Patent ID: 9233871
Filing Date: 2016-01-12
CPC Classification: C03C

Claim Text:
1. An optical glass, comprising an SiO 2 component of no less than 1.0% and no greater than 60.0% by mass percent based on total mass of the glass in terms of oxide composition, a La a ZrO a TiO an Al a MgO component content of 0 to 5.0%, a CaO component content of 0 to 7.0%, a SrO component content of 0 to 20.0%, a BaO component content of 0 to 40.0%, a ZnO component content of 0 to 20.0%, a B a GeO a WO a Bi a TeO a Sb substantially no lead compound, a total mass percentage of (Na a total mass of a La having a refractive index (n