COLOURED DICHROIC BIREFRINGENT GLASS ARTICLES PRODUCED BY OPTICAL ALTERATION OF ADDITIVELY-COLOURED GLASSES CONTAINING SILVER AND SILVER HALIDES

摘要

1534838 Altered silver-silver halide glass CORNING GLASS WORKS 3 Nov 1977 [5 Nov 1976] 45743/77 Heading C1M A permanently coloured dichroic birefringent glass is made by irradiating at least a portion of an additively coloured silver-silver halide containing glass with polarized light (e.g. laser light). The base glass may be a phase separated borosilicate glass or a thermally darkenable or silver stained photochromic glass.