Mold assembly for forming ophthalmic lens or lens blank and method of producing the same using the mold assembly

摘要

A mold assembly for forming an ophthalmic lens, or a lens blank from which one ophthalmic lens is produced by effecting a cutting operation on at least one of a front surface and a back surface of the lens blank, the mold assembly consisting of a first mold having a molding surface and a second mold having a molding surface, which first and second molds are assembled together so as to define therebetween a mold cavity having a profile corresponding to that of the ophthalmic lens or the lens blank, the mold cavity being filled with a polymeric material which is polymerized to form the ophthalmic lens or the lens blank, wherein at least one of the first and second molds is a layered mold which is constituted by a composite sheet comprising a metal sheet layer and at least one resin layer which are laminated on each other, the at least one resin layer of the composite sheet providing the molding surface of the layered mold which partially defines the mold cavity.