Resonance absorber
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United States of America Patent
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-
Apr 10, 1984
Issued Date -
N/A
app pub date -
Mar 26, 1981
filing date -
Mar 31, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improvement in a resonance absorber of refractive index n and absorption coefficient k wherein a medium of refractive index n.sub.a is disposed frontally thereof is disclosed in which the thickness of the absorption material is made equal to m.lambda./(4n), where m is the whole number closest to 2na/(.pi.k) where n equals n.sub.a and wherein the interference layers have alternatingly low and high refractive indices in that order when m is even and alternatingly high and low refractive indices in that order when m is odd.
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