DIE FOR FORMING GLASS AND METHOD FOR MANUFACTURING PRODUCT OF FORMED GLASS

摘要

PROBLEM TO BE SOLVED: To provide a glass forming die for producing by press forming an optical element with high forming precision or a glass substrate formed on its surface with fine pattern of embossment, or the like. SOLUTION: The forming die of this invention is constituted with vitrified carbon. Grinding and polishing the die surface can be performed with high forming precision by constituting the forming die with the vitrified carbon. The fine pattern can be also formed on the die surface with high precision by using the photolithography method. So the forming die for glass can be used as a forming die at the time of producing the glass substrate formed with the pattern of the fine embossment on the surface, the width of which is about from submicrons to several μm.