Patent ID: 8029707

Claim:
A method for producing a photochromic multifocal optical lens comprising the steps of: providing a polycarbonate lens having a photochromic coating on an SV front surface of said lens and applying a primer formulation to the photochromic coating of the lens and drying same to produce a primer coated photochromic lens; providing a mold assembly including a segment region and applying a surface casting monomer solution into the mold to form a casting layer and wetting out the segment region, wherein the monomer solution includes about 75 weight % of bisphenyl A (meth)diacrylate with the balance comprising a mixture of benzyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate and 2-phenoxyethy (meth)acrylate; and about 1 part per hundred monomer (phm) of 1-hydroxy cyclohexyl phenyl ketone; placing the primer coated photochromic lens into the mold, such that the front surface of the primer-coated lens contacts the casting layer; and curing the casting layer to produce a segmented photochromic optical lens wherein the primer provides secure adhesion of the casting layer to the photochromic coating.