Patent ID: 7754630

Claim:
A transmissive optical component comprising an optical glass comprising (in wt.-%): SiO 2 35-75 Al 2 O 3 17-35 B 2 O 3 0-5 P 2 O 5 1-17 SnO 2 + ZrO 2 + TiO 2 0.1-8 Na 2 O + K 2 O + Cs 2 O + Li 2 O 0.1-8 CaO + MgO + SrO + BaO + ZnO 0.1-8 Refining agents: ≦1 coloring oxides and ≦1; other impurities: said optically transmissive component having a coefficient of thermal expansion in the range between 0° C. and 50° C. being 4.1·10 −6 /K at the most.