Visibly transparent infrared reflecting film with color masking
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United States of America Patent
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Aug 3, 1993
Grant Date -
N/A
app pub date -
May 27, 1992
filing date -
May 27, 1992
priority date (Note) -
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Abstract
A polymeric multilayered film which reflects wavelengths of light in the infrared region of the spectrum while being substantially transparent to wavelengths of light in the visible spectrum without the effects of visibly perceived iridescent color is provided. The polymeric multilayered infrared reflecting film comprises at least two diverse, substantially transparent polymeric materials, with the layers having an optical thickness of between 0.09 .mu.m and 0.45 .mu.m and the polymeric materials having a different index of refraction such that light is reflected in the infrared portion of the spectrum. A color masking film is associated with the polymeric film which reflects light substantially uniformly over the visible portion of the spectrum to eliminate perceived iridescent color.
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