Abstract: A sealing glass is provided that includes SiO2, Al2O3 having a content of less than 2% by weight, is free of PbO except for unavoidable impurities, a coefficient of linear thermal expansion (?20-300) of more than 10*10?6/K, a dielectric constant (?r) in the range from at least 7.10 to not more than 7.80 at a measurement frequency of 1 MHz and a temperature of 25° C., and a glass transition temperature (Tg) in a range from 400 to 550° C.

Abstract: A glass includes the following components in % by weight: 2-10 wt-% SiO2, 2-10 wt-% B2O3, 40-55 wt-% La2O3, 4-11 wt-% Gd2O3, 6-14 wt-% Nb2O5, 8-18.5 wt-% TiO2, and 5-11 wt-% ZrO2. The glass has a refractive index nd of at least 2.02, a sum of the portions of La2O3, Nb2O5, TiO2 and ZrO2 is at least 76.5% by weight, and a weight ratio of a sum of the portions of La2O3, Nb2O5 and ZrO2 to the portion of TiO2 is at least 3.85:1.

Abstract: A glass having a refractive index at a wavelength of about 587.6 nm of 1.95 to 2.05 and a dispersion of 22 to less than 35 includes the following components in % by weight: 4-12 SiO2; 4-11 B2O3; <10 BaO; 30-<52 La2O3; <14 Gd2O3; <5.5 ZrO2; 10-25 TiO2; 3-16 Nb2O5; and ?2.0 ZnO. A sum total of the proportions by weight of SiO2 and B2O3 is at least 10% by weight.

Abstract: A filter glass contains >1.1 to 6.0 wt % Li2O and at least one further component selected from Na2O and K2O, and includes the following composition (in wt % based on oxide): 55.0-75.0 P2O5, 4.1-8.0 Al2O3, 8.0-18.0 CuO, 0-<0.8 V2O5, ?2.0 SiO2, ?2.0 F, 0-11.0 Total R?O (R?=Mg, Ca, Sr, Ba, Zn), and 3.0-17.0 Total R2O (R=Li, Na, K).

Abstract: A glass includes: a plurality of components (in wt.-%) as follows: Component Proportion (% by weight) SiO2 50-80? Al2O3 0-10 B2O3 0-15 Li2O 0-20 Na2O 0-20 K2O 0-25 BaO 0-10 CaO 0-10 MgO 0-10 ZnO 0-10 La2O3 0-20 TiO2 0-5? Cl 0-3? MnO2 0.2-5.0? Cr2O3 0.05-3.0,? a sum of a plurality of proportions of Li2O, Na2O and K2O being in a range of from 5.0 to 30.0 wt.-%, a sum of a plurality of amounts of MnO2 and Cr2O3 being at least 0.3 wt.-%, and a ratio of a plurality of proportions of MnO2 (in wt.-%) and Cr2O3 (in wt.-%) being in a range of from 1.5:1 to 12.5:1.

Abstract: A pore-free ceramic is provided that has a high modulus of elasticity and a low coefficient of thermal expansion. A process for producing a corresponding ceramic is also provided. The pore free ceramic is a dimensionally stable substrate material in applications subjected to temperature gradients including semiconductor manufacture.

Abstract: A glass includes the following components in % by weight: 2-10 wt-% SiO2, 2-10 wt-% B2O3, 40-55 wt-% La2O3, 4-11 wt-% Gd2O3, 6-14 wt-% Nb2O5, 8-18.5 wt-% TiO2, and 5-11 wt-% ZrO2. The glass has a refractive index nd of at least 2.02, a sum of the portions of La2O3, Nb2O5, TiO2 and ZrO2 is at least 76.5% by weight, and a weight ratio of a sum of the portions of La2O3, Nb2O5 and ZrO2 to the portion of TiO2 is at least 3.85:1.

Abstract: A glass has a low ratio of density ? and refractive index nd. The glass has a refractive index nd in a range of 1.80 to 2.00, an internal transmission of at least 80% (450 nm, 10 mm), a dispersion vd of 19.0 to 27.0, and a ratio ?/nd of <1.97.

Abstract: A sealing glass is provided that includes SiO2, Al2O3 having a content of less than 2% by weight, is free of PbO except for unavoidable impurities, a coefficient of linear thermal expansion (?20-300 of more than 10*10?6/K, a dielectric constant (?r) in the range from at least 7.10 to not more than 7.80 at a measurement frequency of 1 MHz and a temperature of 25° C., and a glass transition temperature (Tg) in a range from 400 to 550° C.

