Abstract: A backlight system for background illumination of displays or screens includes at least one light source with a glass envelope, whereby the glass composition of the glass envelope is doped with one or more doping oxides which absorb the IR-radiation, and/or whereby the glass envelope has an outside and/or inside coating which absorbs the IR-radiation, and/or whereby the backlight system has a coating on components other than the glass envelope, absorbing the IR-radiation.

Abstract: A cold cathode fluorescent lamp (1) has feedthrough pins (5) made from molybdenum or a molybdenum alloy that form a glass-metal seal (6) with a glass composed of 55-75 wt. % SiO2, 13-25 wt. % B2O3, 0-10 wt. % Al2O3, 5-12 wt. % alkali oxides, 0-3 wt. % alkali earth oxides, 0-5 wt. % ZrO2, 0-10 wt. % TiO2 und 0-5 wt. % remaining oxides. The lamp has hollow cathodes (4) made from a material of the group molybdenum, molybdenum alloys, niobium, niobium alloys, and the lamp is manufactured in a compact form using conventional manufacturing parameters, and the resulting lamp has crack free, long-term vacuum-tight glass-metal seals.

Abstract: The invention relates to novel uses of glass ceramics, wherein glass ceramics, in particular, in the form of a glass ceramic tube, are used. Said glass ceramics contain 0—less than 4 wt % P205 and 0 less than 8 wt-% CaO. The tubes can be used in multiple areas of application and/or in multiple types of lamps, for example in general lighting or car lights and in heat radiators, such as halogen lamps or incandescent lamps, and/or in high pressure discharge lamps or low pressure discharge lamps. The glass ceramics, can also, in particular, be minimised in order to form known backlighting in conjunction with background lighting of flat screens. Said type of glass ceramics have excellent spectral transmission in the visible wave length rang and are solarisation stable and absorb strong UV light.

Abstract: The method of protecting a polymeric plastic from attack by bacteria and fungi includes providing bioactive glass particles having a mean particles size preferably less than 2 ?m as an additive incorporated into the polymeric plastic. The bioactive glass particles contain 40 to 60% by weight of SiO2, 10 to 30% by weight of CaO, 10 to 35% by weight of Na2O, 2 to 8 % by weight of P2O5, 0 to 25% by weight of CaF2, 0 to 10% by weight of B2O3, 0 to 8% by weight of K2O and/or 0 to 5% by weight of MgO. The additive is included in amounts of up to 25% by weight in the polymeric plastic.

Abstract: The invention relates to an antimicrobial silicate glass with the following weight composition in wt. % based on oxides: SiO2 20 to 70, Na2O 5 to 30, K2O 0 to 5, P2O5 1 to 15, B2O3 0 to 10, CaO 4 to 30, AgO 0 to 2, ZnO 0 to 8, CuO 0 to 5, MgO 0 to 8, Al2O3 0 to 7, CeO2 0 to 5, Fe2O3 0 to 2 whereby the sum of the components AgO, CuO, CeO2 is >10 ppm, preferably ?100 ppm and <8 wt. %.

Abstract: The invention relates to a glass ceramic, wherein the initial glass comprises 30–65 percent (by weight) SiO2; 5–30 percent (by weight) Na2O; 5–30 percent (by weight) CaO, and 0-15 percent (by weight) P2O5, and wherein the main crystalline phases comprise alkali—alkaline earth—silicate and/or alkali silicate and/or alkaline earth silicate. The invention is characterized in that either a glass ceramic with a single crystalline phase 1 Na2O—2CaO—3 SiO2 is excluded, or the crystalline size of the glass ceramic is <10 ?m, or the weight fraction of SiO2 is <47%.