Abstract: A glass wafer is provided that is made of a copper ions containing phosphate or fluorophosphate glass. The glass wafer has a diameter greater than 15 centimeters and a thickness of less than 0.4 millimeters. The glass wafer has two plane-parallel surfaces at least one of which is polished.

Abstract: A glass wafer is provided that is made of a copper ions containing phosphate or fluorophosphate glass. The glass wafer has a diameter greater than 15 centimeters and a thickness of less than 0.4 millimeters. The glass wafer has two plane-parallel surfaces at least one of which is polished.

Abstract: The invention concerns an optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30–75; K2O 5–35; B2O3>4–17; ZnO 5–37; F 0.01–10; CdO 0.1–1, S+Se+Te 0.1–1.5 as well as the use of this glass as a long-pass cutoff filter.

Abstract: The invention concerns an optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30-75; K2O 5-35; B2O3>4-17; ZnO 5-37; F 0.01-10; CdO 0.1-1, S+Se+Te 0.1-1.5 as well as the use of this glass as a long-pass cutoff filter.

Abstract: The invention relates to a method for manufacturing optical glasses and colored glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO.sub.2 powder as well as additives for reducing the temperature of the fluid phase sintering and/or melting process encompassing the following steps: the starting materials are dissolved in any sequence in a fluid medium to produce a solution as far as is possible and a suspension to the extent that they are not dispersed in solution; a greenbody is produced from the dissolved and dispersed starting materials; the greenbody is dried the dried greenbody is fluid-phase sintered at temperatures below 1200° C., in particular in the temperature range from 600° C. to 1200° C.

Abstract: The invention relates to a method for manufacturing optical glasses and coloured glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO2 powder as well as additives for reducing the temperature of the fluid phase sintering and/or melting process encompassing the following steps: the starting materials are dissolved in any sequence in a fluid medium to produce a solution as far as is possible and a suspension to the extent that they are not dispersed in solution; a greenbody is produced from the dissolved and dispersed starting materials; the greenbody is dried the dried greenbody is fluid-phase sintered at temperatures below 1200° C., in particular in the temperature range from 600° C. to 1200° C.

Abstract: 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 MIMIIIY2II 0.1-3, whereby MI=Cu+, Ag+, MIII=In3+, Ga3+, Al3+, YII=S2−, Se2−, Te2−, as well as the use of this glass as a long-pass cutoff filter.

Abstract: 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 MI MIII Y2II 0.1-3, whereby MI=Cu+, Ag+, MIII=In3+, Ga3+, Al3+, YII=S2−, S2−, Te2−, as well as the use of this glass as a long-pass cutoff filter.

Abstract: The invention concerns an optical colored glass with a composition (in percent by weight based on oxide) of

Abstract: The invention relates to a method for manufacturing optical glasses and coloured glasses with the aid of a fluid phase sintering process from a basic material encompassing at least SiO2 powder as well as additives for reducing the temperature of the fluid phase sintering and/or melting process encompassing the following steps: