VISIBLY TRANSPARENT BROADBAND INFRARED MIRROR FILMS

Multilayer infrared (IR) reflecting films are provided. An optical repeating unit of the film include a plurality of optical polymeric layers arranged to reflect light by constructive and destructive interference. Optical layer A is a high refractive index polymeric layer, and optical layer B is a l...

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Bibliographische Detailangaben
Hauptverfasser: O'NEILL, Mark B, KUNCIO, Stephen J, JOHNSON, Stephen A, HEBRINK, Timothy J, KIVEL, Edward J, NEVITT, Timothy J, GILBERT, Laurence R, SORENSEN, Tracey D
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Multilayer infrared (IR) reflecting films are provided. An optical repeating unit of the film include a plurality of optical polymeric layers arranged to reflect light by constructive and destructive interference. Optical layer A is a high refractive index polymeric layer, and optical layer B is a low refractive index isotropic polymeric layer containing fluoropolymers. The film has an average reflectance of about 50% to about 100% in a near infrared wavelength range of about 850 nm to about 1850 nm, and an average transmission of about 70% to about 90% in a visible light range.