| 摘要 |
The present invention provides a dark tinted, green-gray colored glass having a limunous transmittance of about 5 to 50 percent. The glass uses a standard soda-lime-silica glass base composition and additionally iron, cobalt, selenium, and chromium, and optionally titanium, as infrared and ultraviolet radiation absorbing materials and colorants. The glasses of the present invention have a color characterized by a dominant wavelength in the range of about 485 to 465 nanometers, preferably about 495 to560 nanometers, with an excitation purity of no higher than about 15 percent, preferably no higher than about 10 percent, and more preferably no higher than about 7 percent. The glass compositions may be provided with different levels of spectral performance depending on the particular application and desired luminous transmittance.9704856
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