Patent ID: 8431501

Claim:
A space glass with a composition, in percent by weight based on oxide content, comprising: SiO 2 12-45 B 2 O 3 0-4 Al 2 O 3 0-4 TiO 2 0-5 PbO 50-82 Na 2 O 0-4 K 2 O 0-8, and at least three doping agents selected from the group consisting of CeO 2 , MoO 3 , Bi 2 O 3 , WO 3 , Ag 2 O, SnO 2 , Sb 2 O 3 and As 2 O 3 ; wherein a total amount of said at least three doping agents in said composition is at least 0.1 percent by weight; and wherein a sum total amount of alkali metal oxides in the space glass is at least 0.5 wt. %.