Schott Ag

Schott Glas

Ruediger Hentschel

Uwe Kolberg

Simone Monika Ritter

Rolf Clasen

Monika Gierke

Jochen Freund

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&#xb0; C., in particular in the temperature range from 600&#xb0; C. to 1200&#xb0; C.

Method for manufacturing optical glasses and colored glasses at low temperatures

The invention concerns an optical colored glass of the composition (in % in weight on oxide basis) SiO50-62; KO 10-25; NaO 0-14; AlO0-2; BO3-5; ZnO 13.5-37; F 0-1; TiO0-7; InO0-2; GaO0-2; SO0-1; SeO0-1; C 0-1; MMY0.1-3, whereby M=Cu+ and/or Ag+ and/or M=In+ and/or Gaand/or Aland/or Y=Sand/or Seand at least 0.1% in weight of the oxide (MO) of the M, which is/are present in MMY, and with at least 0.2% in weight of the oxide, of the Y, which is/are present in MMY.

Optical colored glasses

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Bodenheim, Germany

Ruediger Hentschel