Method of making a color filter by precipitation of Cu.sub.2 O f

Details Method of making a color filter by precipitation of Cu.sub.2 O f Method of making a color filter by precipitation of Cu.sub.2 O f

1995-07-31

1996-07-30

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 66, 501 67, 501 70, 501 13, 501905, C03C 3089, C03C 3093, C03C 3087, C03C 402

Patent

active

055411428

ABSTRACT:
A non-photochromic colored glass containing crystals of precipitated cuprous oxide in a matrix of glass, the matrix glass consisting essentially of, in cation percent, 35-75% SiO.sub.2, 15-45% B.sub.2 O.sub.3, 0-12% Al.sub.2 O.sub.3, the Al.sub.2 O.sub.3 being less than 10% when the SiO.sub.2 is over 55%, 0-5% ZrO.sub.2, 0-12% Li.sub.2 O, 0-20% Na.sub.2 O, 0-12% K.sub.2 O, the sum Li.sub.2 O+Na.sub.2 O+K.sub.2 O being 5-20%, 0-5% CaO+BaO+SrO, 0.4-1.75% Cu.sub.2 O, 0-2% As.sub.2 O.sub.3, 0-2% Sb.sub.2 O.sub.3, 0-1% SnO.sub.2, the sum As.sub.2 O.sub.3 +Sb.sub.2 O.sub.3 +SnO.sub.2 being 0.5-2%, characterized by 0.075.ltoreq.R-value .ltoreq.0.65, where R-value= ##EQU1##

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R. J. Araujo and S. D. Stookey, Applied Optics, 7 (1968), p. 778. (no month).

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