AROMATIC POLYCARBONATE POLARISING LENS

摘要

In order to obtain a polarizing lens which exhibits excellent impact resistance, external appearance, and eye strain prevention, and exhibits little variation in transmittance and colour tone during formation, a polarising lens is formed by stretching a polyvinyl alcohol film and dyeing same with dichroic dye, bonding an aromatic polycarbonate sheet to both surfaces of the film by means of an adhesive layer, and then inserting a polarising sheet, bent to have a spherical or non-spherical surface, inside a metal mold, and injecting aromatic polycarbonate. Therein, the area into which the dichroic dye seeps from the surface of the polyvinyl alcohol film is not more than a quarter of the thickness of the polyvinyl film.