公开(公告)号：US20190127258A1

公开(公告)日：2019-05-02

申请号：US16232346

申请日：2018-12-26

Applicant: Nippon Electric Glass Co., Ltd.

Inventor： Kouichi YABUUCHI ,  Tomoaki KAWAMURA ,  Hirokazu TAKEUCHI

IPC: C03B17/06 ,  G02B5/30 ,  C03B23/037 ,  G02B27/28 ,  C03C3/04 ,  C03C4/00 ,  C03C14/00 ,  C03C3/11

Abstract: 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: L1/W1≥1.0 where L1 represents 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 W0, and W1 represents a length equivalent to 0.5 times the original width W0 of the glass preform sheet.

公开(公告)号：US20170174547A1

公开(公告)日：2017-06-22

申请号：US15321320

申请日：2015-06-17

Applicant: Nippon Electric Glass Co., Ltd.

Inventor： Kouichi YABUUCHI ,  Tomoaki KAWAMURA ,  Hirokazu TAKEUCHI

IPC: C03B17/06 ,  C03C3/04 ,  C03C4/00 ,  C03C14/00 ,  G02B5/30

CPC classification number: C03B17/06 ,  C03B23/037 ,  C03B32/00 ,  C03C3/04 ,  C03C3/11 ,  C03C4/00 ,  C03C14/004 ,  C03C14/006 ,  C03C2203/52 ,  C03C2214/04 ,  C03C2214/08 ,  C03C2214/16 ,  C03C2214/30 ,  G02B5/30 ,  G02B5/3041 ,  G02B5/3058 ,  G02B27/28 ,  Y02P40/57

Abstract: 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: L1/W1≧1.0 where L1 represents 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 W0, and W1 represents a length equivalent to 0.5 times the original width W0 of the glass preform sheet.