Nippon Electric Glass Co., Ltd.

Tomoki Yanase

Takashi Murata

Shinkichi Miwa

Atsushi Mushiake

Masaru Nanbu

Provided is a method for manufacturing a glass fiber strand in which a glass fiber strand is formed by bundling a plurality of glass fiber filaments comprising molten glass drawn out from a nozzle, wherein said method for manufacturing a glass fiber strand is capable of detecting breakage of the glass fiber filaments in a more reliable manner. This method comprises: an image capturing step for generating a plurality of items of image data by continuously capturing images of a plurality of glass fiber filaments f; an image processing step for extracting, from the image data, a high luminance object having a luminance of a prescribed value or more; and a breakage detection step for detecting that a glass fiber filament f has broken on the basis of the results of the image processing in the image processing step.

Method for manufacturing glass fiber strand

A glass sheet has a thickness of 2 mm or less and has a refractive index nd of 1.60 or more. The glass sheet allows light emitted from an organic light-emitting layer to be efficiently extracted to the outside and has high gas-barrier properties. The glass sheet comprises 15-40 mass % of BaO.

Glass sheet

Provided is a composite substrate, including a glass sheet and a resin sheet bonded to each other, in which the glass sheet has a refractive index nd of 1.55 or more and 2.3 or less and the resin sheet has a refractive index nd of 1.55 or more and 2.3 or less.

Composite substrate

Provided is a high refractive index glass, comprising, as a glass composition in terms of mass %, 0.1 to 60% of SiO+AlO+BO, having a mass ratio (BaO+LaO+NbO+TiO+ZrO)/(SiO+AlO+BO) of 0.1 to 50, amass ratio (MgO+CaO+SrO+BaO)/(BaO+LaO+NbO+TiO+ZrO) of 0 to 10, and a mass ratio (TiO+ZrO)/(BaO+LaO+NbO) of 0.001 to 40, and having a refractive index nd of 1.55 to 2.3.

High-refractive-index glass

Provided is a high refractive index glass, comprising, as a glass composition in terms of mass %, 0 to 10% of BO, 0.001 to 35% of SrO, 0.001 to 30% of ZrO+TiO, and 0 to 10% of LaO+NbO, having a mass ratio of BaO/SrO of 0 to 40 and a mass ratio of SiO/SrO of 0.1 to 40, and having a refractive index nd of 1.55 to 2.3.

High refractive index glass

An alkali-free glass characterized by having a glass composition being substantially free of an alkali metal oxide, AsOand SbOand including, in terms of mol %, 55 to 75% of SiO, 7 to 15% of AlO, 7 to 12% of BO, 0 to 3% of MgO, 7 to 12% of CaO, 0 to 5% of SrO, 0 to 2% of BaO, 0 to 5% of ZnO and 0.01 to 1% of SnOand has a liquidus viscosity of 10dPa&#xb7;s or higher and a temperature corresponding to a viscosity of 10dPa&#xb7;s of 1,550&#xb0; C. or lower.

Alkali-free glass and alkali-free glass substrate

A technical object of the present invention is to satisfy various properties required in glass for liquid crystal displays and the like, in particular, fusibility, devitrification resistance, and like properties, and then to design a glass composition in which components harmful to the environment are reduced or substantially not contained, thereby obtaining a glass substrate that takes the environment into consideration. An alkali-free glass of the present invention contains the following glass composition in percent by weight based on oxide: 50 to 70% of SiO, 10 to 20% of AlO, 8 to 12% of BO, 0 to 3% of MgO, 4 to 15% of CaO, 0 to 10% of SrO, 0 to 1% of BaO, and 0 to 5% of ZnO, and substantially free of alkali metal oxide and AsO.

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Shiga, Japan

Tomoki Yanase