Optical film with co-continuous phases
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United States of America Patent
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Jan 17, 2006
Grant Date -
Jan 22, 2004
app pub date -
Jul 7, 2003
filing date -
Feb 29, 1996
priority date (Note) -
Expired
status (Latency 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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