ULTRAVIOLET-ABSORBING GLASS HAVING REDUCED VISIBLE LIGHT ABSORPTION, AND METHODS FOR MANUFACTURING AND USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing ultraviolet-absorbing glass in which only light absorption in a visible light region is reduced.;SOLUTION: A melt has following composition comprising, by weight, 55-79% SiO_2, 3-25% B₂O₃, 0-10% Al₂O₃, 0-10% Li₂O, 0-10% Na₂O, 0-10% K₂O, 0-2% MgO, 0-3% CaO, 0-3 SrO, 0-3% BaO, 0-3% ZnO, 0-3% ZrO₂, 0-1% CeO₂, 0-1% Fe₂O₃, 0-3% WO₃, 0-3% Bi₂O₃, and 0-3% MoO₃, with a proviso that the total amount of Li₂O, Na₂O, and K₂O is 0.5-16%, and the total amount of MgO, CaO, SrO, BaO and ZnO is 0-10%, and the melt composition is characterized by additionally including 0.1-10% TiO₂ and 0.01-10% As₂O₃.;COPYRIGHT: (C)2005,JPO&NCIPI