| 摘要 |
The present invention provides a green colored glass using a standard soda-lime-silica glass base composition and additionally iron, cerium, chromium and optionally titanium as infrared and ultraviolet radiation absorbing materials and colorants. In particular, the green colored glass includes about 0.50 to 1.0 wt. percent total iron, about 0.35 to 0.65 wt. percent Fe2subindexO3subindex, about 0.8 to 1.5 wt. percent CeO2subindex and about 20 to 150 PPM Cr2subindexO3subindex. The glass may also include 0 to about 0.7 wt. percent TiO2subindex. The redox ratio for the glass of the present invention is maintained between about 0.20 to 0.40 and the compositions have a luminous transmittance (LTA) of at least about 65 percent, preferably at least 70 percent, and a total solar ultraviolet transmittance (TSUV) of no greater than about 38 percent, preferably no greater than about 35 percent, a total solar infrared transmittance (TSIR) of no greater than about 35 percent, preferably no greater than about 30 percent, and a total solar energy transmittance (TSET) of no greater than about 50 percent, preferably, no greater than about 48 percent. In addition, it is preferred that the glass have a ultraviolet transmittance (ISO UV) of no greater than about 15 percent, preferably no greater than 10. The glass of the present invention has a green color characterized by a dominant wavelength in the range of 500 to 550 manometers, with an excitation purity of no higher than 5 percent.
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