Patent ID: 7906445
Filing Date: 2011-03-15
Classification: C03C

Abstract:
1. An optical glass comprising, based on a total weight of the optical glass: 12 to 30 weight percent of P 1 to 5 weight percent of B 1 to 8 weight percent of Li 0.5 to 10 weight percent of Na 0.5 to 15 weight percent of K 1 to 5 weight percent of CaO; 0 to 20 weight percent of BaO; 0 to 5 weight percent of SrO; 1 to 10 weight percent of TiO 1 to 20 weight percent of Bi 5.0 to 32 weight percent of Nb 13 to 60 weight percent of WO 0 to 1 weight percent of Sb