The present disclosure provides a device and a method with which flat glasses with particularly uniform thickness can be obtained. The methods are drawing methods in which a glass ribbon is drawn. In the method an aperture is used which allows a defined very small slit between the glass ribbon and the aperture also in the case of a change of the position of the glass ribbon.

Provided is a glass for radiation detection having high fluorescence detection sensitivity and high weather resistance. A glass for radiation detection, comprising, in mol %, 0.1 to 30% of SiO.sub.2+B.sub.2O.sub.3, 0 to 20% of SiO.sub.2, 0 to 10% of B.sub.2O.sub.3, 40 to 70% of P.sub.2O.sub.5, 10 to 30% of Al.sub.2O.sub.3, 10 to 30% of Na.sub.2O, and 0.01 to 2% of Ag.sub.2O.

The present invention relates to a glass material for sealing a large-area dye-sensitized solar cell and, more specifically, to a glass material capable of binding to a large area uniformly and very strongly without reacting with en electrolyte. According to the present invention as described above, the glass material is expected to have effects of uniformly sealing a dye-sensitized solar cell, securing stable chemical properties against a reaction with an electrolyte, and having physical strength suitable for large-area binding, and thus can improve reliability and lifetime of solar cell products.

The near-infrared absorbing glass includes four or more kinds of the prescribed main cations, and includes P ions, Ba ions and Cu ions as essential cations, wherein, in a glass composition expressed in anion %, the content of O ions is 90.0 anion % or more, in a glass composition expressed in atomic %, the ratio of the content of O ions to the content of P ions is 3.15 or less, in a glass composition expressed in mol % based on oxides, the total content of B.sub.2O.sub.3 and SiO.sub.2 is 3.0 mol % or less, the total content of MgO and Al.sub.2O.sub.3 is 8.0 mol % or less, and the total content of Li.sub.2O, Na.sub.2O and K.sub.2O is 15 mol % or less.

The near-infrared absorbing glass includes four or more kinds of the prescribed main cations, and includes P ions, Ba ions and Cu ions as essential cations, wherein, in a glass composition expressed in anion %, the content of O ions is 90.0 anion % or more, in a glass composition expressed in atomic %, the ratio of the content of O ions to the content of P ions is 3.15 or less, in a glass composition expressed in mol % based on oxides, the total content of B.sub.2O.sub.3 and SiO.sub.2 is 3.0 mol % or less, the total content of MgO and Al.sub.2O.sub.3 is 8.0 mol % or less, and the total content of Li.sub.2O, Na.sub.2O and K.sub.2O is 15 mol % or less.

A component has a component thickness and at least one feedthrough opening, wherein a conductor, such as a substantially pin-shaped conductor, is inserted through the feedthrough opening in a glass or glass ceramic material having a glass material outside dimension and a glazed length, wherein the component has a reinforcement in the region of the feedthrough opening with a component feedthrough opening thickness, wherein the component feedthrough opening thickness is greater than the component thickness and wherein the reinforcement has a reinforcement material outside dimension.

A component has a component thickness and at least one feedthrough opening, wherein a conductor, such as a substantially pin-shaped conductor, is inserted through the feedthrough opening in a glass or glass ceramic material having a glass material outside dimension and a glazed length, wherein the component has a reinforcement in the region of the feedthrough opening with a component feedthrough opening thickness, wherein the component feedthrough opening thickness is greater than the component thickness and wherein the reinforcement has a reinforcement material outside dimension.

Provided is a glass material that can satisfy both a high Faraday effect and a high light transmittance in a short wavelength range. A glass material contains, in % by mole, 30 to 50% Pr.sub.2O.sub.3 and 0.1 to 70% B.sub.2O.sub.3+P.sub.2O.sub.5.

Provided is a glass material that can satisfy both a high Faraday effect and a high light transmittance in a short wavelength range. A glass material contains, in % by mole, 30 to 50% Pr.sub.2O.sub.3 and 0.1 to 70% B.sub.2O.sub.3+P.sub.2O.sub.5.

A near-infrared cut filter glass includes: P, Al, R (R represents any one or more of Li, Na, and K), R (R represents any one or more of Mg, Ca, Sr, Ba, and Zn), and Cu, and not including F practically, wherein (Cu.sup.+ amount/total Cu amount)100[%] is 0.01 to 7.0%. The filter glass may further include, by mol %, 0 to 10% B.sub.2O.sub.3. The filter glass may have a fracture toughness value of the near-infrared cut filter glass is 0.3 MPa.Math.m.sup.1/2 or more. For the filter glass, a quotient obtained by dividing an absorption constant at a wavelength of 430 nm by an absorption constant at a wavelength of 800 nm, of the near-infrared cut filter glass, may be 0.00001 to 0.19.