Schott Ag

Schott Glas

Jochen Freund

Uwe Kolberg

Rolf Clasen

Monika Gierke

Simone Monika Ritter

Ute Woelfel

Bianca Schreder

Marc Clement

Magdalena Winkler-Trudewig

Ruediger Hentschel

Steffen Reichesl

Claude Martin

Christophe Baur

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.

Infrared absorbing glass wafer and method for producing same

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

Optical colored glass, its use, and an optical long-pass cutoff filter

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

An optical colored glass with a composition (in percent by weight based on oxide) of SiO 30-75; K O 5-35; TiO 0-5; B O >4-17; ZnO 5-37; F 0.01-10 M M Y 0.1-3, whereby M &equals;Cu , Ag , M &equals;In , Ga , Al , Y &equals;S , Se , Te , as well as the use of this glass as a long-pass cutoff filter.

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Mainz, Germany

Jochen Freund