Abstract: A light device, preferably a metal halide high pressure discharge lamp, which includes a first body which has a light element, a second body which encompasses the first body, whereby the second body consists essentially of an Al-silicate glass, for example a hard glass. The Al-silica glass has a Tg of >600° C., preferred >650° C., especially preferred >700° C., particularly preferred >750° C., and a thermal expansion coefficient ?20/300>0, preferably in the range of 3??20/300?6, particularly preferred 3.5??20/300?5.

Abstract: A rare earth containing glass nominally based on the ternary P2O5—WO3—Na2O-Ln2O3 compositional space, with WO3>30-65 mole %, Na2O 15-35 mole %, P2O5 5-65 mole %, Ln2O3 (Ln=one or more cations selected from lanthanum or any of the rare earth oxides) up to the limit of solubility; with optional additives, MoO3 being a preferred additive, that can be employed alone or in combination at levels up to 15 mole %.

Abstract: The invention describes a glass and a glass-ceramic which at least includes the constituents SiO2, Al2O3 and Y2O3 and is preferably doped with rare earth ions. The weight ratio between the weight of Y2O3 and the total weight of SiO2, Al2O3 and Y2O3 is at least 0.2, preferably at least 0.4 or more. The rare earth ions can preferably be incorporated in crystal phases which are precipitated out of glass with a high yttrium content. (FIG. 2).

Abstract: An optically active glass containing bismuth oxide and germanium oxide is disclosed which comprises 0.1 up to less than 5 mol-% of B2O3 and SiO2 in total. In addition the glass comprises 10 to 60 mol-% of Bi2O3 and 10 to 60 mol-% of GeO2. The glass may further comprise 0-15 wt-% of rare earths, 0-30 wt-% of M?2O, 0-20 wt-% of M?O, 0-15 wt-% of La2O3, 0-40 wt-% of Ga2O3, 0-10 wt-% of Gd2O3, 0-20 wt-% of Al2O3, 0-10 wt-% of CeO2, 0-30 wt-% of ZnO, wherein M? is at least one component selected from the group formed by Li, Na, K, Rb and Cs, and wherein M? is at least one component selected from the group formed by of Be, Mg, Ca, Sr and Ba. Also a suitable method of preparation is disclosed.

Abstract: A white cold light source uses an LED or a gas discharge lamp and a luminescent rare earth doped glass comprising multiple rare earth cations and a particularly high total rare earth content to generate white light emission. Preferably, the luminescent glass has a 2700K to 7000K black body temperature and color rendering index value exceeding 80. A first embodiment of the glass is composed primarily of P2O5, Al2O3, and alkaline earth and alkali metal oxides, and possesses other properties such as physical and thermal properties that are compatible with conventional melting, forming and other manufacturing steps. Other embodiments of the luminescent glass have a maximum water content of 0.1 wt-% and do not contain any boron. Also the luminescent glass is preferably free of water, boron oxides and nitrides. The luminescent glass can be used as a wavelength converter to produce bright white light emission when pumped by conventional commercially available blue and UV light emitting diode sources.

Abstract: To provide an improved ion exchange process for the gentle treatment of phosphate-containing glass substrates in salt melts, the invention provides a process in which the source for the ions used is a salt melt 10 which contains silver ions, wherein the salt melt 10 contains ammonium ions. Furthermore, the invention provides a glass material (100) which comprises a phosphate-containing glass (1) and at least one region (210) which contains at least a first composition of ions and at least one region (220) which contains at least a second composition of ions, producible by the process according to the invention.

Abstract: A fluorine-doped at least ternary silicate glass is disclosed which contains in particular TiO2. It can advantageously be used as a material having a low thermal expansion, wherein the slope of the coefficient of thermal expansion dCTE/T is ±2·109/K2 in the temperature range from ?50° C. to 100° C. This material is particularly suited for micro-lithography, in particular for EUV-lithography.

Abstract: The invention relates to a device for the production of high-melting glass materials or high-melting glass ceramic materials, comprising a vessel for accommodating molten glass and a container that accommodates the vessel, whereby the vessel has a tubular outlet. According to the invention, the device is characterised by the fact that the vessel and a first section of the tubular outlet if formed of iridium or a material with a high iridium content, whereby the container is designed to accommodate the vessel and the first section of the tubular outlet under a protective gas atmosphere. The invention also relates to a corresponding method. The molten glass is shaped into a formed part in a discontinuous operation. The choice of the material for the vessel used as the crucible allows the attainment of high temperatures according to the invention which enables glass materials or glass ceramic materials with a much higher spectral transmission in the visible wavelength range.

Abstract: The invention relates to an aluminoborosilicate glass devoid of alkali, which has the following composition (in wt. % relative to the oxide content): SiO2>58-70; B2O3 0.5-<9; Al2O3 10-25; MgO>8-15; CaO 0-<10; SrO-<3; BaO 0-<2; with MgO+CaO+SrO+BaO>8-18; ZnO 0-<2. Said glass is eminently suitable for use as substrate glass, both in display technology and in thin-film photovoltaic technology.

Abstract: Flat panel liquid-crystal displays, such as for laptop computers. The displays include twisted nematic displays, supertwisted nematic displays, active matrix liquid-crystal displays, thin film transistor displays, and plasma addressed liquid-crystal displays. The displays are furnished with glass substrates. The glass substrates exhibit high resistance to thermal shock, a high transparency over a broad spectral range in the visible and ultra violet ranges and the glass being configured to be free of bubbles, knots, inclusions, streaks, and surface undulations, which glass substrates are made from alkali-free aluminoborosilicate glasses. There are also provided analogous thin-film photovoltaics.

