . The ophthalmic lens of  claim 10  wherein the functional layer comprises a layer selected from a group of layer consisting of: a photochromic layer, a polarizing layer, and a combination thereof. 
     
     
         14 . The ophthalmic lens of  claim 10  further comprising a coating. 
     
     
         15 . An optical film laminate comprising:
 a first film layer having a first glass transition temperature;   a second film layer having a second, different glass transition temperature; and   a functional layer interposed between the first film layer and the second film layer.   
     
     
         16 . The optical film laminate of  claim 15  wherein the protective film layer comprises cellulose resin. 
     
     
         17 . The optical film laminate of  claim 15  wherein the base film layer comprises a polycarbonate. 
     
     
         18 . The optical film laminate of  claim 15  wherein the functional layer comprises a photochromic layer. 
     
     
         19 . The optical film laminate of  claim 15  wherein the functional layer comprises a polarizing layer. 
     
     
         20 . The optical film laminate of  claim 15  further comprising a coating.