Abstract: Provided is a glass substrate for a solar cell, including as a glass composition, in terms of mass %, 40 to 70% of SiO2, 1 to 20% of Al2O3, and 1 to 20% of Na2O, and having a water content in glass of less than 25 mmol/L.

Abstract: Provided is a glass, including, as a glass composition, in mass % in terms of the following oxides, 40 to 65% of SiO2, 2 to 20% of Al2O3, 0 to 20% of B2O3, 0 to 15% of MgO, 0 to 15% of CaO, 0 to 20% of SrO, 0 to 20% of BaO, 0 to 10% of Li2O, 0.1 to 20% of Na2O, 0.1 to 20% of K2O, 0 to 10% of ZrO2, 0 to less than 0.04% of Fe2O3, and 0 to 0.5% of SO3, in which a transmittance of the glass with a thickness of 1.8 mm at a wavelength 1,100 nm is 86 to 92%.

Abstract: Provided is an ion-conducting material, comprising, as a composition in terms of mol o, 15 to 80% of P2O5, 0 to 70% of SiO2, and 5 to 35% of R2O, which represents the total content of Li2O, Na2O, K2O, Rb2O, Cs2O, and Ag2O.

Abstract: A method of manufacturing a glass substrate for a display including the steps of: preparing a glass raw material blended so as to adjust as, on the basis of mass percentage, SiO2 40-70%, Al2O3 2-25%, B2O3 0-20%, MgO 0-3.5%, CaO 0-15%, SrO 0-10%, BaO 0-2%, ZnO 0-10%, R2O 0-25% (where R denotes at least one of Li, Na and K), As2O3 0-0.4%, Sb2O3 0-0.9%, and 0.1%<SnO2<0.5%; and melting the material and forming the substrate with contact with a platinum group element or a platinum group element alloy in at least a part of the melting and forming; wherein the substrate has a surface area of 0.1 m2 or more, a thickness of 2.5 mm or less, and surface projections of 2 pieces/m2 or less, the surface not being ground, and wherein the substrate has 40 pieces/kg or less of stones of a platinum group element or a platinum group element alloy.

Abstract: The invention provides a glass substrate for a display, having a surface area of 0.1 m2 or more and a thickness of 2.5 mm or less and to be used for a display.

Abstract: A plurality of rotational members which comprise an inner shell and an outer shell rotatable relative to each other and in which a soluble film is fixed to the inner periphery or the outer periphery of one of the shells, the shell with the soluble film fixed thereto is the shaping mold of a molding machine for molding the other shell, and a plurality of rotational members comprising an inner shell and an outer shell are molded through the soluble film, whereafter the soluble film is dissolved and removed.

Abstract: A lens tube unit composed of an intermediate tube composed of metal or resin and provided with a helicoid or helicoids on the internal periphery and/or external periphery; and an inner tube and an outer tube fitted with or screwed in the internal and external peripheries of the intermediate tube and provided with a fitting portion or helicoid; and the outer and/or inner tube is molded as a sandwich structure consisting of a central core resin layer and skin resin layers.