Patent ID: 6953758

Claim:
A blue colored, infrared and ultraviolet radiation absorbing glass composition having a composition comprising a base glass portion comprising: SiO 2 66 to 75 percent by weight, Na 2 O 10 to 20 percent by weight, CaO 5 to 15 percent by weight, MgO 0 to 5 percent by weight, Al 2 O 3 0 to 5 percent by weight, and K 2 O 0 to 5 percent by weight, and a primary solar radiation absorbing and colorant portion consisting essentially of: total iron 0.6 to 2 percent by weight, FeO 0.15 to 0.65 percent by weight, CoO 30 to 250 PPM, Se 1 to 15 PPM, TiO 2 0 to 0.9 percent by weight, and Nd 2 O 3 0 to 3 percent by weight, the glass having a redox in the range of 0.15 to 0.58, wherein at a redox range from 0.15 to 0.4, the range of CoO is from 60 to 250 PPM, and wherein at a redox range greater than 0.4, the CoO is in the range of 30 to 100 PPM, and wherein at a thickness of 0.160 inches, the glass has a luminous transmittance (LTA) of 35% up to 70%; a color characterized by a dominant wavelength in the range of 482 to 487 nanometers and an excitation purity ranging from 8 to 30 percent; a total solar ultraviolet transmittance (TSUV) of 40 percent or less; a total solar infrared transmittance (TSIR) of 25 percent or less; and a total solar energy (TSET) transmittance of 40 percent or less.