Patent ID: 6326324
Filing Date: 2001-12-04
Classification: C03C

Abstract:
An ultraviolet and infrared radiation absorbing glass comprising, in % by weight:basic glass components comprising65 to 80% SiO.sub.2,0 to 5% B.sub.2 O.sub.3,0 to 5% Al.sub.2 O.sub.3,0 to 10% MgO,5 to 15% CaO,10 to 18% Na.sub.2 O, and0 to 5% K.sub.2 O,provided that the sum of MgO and CaO is 5 to 15% and the sum of Na.sub.2 O and K.sub.2 O is 10 to 20%;coloring components comprising0.20 to 0.30% total iron oxide (T-Fe.sub.2 O.sub.3) in terms of Fe.sub.2 O.sub.3,0.65 to 1.1% CeO.sub.2,0.35 to 1.1% TiO.sub.2,0.001 to 0.005% CoO, and0.0003 to 0.0015% Se; andan additional component comprising0.02 to 0.30% SO.sub.3,wherein 20.5 to 25% of said T-Fe.sub.2 O.sub.3 is FeO in terms of Fe.sub.2 O.sub.3, and said ultraviolet and infrared radiation absorbing glass has a dominant wavelength and an excitation purity, as measured with the CIE standard illuminant C, of 572 to 580 nm and 4.49%-7.10%, respectively, when the glass has a thickness of 3.25 to 6.25 mm.