Multilayer film having a continuous and disperse phase
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United States of America Patent
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Oct 31, 2000
Issued Date -
N/A
app pub date -
Jan 19, 2000
filing date -
Feb 29, 1996
priority date (Note) -
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Abstract
An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.
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