ILLUMINATING GLASS Russian patent published in 2000 - IPC

FIELD: manufacture of glass intended for commercial selection of plants, covering hot houses, building industry and for fluorescent lamps. SUBSTANCE: illuminating glass comprises, wt %: SiO₂ 62-76; Al₂O₃ 0.5-5: Na₂O 7-16: K₂O 0.1-6; CaO, 1-8; MgO, 1-8; Fe₂O₃, 0.01-0.4; CeO₂ 0.01-3; B₂O₃, 1-6; ZnO, 0.8-5; BaO, 0.1-4; Sm₂O₃, 0.01- 0.6; Eu₂O₃, 0.01-0.6. EFFECT: higher light transmission coefficient in dark blue and green spectral regions and scintillation of light rays in orange-red spectral region. 3 dwg, 2 tbl