Abstract: The invention relates to an alkali-free aluminoborosilicate glass having a coefficient of thermal expansion ?20/300 of between 2.8 and 3.9·10?6/K, which has the following composition (in % by weight, based on oxide): SiO2>58-65, B2O3>6-11.5; Al2O3>14-20, MgO>3-6, CaO>4.5-10, SrO 0-<1.5, BaO>1.5-6, or SrO 0-<4, BaO >2.5-6, respectively, with SrO+BaO>3, ZnO 0-<2, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.

Abstract: The invention relates to a method for the production of a glass containing bismuth oxide, the use of such a method for the production of optical glasses, in particular glasses for application in optical telecommunications and a glass which may be produced by said method.

Abstract: Flat panel liquid-crystal displays, such as for laptop computers. The displays include twisted nematic displays, supertwisted nematic displays, active matrix liquid-crystal displays, thin film transistor displays, and plasma addressed liquid-crystal displays. The displays are furnished with glass substrates. The glass substrates exhibit high resistance to thermal shock, a high transparency over a broad spectral range in the visible and ultra violet ranges and the glass being configured to be free of bubbles, knots, inclusions, streaks, and surface undulations, which glass substrates are made from alkali-free aluminoborosilicate glasses. There are also provided analogous thin-film photovoltaics.

Abstract: A laser uses a rare-earth doped phosphate laser glass characterized by a particularly high rare-earth content to generate the highest possible output power/energy pulses. The laser glass is composed primarily of P2O5, Al2O3, and alkaline earth and alkali earth oxides, and possesses other properties such as physical and thermal properties that are compatible with melting and manufacturing methods. The laser glass can be used in high power and high energy laser systems where laser action is achieved in rod or slab shaped components as well as in waveguide or thin film structures prepared by structuring technologies such as sputtering, ion exchange, and/or direct writing with a femtosecond laser.

Abstract: The invention relates to bismuth oxide glass, containing germanium oxide, a method for the production thereof, the use thereof and a glass fiber consisting of said inventive glass.

Abstract: The invention relates to a glass fibre, comprising a core, the matrix glass of which contains at least one heavy metal oxide and at least one rare earth compound, whereby said core is surrounded by at least two glass layers. The invention further relates to a method for production of said glass fibre.

Abstract: The invention relates to an alkali-free aluminoborosilicate glass having a coefficient of thermal expansion &agr;20/300 of between 2.8 and 3.9·10−6/K, which has the following composition (in % by weight, based on oxide) : SiO2>58-65, B2O3>6-11.5; Al2O3>14-20, MgO>3-6, CaO>4.5-10, SrO 0-<1.5, BaO>1.5-6, or SrO 0-<4, BaO>2.5-6, respectively, with SrO+BaO>3, ZnO 0-<2, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.

Abstract: A white cold light source uses an LED or a gas discharge lamp and a luminescent rare earth doped glass comprising multiple rare earth cations and a particularly high total rare earth content to generate white light emission. Preferably, the luminescent glass has a 2700K to 7000K black body temperature and color rendering index value exceeding 80. A first embodiment of the glass is composed primarily of P2O5, Al2O3, and alkaline earth and alkali earth oxides, and possesses other properties such as physical and thermal properties that are compatible with conventional melting, forming and other manufacturing steps. Other embodiments of the luminescent glass have a maximum water content of 0.1 wt-% and do not contain any boron. Also the luminescent glass is preferably free of water, boron oxides and nitrides. The luminescent glass can be used as a wavelength converter to produce bright white light emission when pumped by conventional commercially available blue and UV light emitting diode sources.

Abstract: An alkali-free aluminoborosilicate glass having a coefficient of thermal expansion &agr;20/300 of between 2.8×10−6/K and 3.8×10−6/K, which has the following composition (in % by weight, based on oxide): silicon dioxide (SiO2)>58-65, boric oxide (B2O3)>6-11.5, magnesium oxide (MgO) 4-8, barium oxide (BaO) 0-<0.5, zinc oxide (ZnO) 0-2 and aluminum oxide (Al2O3)>14-25, calcium oxide (CaO) 0-8, strontium oxide (SrO) 2.6-<4, with barium oxide (BaO)+strontium oxide (SrO)>3, or aluminum oxide (Al2O3)>14-25, calcium oxide (CaO) 0-<2, strontium oxide (SrO)>0.5-<4, or aluminum oxide (Al2O3)>21-25, calcium oxide (CaO) 0-8, strontium oxide (SrO)>2.6-<8, with barium oxide (BaO)+strontium oxide (SrO)>3, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.

Abstract: The borosilicate glass has a hydrolytic stability class of 1, an acid resistance class of 1 and a lye resistance class of at least 2 and a composition (in % by weight, based on oxide) of SiO2 70.5-76.5; B2O36.5-<11.5; Al2O3 4-8; Li2O 0.5-2; Na2O 4.5-9; K2O 0-5; with Li2O+Na2O+K2O 5.5-10.5; MgO 0-1; CaO 0-2; and CeO2 0-1, and optionally refining agents. This borosilicate glass is preferably free of As2O3, Sb2O3 and BaO and is then especially advantageous as a pharmaceutical packaging material. It also may contain up to 3% by weight TiO2 to block UV radiation. The borosilicate glass may include up to 0.5% by weight ZrO2 to reach a lye resistance class of 1.