Solar control window film

Optical: systems and elements – Having significant infrared or ultraviolet property – Multilayer filter or multilayer reflector

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Details

359361, G02B 522, G02B 526

Patent

active

059561750

ABSTRACT:
A solar control window film having high visible light transmission and low transmission of near infrared heat energy is comprised of a transparent substrate bearing a thin, optically transparent layer of metal, an optically transparent layer of near infrared energy absorbing material and a transparent layer of protective material overlying and protecting the near infrared energy absorbing material and the metal. The near infrared reflecting properties and the near infrared absorbing properties of the respective layers are balanced to provide selective solar heat rejection without excessive transfer of heat into the window glass or glazing material.

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Azurlite.RTM. Glass Solar Control Window System, PPG Industries, Inc. 3 pages, Feb. 1994.
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