An optical element manufacturing device includes a mold set including: a first shaping mold and a second shaping mold facing each other with a shaping-target material between the first and second shaping molds, and a sleeve located around the first and second shaping molds; and a plurality of stages on which the mold set is conveyed and which heat, press or cool the shaping-target material. The sleeve is conveyed to the stages in such a manner that a conveyance-direction front side of the mold set in an arrangement direction of the plurality of stages has a heat insulation portion with a heat insulation property that is higher than that on a conveyance-direction rear side of the mold set in order to reduce a temperature distribution in the shaping-target material.

An optical element manufacturing device includes a mold set including: a first shaping mold and a second shaping mold facing each other with a shaping-target material between the first and second shaping molds, and a sleeve located around the first and second shaping molds; and a plurality of stages on which the mold set is conveyed and which heat, press or cool the shaping-target material. The sleeve is conveyed to the stages in such a manner that a conveyance-direction front side of the mold set in an arrangement direction of the plurality of stages has a heat insulation portion with a heat insulation property that is higher than that on a conveyance-direction rear side of the mold set in order to reduce a temperature distribution in the shaping-target material.

Disclosed is a method of preparing a solid electrolyte composition for a lithium secondary battery which includes: (a) mixing materials including Li.sub.2O, SiO.sub.2, TiO.sub.2, P.sub.2O.sub.5, BaO, Cs.sub.2O and V.sub.2O.sub.5; (b) melting the mixed materials; (c) rapidly cooling the molten materials at room temperature and compressing the molten materials using a preheated plate to form electrolyte glass having a predetermined thickness; (d) heating the electrolyte glass to eliminate stress at a predetermined temperature range; (e) heating the electrolyte glass to a higher temperature range higher than in the step of heating the electrolyte glass to eliminate stress to be crystallized; and (f) precisely adjusting a thickness of the electrolyte glass by lapping the electrolyte glass.

Provided are a forming apparatus for forming a part of a flat panel-shaped glass in a curved surface by selectively heating only a formation part, and a forming method using the same. The forming apparatus includes a transfer device configured to transfer material having a flat panel shape and a curved surface forming device configured to form at least one part of the material in a curved surface, wherein the curved surface forming device includes a forming mold on which the material is seated, a heating unit configured to heat the at least one part of the material by laser light, and a jig unit configured to form the at least one part of the material heated by laser light in a curved surface.

An optical element manufacturing apparatus includes plural pairs of stage units that are each arranged opposite to each other so as to sandwich a mold set that houses a molding material, each of the plural pairs of stage units performing at least one of heating, pressurization, and cooling on the mold set, wherein each of the stage units includes a temperature control block for which temperature is controlled, and in a third direction orthogonal to a first direction and a second direction, the temperature control block includes heating regions that are positioned on sides of both ends and in which heating sources are arranged, and a non-heating region that is positioned on a central side and in which the heating sources are not arranged throughout the first direction, the first direction being a direction in which the plural pairs of stage units are arranged, and the second direction being a direction in which a pair of stage units are opposite to each other.

A method of manufacturing a window includes a thermoforming step of pressurizing and thermoforming a first window disposed between a pressing frame and a receiving frame to form a second window, by moving the pressing frame in a first direction facing the receiving frame, wherein the first window includes a first flat portion, first curved portions bent at a curvature from the first flat portion, and a first corner portion between two adjacent first curved portions among the first curved portions, and the second window includes a second flat portion, second curved portions bent at a curvature from the second flat portion, and a second corner portion between two adjacent second curved portions among the second curved portions.

A method for texturing a substrate includes 3-D printing a pattern onto a substrate to form a texture. The pattern has a root mean square roughness between 40 to 1000 microns and an autocorrelation function greater than 0.5 for distances less than 50 microns.

A copper ion-doped polychromatic fluorescent glass and a preparation method and use thereof are provided. The fluorescent glass has a chemical formula shown as the following: aP.sub.2O.sub.5-bSiO.sub.2-cZnO-dCs.sub.2CO.sub.3-eNaCl-fCuCl, wherein a, b, c, d, e, and f in the formula represent the molar coefficients of compounds, wherein a is 45 to 65, b is 10 to 30, c is 1 to 5, d is 5 to 20, e is 5 to 20, f is 0.1 to 5. The fluorescent can achieve blue, orange and near-infrared photoluminescence under the UV light with higher fluorescent quantum yield.

A curved glass and a preparation method is provided. The preparation method for curved glass includes: melting a glass batch into a glass liquid, and clearing the glass liquid; introducing the cleared glass liquid into a mold cavity with a preset shape, and forming, by using a compression molding process, a glass product with a shape corresponding to that of the curved glass, where a size of the glass product is greater than a size of the curved glass; annealing the molded glass product; and processing the annealed glass product into the curved glass based on the shape and the size of the curved glass.