Optical colored glasses

摘要

The invention concerns an optical colored glass of the composition (in % in weight on oxide basis) SiO2 50-62; K2O 10-25; Na2O 0-14; Al2O3 0-2; B2O3 3-5; ZnO 13.5-37; F 0-1; TiO2 0-7; In2O3 0-2; Ga2O3 0-2; SO3 0-1; SeO2 0-1; C 0-1; MMY20.1-3, whereby M=Cu+ and/or Ag+ and/or M=In<3>+ and/or Ga<3+> and/or Al<3+> and/or Y=S<2-> and/or Se<2-> and at least 0.1% in weight of the oxide (M2O3) of the M, which is/are present in MMY2, and with at least 0.2% in weight of the oxide, of the Y, which is/are present in MMY2.