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.
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
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