Nippon Electric Glass Co., Ltd.

The University of Tokyo

Tomoko Yamada

Fumio Sato

Hiroyuki Inoue

Atsunobu Masuno

Masahiro Sawada

Masaaki Hayashi

Kouji Amano

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block () of glass raw material held levitated above a forming surface () of a forming die () by jetting gas through a gas jet hole () opening on the forming surface (), the block () of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block () of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block () of glass raw material or the molten glass.

Glass material manufacturing method and glass material manufacturing device

Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. A block () of glass raw material is heated and melted by irradiation with a plurality of laser beams with the block () of glass raw material held levitated, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. The plurality of laser beams include a first laser beam (A) and a second laser beam (B). A size (&#x3b8;) of an angle formed between the first laser beam (A) and the second laser beam (B) is 0&#xb0; or more but less than 180&#xb0;. A center (C) of a spot (S) of the first laser beam (A) on the surface of the block () of glass raw material and a center (C) of a spot (S) of the second laser beam (B) on the surface of the blockof glass raw material are different from each other.

Method for manufacturing glass material and device for manufacturing glass material

Provided is a method that enables a crystal-free glass material to be stably produced by a containerless levitation technique. A glass materialhas a first surfacefacing a forming surfaceand a second surfacelocated on a side opposite to the forming surface. The first surfaceincludes a central portionand a peripheral portionlocated outside of the central portion. Gas is jetted through a gas jet hole at a flow velocity and a flow volume at which a glass material satisfying R&#x3c;R&#x3c;Ris formed where Rrepresents a radius of curvature of the central portion, Rrepresents a radius of curvature of the peripheral portion, and Rrepresents a radius of curvature of the second surface

Method for producing glass material, device for producing glass material, and glass material

Provided is a thermally stable and inexpensive infrared transmitting glass. An infrared transmitting glass containing, in % by mole, 0 to 20% Ge (exclusive of 0% and 20%), 0 to 40% Sb (exclusive of 0%), 0 to 20% Bi (exclusive of 0%), and 50 to 80% S+Se+Te.

Infrared transmitting glass

Provided is a refractory filler powder, comprising particles, each of which has precipitates of willemite and gahnite.

Refractory filler powder, sealing material, and method for producing refractory filler powder

A dye-sensitized solar cell having high long-term reliability is provided by inventing a glass composition, which is hardly eroded by an iodine electrolyte solution and has a low-melting point property, and a material using the glass composition. The glass composition for a dye-sensitized solar cell of the present invention is characterized by including as a glass composition, in terms of mass %, 20 to 70% of VOand 10 to 50% of PO.

Growing community of inventors

Otsu, Japan

Tomoko Yamada