Metal coated substrates
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United States of America Patent
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Nov 30, 1999
Grant Date -
N/A
app pub date -
Jul 25, 1997
filing date -
Jul 25, 1996
priority date (Note) -
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Abstract
A coated substrate including a substrate; a stack of coating layers provided on the substrate composed of, in the sequence recited, (i) a first layer of dielectric material which is a composite layer including a sub-layer comprising a selectively absorbent material having a refractive index of at least 1.4, a spectral absorption index k.sub..lambda. of at least 0.4 in the range 380<.lambda.<450 nm and having a ratio of k.sub.380<.lambda.<450 nm /k.sub.650<.lambda.760 nm >2, (ii) a first layer of a metal selected the group consisting of silver, gold, copper and alloys of one or more thereof, and (iii) a second layer of dielectric material.
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