Optical glass

• Main Author: TAJIMA; HIDEMI
• Format: Patent
• Language: English
• Published: 06.11.1984
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

An optical glass comprising, in % by weight 21.0 to 35.0% SiO2; 0 to 10.0% B2O3; 0 to 4.0% Al2O3; 0.5 to 4.0% Li2O; 33.0 to 55.0% BaO+SrO+CaO+MgO+ZnO, with the proviso of 19.0 to 45.0% BaO, 0 to 15.0% SrO, 0 to 20.0% CaO, 0 to 5.0% MgO, and 1.5 to 20.0% ZnO; 8.0 to 23.0% La2O3; 2.0 to 8.0% ZrO2; 0 t...