| 摘要 |
A novel glass composition is disclosed. The glass composition includes a base glass composition made up of SiO<SUB>2 </SUB>from 65 to 75 weight percent, Na<SUB>2</SUB>O from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, Al<SUB>2</SUB>O<SUB>3 </SUB>from 0 to 5 weight percent, K<SUB>2</SUB>O from 0 to 5 weight percent, B<SUB>2</SUB>O<SUB>3 </SUB>0 to 5%, and MnO<SUB>2 </SUB>0 to 0.5%, and a colorant and property modifying material portion made up of total iron up to 0.65 weight percent, Se ranging from 2 PPM to 10 PPM, at least one UV absorber selected from CeO<SUB>2</SUB>, V<SUB>2</SUB>O<SUB>5</SUB>, TiO<SUB>2 </SUB>and MoO<SUB>3</SUB>, CoO up to 20 PPM, and Cr<SUB>2</SUB>O<SUB>3 </SUB>up to 75 PPM, wherein the glass composition has a redox ratio ranging from 0.2 to 0.6.
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