GLASS MOLD FOR EYEGLASS LENS, ITS MANUFACTURING PROCESS, AND MANUFACTURING PROCESS OF EYEGLASS LENS

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing process of molds for casting back-surface aspheric or bi-aspheric eyeglass lenses with a high precision in a manner suitable for mass production. SOLUTION: Glass mold 16 is obtained by placing glass curved plate 13 on convex surface 11 of transfer mold 12 having an aspheric convex surface 11 with convex surface 14 of curved plate 13 facing upward, softening curved plate 13 by heating to transfer the aspheric shape of convex surface 11 of transfer mold 12 onto curved plate 13 so that convex surface 14 of curved plate 13 is made aspheric. COPYRIGHT: (C)2008,JPO&INPIT