Nippon Electric Glass Co., Ltd.

Kouichi Yabuuchi

Hirokazu Takeuchi

Tomoaki Kawamura

A method of manufacturing a polarizing glass sheet includes subjecting, while heating, a glass preform sheet containing metal halide particles to down-drawing, to thereby provide a glass member having stretched metal halide particles dispersed in an aligned manner in a glass matrix, and subjecting the glass member to reduction treatment to reduce the stretched metal halide particles, to thereby provide a polarizing glass sheet. A shape of the glass preform sheet during the down-drawing satisfies a relationship of the following expression:&#x2265;1.0where Lrepresents a length between a portion in which a width of the glass preform sheet has changed to 0.8 times an original width and a portion in which the width of the glass preform sheet has changed to 0.2 times the original width W, and Wrepresents a length equivalent to 0.5 times the original width Wof the glass preform sheet.

Polarizing glass sheet set for optical isolator and method for manufacturing optical element for optical isolator

Polarizing glass plate and method for manufacturing same, polarizing glass plate set for optical isolator, and method for manufacturing optical element for optical isolator

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Shiga, Japan

Kouichi Yabuuchi