Patent ID: 8066371

Claim:
A method of manufacturing a polarizing lens, comprising the steps of: forming a polarizing film by drawing a hydroxyl resin and impregnating it with a polarizer; laminating directly onto a front side of the polarizing film a first protective film of a drawn polycarbonate-based copolymer, and laminating directly onto a rear side of the polarizing film a second protective film of a drawn polycarbonate-based copolymer; bending, at a predetermined curvature, the polarizing laminate; fitting the bending-processed polarizing laminate in a mold recessed with a cavity contoured to correspond to the polarizing laminate, so that the polarizing-laminate front side runs along the cavity; filling an injection-molding thermoplastic polyurethane into the mold in which the polarizing laminate has been fit, to form a lens base material layer on the polarizing laminate rear side; and fusion-bonding the polarizing laminate and the lens base material layer at their boundary surfaces to unitize them.