Optical polarizing films
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United States of America Patent
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Jun 29, 2010
Grant Date -
Jan 3, 2008
app pub date -
Aug 13, 2007
filing date -
Dec 31, 2002
priority date (Note) -
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Abstract
Multilayer films are provided that exhibit a colored appearance when viewed at an oblique angle as a result of one or more reflection bands in the visible region of the spectrum. The films however provide no substantial reflection bands in either the visible or near infrared regions for light normally incident on the film. The films can be made to shift from clear at normal incidence to an arbitrary designed color at an oblique angle without necessarily becoming cyan.
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