Optical colored glasses
AssigneeSchott Glas
InventorsUwe Kolberg, Ruediger Hentschel, Simone Ritter
Life of this patent
Estimating the term…
Abstract
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; In2O30-2; Ga2O3 0-2; SO30-1; SeO20-1; C 0-1; MIMIIIY2II 0.1-3, whereby MI=Cu+ and/or Ag+ and/or MIII=In3+ and/or Ga3+ and/or Al3+ and/or YII═S2− and/or Se2− and at least 0.1% in weight of the oxide (M2O3) of the MIII, which is/are present in MIMIIIYII2, and with at least 0.2% in weight of the oxide, of the YII, which is/are present in MIMIIIYII2.
Claims20
Optical colored glass characterized by a composition (in % in weight) of
- 3 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 MIMIIIYII2 0.1-3
- whereby
- MI=Cu+ and/or Ag+
- MIII=In3+ and/or Ga3+ and/or
- Al3+, YII═S2− and/or Se2−
- with at least 0.1% in weight of the oxide (M2O3) of the MIII which is/are present in MIMIIIYII2, and with at least 0.2% in weight of the oxide, of YII, which is/are present in MIMIIIYII2,
- as well as usual refining media if necessary in usual quantities:
Optical colored glass, thus characterized that it additionally contains (in % in weight on oxide basis)
- 5 MgO 0-4 CaO 0-10 BaO 0-10 SrO 0-10 P2O5 0-10
- as well as usual refining media if necessary in usual quantities
Procedure for the production of optical colored glasses of the composition range
- 6 SiO2 50-62 K2O 10-25 Na2O 0-14 MgO 0-4 CaO 0-10 BaO 0-10 SrO 0-10 P2O5 0-10 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
- MIMIIIYII2 0.1-1
- whereby MI=Cu+, Ag+
- MIII=In3+, Ga3+, Al3+
- YIIS2−, Se2−
- with at least 0.1% in weight of the oxide (M2O3) of the MIII which is/are present in MIMIIIYII2, and with at least 0.2% in weight of the oxide, of YII, which is/are present in MIMIIIYII2,
- as well as usual refining media if necessary in usual quantities.
- with the process steps glass batch preparation, melting of the glass, cooling, warming up,
- whereby 0.1-4% in weight ZnS and/or ZnSe are added to the glass batch.
Dependencies are inferred from the claim text.