METHOD FOR MANUFACTURING LENS, RESIN STARTING MATERIAL USED THEREIN, AND LENS OBTAINED BY SAID MANUFACTURING METHOD

摘要

This method for manufacturing a lens comprises (i) a step for injection molding using a thermoplastic resin starting material and obtaining a lens precursor in an injection mold, and (ii) a step for arranging the lens precursor in a compression mold and compression-molding the lens precursor. When the lens precursor is moved from the injection molding of step (i) to the compression molding of step (ii), the lens precursor is removed from the injection mold when the center temperature of the lens precursor is equal to or greater than the intermediate-point glass transition temperature of the thermoplastic resin starting material.