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...http://www.google.fr/patents/US20050247081?utm_source=gb-gplus-shareBrevet US20050247081 - Optical glass element and manufacturing method thereof
Optical glass element and manufacturing method thereof
Numéro de demande: 10/940,942 Numéro de publication: US 2005/0247081 A1 Date de dépôt: 14 sept. 2004 Brevet délivré: US7415842 ( Date de délivrance 26 août 2008)
