| 摘要 |
An optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30-75; K2O 5-35; TiO2 0-5; B2O3>4-17; ZnO 5-37; F 0.01-10 M<I>M<III>Y2<II >0.1-3, whereby M<I>=Cu<+>, Ag<+>, M<III>=In<3+>, Ga<3+>, Al<3+>, Y<II>=S<2->, Se<2->, Te<2->, as well as the use of this glass as a long-pass cutoff filter.
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