Abstract: A glass includes cations of the following components in the indicated amounts (molar proportion in cat.-%): 30-80 cat.-% silicon; 0-20 cat.-% boron; 0-2 cat.-% aluminum; 5-35 cat.-% sodium; 2-25 cat.-% potassium; 0-0.5 cat.-% nickel; 0-0.5 cat.-% chromium; and 0.03-0.5 cat.-% cobalt. A sum of the molar proportions of cations of sodium and potassium is in a range of from 15 to 50 cat.-%, a sum of the molar proportions of cations of nickel and chromium is in a range of from 0.1 to 0.5 cat.-%, and a ratio of the sum of the molar proportions of cations of sodium and potassium to the sum of the molar proportions of cations of nickel and chromium is in a range of from 70:1 to 200:1.

Abstract: The invention relates to a filter glass comprising Na2O and K2O and the following (in % by weight on an oxide basis): P2O5 58-68? Al2O3 5-10 CuO 8-15 V2O5 0.05-1??? SiO2 <2 F <1 Total R?O (R? = Mg, Ca, Sr, Ba) 0-11 Total R2O (R = Li, Na, K) ?3-17.

Abstract: Glass sheets with high refractive indexes (nd), layer composite assemblies including the glass sheets, methods for manufacturing the glass sheets, and methods of using the glass sheets are all provided. The glass sheets can be processed in a glass sheet manufacturing process and nevertheless have the optical properties of a classical optical glass. The glass sheets of the are highly transparent, resistant to crystallization, chemically resistant and highly refractive. The glass sheets have a viscosity-temperature behavior that is adapted to the manufacturing procedure with glass sheet manufacturing processes.

Abstract: Glass sheets with high refractive indexes (nd), layer composite assemblies including the glass sheets, methods for manufacturing the glass sheets, and methods of using the glass sheets are all provided. The glass sheets can be processed in a glass sheet manufacturing process and nevertheless have the optical properties of a classical optical glass. The glass sheets of the are highly transparent, resistant to crystallization, chemically resistant and highly refractive. The glass sheets have a viscosity-temperature behavior that is adapted to the manufacturing procedure with glass sheet manufacturing processes.

Abstract: The invention relates to a filter glass comprising Na2O and K2O and the following (in % by weight on an oxide basis): P2O5 58-68? Al2O3 5-10 CuO 8-15 V2O5 0.

Abstract: The present invention relates to optical glasses, in particular special short flint glasses (KZFS) and optical elements and components, which comprise these glasses, and use thereof and a method for producing such optical glasses. The optical glasses of the present invention are characterized by a pronounced short flint character and additionally by an excellent transmission and chemical resistance and workability. At that, the glasses of the invention can stand out due to lower costs of production caused by lower costs of raw materials and lower processing costs, due to their crystallization properties that can be handled also in smaller melting aggregates, and due to good environmental compatibility.

Abstract: Thin glasses having high refractive index (nd), a layer composite assembly made from these thin glasses, a method for the production of the thin glasses, and the uses of the thin glasses are provided. The thin glasses are processed in an in line manufacturing process and have the optical properties of a classical optical glass. The thin glasses are highly transparent, crystallization-resistant, chemically resistant and highly refractive. The viscosity/temperature behavior of the thin glasses is adjusted to the manufacturing process via in line flat glass methods.

Abstract: The present invention relates to optical glasses, in particular special short flint glasses (KZFS) and optical elements and components, which comprise these glasses, and use thereof and a method for producing such optical glasses. The optical glasses of the present invention are characterized by a pronounced short flint character and additionally by an excellent transmission and chemical resistance and workability. At that, the glasses of the invention can stand out due to lower costs of production caused by lower costs of raw materials and lower processing costs, due to their crystallization properties that can be handled also in smaller melting aggregates, and due to good environmental compatibility.

Abstract: Coloured glasses are provided that include a following composition in percent by weight, based on oxide of: P2O5 25-75? Al2O3 0.5-15?? MgO 0-10 CaO 0-10 BaO 0-35 SrO 0-16 Li2O 0-12 Na2O 0-12 K2O 0-12 CuO 1-20 F/F2 0-20 Sum RO (R = Mg, Ca, Sr, Ba) 0-40 Sum R2O (R = Li, Na, K) 0.5-20.

Abstract: A pore-free ceramic is provided that has a high modulus of elasticity and a low coefficient of thermal expansion. A process for producing a corresponding ceramic is also provided. The pore free ceramic is a dimensionally stable substrate material in applications subjected to temperature gradients including semiconductor manufacture.

Abstract: 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.