High index fluorine-free phosphate glasses

Details High index fluorine-free phosphate glasses High index fluorine-free phosphate glasses

C - Chemistry, Metallurgy

03

C

C03C 3/16 (2006.01) C03C 3/17 (2006.01) C03C 3/19 (2006.01) G02B 3/00 (2006.01)

Patent

CA 2062883

Abstract of the Disclosure This invention is drawn to fluorine-free glasses having refractive indices of at least 1.65 which generally consist, in mole percent, of: P2O5 24-36 SrO 0-20 ZnO 0-45 BaO 0-20 Li2O 0-15 CaO+SrO+BaO 0-25 Na2O 0-20 Sb2O3 0-61 K2O 0-10 Bi2O3 0-10 Ag2O 0-25 Sb2O3+Bi2O3 0-61 Tl2O 0-25 Sb2O3=Bi2O3+A82O+Tl2O 7-76 Li2O+Na2O+K2O+Ag2O+Tl2O 15-30 SnO 0-5 PbO 0-20 Al2O3 0-5 CaO 0-20 B2O3 0-10 CuO 0-5 Al2O3+B2+3 0-10 CeO2 0-2

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