Optical glass element and manufacturing method thereof

摘要

The present invention relates to a manufacturing method for an optical glass element, in which molten glass 9 is pressed between a lower mold 1 and an upper mold 8 , and the pressing process is carried out while maintaining a space 10 between a border area ( 5, 6 ) of a molding face 2 belonging to the lower mold 1 and a circumferential face 3 located on the periphery thereof and glass 9 , and an optical glass element manufactured by such a method.