Optical glass, optical element, and method for manufacturing optical glass

Abstract

An optical glass including B3+, La3+ and Nb5+ as cationic components constituting the glass, wherein the optical glass satisfies the following expressions represented in cation percentages: 10 cat. %≦B3+≦50 cat. %; 40 cat. %≦La3+≦65 cat. %; 0 cat. %≦Nb5+≦40 cat. %; 80 cat. %≦(total amount of B3++La3++Nb5+)≦100 cat. %; and 0 cat. %≦Si4+≦10 cat. %; 0 cat. %≦Ge4+≦5 cat. %; 0 cat. %≦Mg2+≦5 cat. %; 0 cat. %≦Ba2+≦10 cat. %; 0 cat. %≦Ca2+≦10 cat. %; 0 cat. %≦Sr2+≦10 cat. %; 0 cat. %≦Zn2+≦20 cat. %; 0 cat. %≦W6+≦5 cat. %; 0 cat. %≦Zr4+≦5 cat. %; 0 cat. %≦Ti4+≦5 cat. %; 0 cat. %≦Bi3+≦5 cat. %; 0 cat. %≦Ta5+≦10 cat. %; 0 cat. %≦(total amount of Y3++Gd3+)≦20 cat. %; and 0 cat. %≦(total amount of Yb3++Lu3+)≦10 cat. %.

Dependencies are inferred from the claim text.