发明名称 |
Method for making polarizing glasses through extrusion |
摘要 |
The present invention relates to the preparation of polarizing glasses from silver-containing glasses characterized by the presence of metallic silver particles therein and/or by being photochromic through the inclusion of silver halide particles therein selected from the group of AgCl, AgBr, and AgI. The method contemplates extruding the glass at a temperature between the annealing and softening points of the glass at a sufficiently high applied pressure to elongate the metallic silver and/or silver halide particles to an aspect ratio of at least 2:1 and up to 30:1 and greater. The extrudate is cooled in a manner to prevent the elongated particles from resuming their original shape. Dichroic ratios of up to 5.0 are achievable where the elongated particles exhibit an oblate configuration.
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申请公布号 |
US4282022(A) |
申请公布日期 |
1981.08.04 |
申请号 |
US19800144537 |
申请日期 |
1980.04.28 |
申请人 |
CORNING GLASS WORKS |
发明人 |
LO, KUANG-HSIN K.;NOLAN, DANIEL A. |
分类号 |
C03B32/00;C03B17/00;C03B17/06;C03C3/11;C03C4/00;C03C4/06;G02B5/30;(IPC1-7):C03B17/06;C03C3/26 |
主分类号 |
C03B32/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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