Patent ID: 8008219
Filing Date: 2011-08-30
Classification: C03C

Abstract:
1. An optical glass comprising, based on a total weight of the optical glass: not less than 35 weight percent and less than 45 weight percent of P not less than 0.5 weight percent and less than 10 weight percent of B 0 to 16 weight percent of Al 0 to 2.5 weight percent of SiO 0 to 26 weight percent of BaO; 0 to 20 weight percent of SrO; 23 to 38 weight percent of ZnO; more than 6 weight percent and not more than 20 weight percent of CaO; 0 to 16 weight percent of MgO; 0 or more weight percent and less than 1 weight percent of Li 3 to 19 weight percent of Na 0 to 20 weight percent of K wherein a total weight of BaO, SrO, ZnO, CaO, and MgO is not more than 55 weight percent based on the total weight of the optical glass, a total weight of Li a total content of P