Abstract: The borosilicate glass of the invention is highly resistant to solarization, because it is free of CeO2. Also it contains 0.01 to 0.05 wt. % of Fe2O3 and 0.05 to 0.8 wt. % of TiO2. This borosilicate glass is especially advantageous for production of flash tubes, gas discharge lamps, and fluorescent tubes for brake lights and display backlights.

Abstract: The lead-free, arsenic-free, preferably gadolinium-free and fluorine-free, optical glass has a refractive index of 1.86?nd?1.95, an Abbe number of 19?vd?24, a transformation temperature of ?595° C., preferably ?550° C., good crystallization stability, good processing properties and production properties. The optical glass has a composition (based on oxide content in % by weight) of P2O5, 14-31; Nb2O5, 22-50; Bi2O3, 5-36; WO3, >10-25; GeO2, 0-14; Li2O, 0-6; K2O, 0-6; Cs2O, 0-7; MgO, 0-6; CaO, 0-6; SrO, 0-6; BaO, 0-6; ZnO, 0-6; TiO2, 0-4; ? alkali oxides, 2-12; ? alkaline earth oxides, 0-10; ? Nb2O5, WO3, Bi2O3?50 and fining agents, 0-2.

Abstract: A borosilicate glass, having a spectral edge wavelength in a UV range of 280 to 325 nm, which can be set in a simple and defined manner, with the composition in percent by weight on an oxide basis of 60–75% SiO2, 10–15% B2O3, 5–15% Na2O, 5–10% K2O, 0–5% Li2O, 0.1–1 CaO, 0.5–3% BaO, >0–1.7% TiO2, 0–0.5% Sb2O3, and normal refining agents.

Abstract: The present invention describes lead and arsenic free and preferably gadolinium and further preferably also fluorine free optical glasses for the application fields mapping, projection, telecommunication, optical communication engineering, mobile drive and/or laser technology with a refractive index of 1.75?nd?1.85, an Abbe number of 34?vd?44 and have a low transformation temperature, namely lower than or equal to 560° C. and preferably lower than or equal to 550° C., as well as good producability and processability and crystallisation stability. The glasses according to the present invention within the following composition range (based on oxide in % by weight) contain the following components: SiO2 0.5-8?? B2O3 10-25 ZnO 10-26 La2O3 18-34 Ta2O5 >15-25?? Nb2O5 0.

Abstract: The invention relates to a borosilicate glass consisting of 0.01 0.05 wt. % Fe2O3 and 0.05 0.8 wt. % TiO2, which is highly resistant to solarization and which is especially suitable for use as backlight bulbs.

Abstract: The present invention relates to the use of lead-free and phosphate-containing glasses, preferably coloured and filter glasses which absorb light in the infrared region (IR-region), in a precision moulding process. Preferably, the content of fluorine in the glass is low. Advantageously, so optical constituents can be produced without finishing, such as for example lenses for digital cameras. By the use according to the present invention, also other optical constituents can be produced which can be directly used for a corresponding technical purpose. For an advantageous use, the optical constituents produced by precision moulding can be used in the fields imaging, projection, telecommunications, optical communications engineering and laser technology.

Abstract: The lead-free, preferably lithium-free, optical glass is useful in imaging, projection, telecommunications, optical communication and/or laser technology, particularly for making precise-pressed optical elements. It has a refractive index nd of 1.50 to 1.57, an Abbé number ?d of 61 to 70. It also has a low transformation temperature of about or below 400° C., good production and processing properties and crystallization resistance. It has a composition, in percent by weight, based on oxide content of P2O5, 40 to 60; Al2O3, 1 to 20; B2O3, 0 to <5; Na2O, 0 to 30; K2O, 0 to 30; Li2O, 0 to <1; ?M2O, >15 to 40; BaO, 1 to 20; ZnO, 1 to 20; SrO, 0 to 5; CaO, 0 to 5; MgO, 0 to 5; and ?MO, 5 to 25. In addition, it may contain standard refining agents, although it is preferably free of arsenic and fluorine.

