Japan Intellectual Property Rights: GLASS MOLDING DIE FOR OPTICAL ELEMENT MOLDING, AND METHOD FOR PRODUCING OPTICAL ELEMENT

Japan, Sept. 18 -- HOYA CORP has got intellectual property rights for 'GLASS MOLDING DIE FOR OPTICAL ELEMENT MOLDING, AND METHOD FOR PRODUCING OPTICAL ELEMENT.' Other related details are as follows:

Application Number: JP,2022-001429

Category (FI): C03C3/085,C03C3/087,C03B11/00@M,C03C3/095,G02B1/00

Stage: PROBLEM TO BE SOLVED: To provide a glass molding die having elasticity with low temperature dependency.SOLUTION: The present invention pertains to a glass molding die for optical element molding. The glass is aluminosilicate glass. In the glass composition of the glass expressed by mol%, the total content of SiO2 and Al2O3 is 60% or more, and the molar ratio of the total content of Li2O, Na2O and K2O to the MgO content (Li2O+Na2O+K2O)/M...