METODO DI FABBRICAZIONE DI UNA LENTE POLARIZZATA PER OCCHIALI E LENTE FABBRICATA CON DETTO METODO

摘要

A method of manufacturing a polarising lens for spectacles in which the lens is obtained by injection co-moulding the material of the lens on a polarising optical filter structure is described. The optical filter structure which already has its curved shape received during the stage of filter manufacture is subjected to a thermoforming stage before being inserted into the injection mould in order that the optical filter should obtain the desired curvature for the subsequent stage of injection co-moulding the lens onto the optical filter structure.