Optical film with sharpened bandedge
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United States of America Patent
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Nov 22, 2005
Issued Date -
N/A
app pub date -
Aug 9, 2000
filing date -
Jan 13, 1998
priority date (Note) -
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Abstract
The present invention provides reflective films and other optical bodies which exhibit sharp bandedges on one or both sides of the main reflection bands. The optical bodies comprise multilayer stacks M1 and M2, each having first order reflections in a desired part of the spectrum and comprising optical repeating units R1 and R2, respectively. At least one of the optical repeating units R1 and R2 varies monotonically in optical thickness along the thickness of the associated multilayer stack.
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