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)/MgO is 0.000-0.400.SELECTED DRAWING: None (Grant)

Filing Date: Jan. 7, 2022

Publication Date: July 21, 2022

The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100

Disclaimer: Curated by HT Syndication.