Asahi Glass Company, Limited

Agc Inc.

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Yuki Kondo

Kenji Imakita

Kazuhiko Yamada

Yoshitake Toda

Hiroyuki Ohkawa

Yuki Aoshima

Jun Sasai

Misa Inamoto

Hiroshi Kaga

An oxide ion-conducting solid electrolyte containing a mayenite-type compound having a representative composition represented by CaAlO, and 9 mol % to 30 mol % of titanium (Ti) in terms of TiO.

Oxide ion-conducting solid electrolyte

The present invention relates to a glass sheet including a first main surface and a second main surface opposing the first main surface, in which the glass sheet has an affected layer directly below the first main surface, in at least a part of the first main surface, an average element length RSm is from 2500 nm to 6000 nm, a root-mean-square height Sq is from 3 nm to 45 nm, and a skewness Ssk is a negative value.

Glass plate, glass plate having anti-reflection layer, and method for producing glass plate

The present invention relates to an optical glass containing, in terms of mass % on the basis of oxides, BO: 10 to 20%, SiO: 0.5 to 12%, ZnO: 5 to 19%, TaO: 2.5 to 17%, LiO: 0.2 to 3%, ZrO: 0.6 to 4.9%, WO: 1 to 20%, LaO: 25 to 50%, GdO: 0 to 13%, and YO: 0.2 to 20%, provided that LaO+GdO+YOis 35 to 60%, in which the optical glass does not substantially contain NbO, and has a refractive index (n) of 1.82 to 1.86, an Abbe's number (&#x3bd;) of 37 to 44 and a glass transition point (T) of 630&#xb0; C. or lower.

Optical glass

An object of the invention is to provide an optical glass for precision press having optical properties of a high refractive index and a low dispersion property and having a low molding temperature, a high devitrification resistance, an excellent molding property, and a small specific gravity. The optical glass of the invention contains, in terms of % by mass on the basis of oxides, respective components of BO: 10 to 20%, SiO: 0.5 to 12%, LaO: 25 to 50%, GdO: 0 to 20%, YO: 0 to 20%, provided that LaO+GdO+YO: 35 to 60%, ZnO: 5 to 20%, LiO: 0.2 to 3%, ZrO: 0 to 0.5%, TaO: 3 to 18% and WO: 3 to 20%, and has optical constants of a refractive index nof 1.84 to 1.86 and an Abbe number vof 37 to 42 and a glass transition point (T) of 630&#xb0; C. or lower.

Optical glass and preforms for precision press molding and optical elements made by using the glass

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Tokyo, Japan

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