Abstract: A cadmium-free optical steep edge filter comprising I-III-VI compound semiconductor systems of stoichiometric or non-stoichiometric composition, where the I-III-VI compound semiconductors are systems with one or more of the following elements: for the univalent (I) elements: Cu, Ag for the tervalent (III) elements: Al, In, Ga for the hexavalent (VI) elements: S, Se, Te.

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; In2O3 0-2; Ga2O3 0-2; SO3 0-1; SeO2 0-1; 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/ar present in MIMIIIYII2, and with at least 0.2% in weight of the oxide, of YII, which/are present in MIMIIIYII2.

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; In2O3 0-2; Ga2O3 0-2; SO3 0-1; SeO2 0-1; 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.

Abstract: A borosilicate glass, having a spectral edge situation in a UV range of 280 to 325 nm, which can be set in a simple and defined manner, with the composition in percent by weight on an oxide basis of 60-75% SiO2, 10-15% B2O3, 5-15% Na2O, 5-10% K2O, 0-5% Li2O, 0.1-1 CaO, 0.5-3% BaO, >0-1.7% TiO2, 0-0.5% Sb2O3, and normal refining agents.

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: The silicate glass has a composition (in % by weight, based on oxide) of SiO2, 54-72; Al2O3, 0.5-7; ZrO2, 10-20; B2O3, 0-<5; Na2O, 3-<8; K2O, 0-5; with Na2O+K2O, 2-<8; CaO, 3-11; MgO, 0-10; SrO, 0-8; BaO, 0∝10; with CaO+MgO+SrO+BaO, >5-24; La2O3, 0-5; and TiO2, 0-4. The glass also contains at least 0.6 percent by weight of La2O3 or at least 0.1 percent by weight TiO2. The glass has a hydrolytic resistance in hydrolytic glass 1, an acid resistance in acid class 3 or better, preferably acid class 1, a caustic lye resistance in lye class 1, a glass transition temperature (Tg) of at least 650° C., a thermal expansion coefficient (&agr;20/300) of 4.1×10−6 to 7.4×10−6/K, a refractive index (nd) of 1.53 to 1.63, an Abbé number (&ngr;d) of 48 to 58 and a negative anomalous partial dispersion in a blue spectral region (&Dgr;Pg,F) of up to −0.0130.

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 relates to cadmium-free optical steep edge filters comprising I-III-VI compound semiconductor systems of stoichiometric or non-stoichiometric composition, where the I-III-IV compound semiconductors are systems with one or more of the following elements:

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.

Abstract: The invention concerns alkali-poor or alkali-free alkaline earth aluminum borosilicate glasses having the following composition (weight percent based on oxides) SiO2>55-70; B2O3 1-8; Al2O3 10-18; Na2O>1-5; K2O 0-4; with Na2O+K2O >1-5; MgO 0-5; CaO 3-<8; SrO 0.1-8; BaO 4.5-12; with MgO+CaO+SrO+BaO 10-25; SnO2 0-15; ZrO2 0-3; TiO2 0-2; ZnO 0-2. Said glasses can be used especially as substrates in thin layer photovoltaics, especially for CIS-based solar cells.

Abstract: The invention relates to a lead silicate glass, to the use thereof for the production of secondary electron multipliers, and to a process for setting a reduced surface resistance of a lead silicate glass of this type. The lead silicate glass has the following composition (in % by weight): SiO2 15-35, PbO 35-55, Bi2O3>20-29, BaO 0-10, Cs2O 0-10, BaO+Cs2O 2-13, CaO 0-10, SrO 0-10, CaO+SrO+BaO 0-10, and up to 1% by weight of conventional fining agents. The surface resistance of the lead silicate glass after reduction in a hydrogen atmosphere is from 0.1 to 60 M&OHgr;/sq.