System for filtering radio frequency and infrared optical transmissions
AssigneeMadico, Inc.
InventorsPeter K. Barrett, David W. Avison, Steven Carlson
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Abstract
The present invention pertains to anti-surveillance security windows comprising one or more conductive glass substrates and one or more layers comprising an organic radical cation compound, wherein the layers reflect in the infrared region. Preferably, the organic radical cation compound is a salt of an aminium radical cation. The security windows may further comprise one or more layers of a multilayer interference stack of a metal/metal or metal/metal oxide design.
Claims27
A security window comprising one or more conductive glass substrates and one or more layers comprising an organic free radical compound that is reflective at a range of wavelengths in the infrared.
A security window comprising one or more conductive glass substrates, one or more layers comprising an organic free radical compound that is reflective at a range of wavelengths in the infrared, and one or more layers of a multilayer interference stack comprising alternating layers of a first metal and a second metal where the index of refraction of alternating layers is varied.
A security window comprising one or more conductive glass substrates, one or more layers comprising an organic free radical compound that is reflective at a range of wavelengths in the infrared, and one or more layers of a multilayer interference stack comprising one or more layers of a multilayer interference stack comprising alternating layers of a metal and a metal oxide where the index of refraction of alternating layers is varied.
Dependencies are inferred from the claim text.