Adaptive infrared modulator

Details Adaptive infrared modulator Adaptive infrared modulator

1996-09-23

1998-06-30

Epps, Georgia Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

G02F 1153

Patent

active

057742553

ABSTRACT:
A reversible electrodeposition electrochromic infrared modulator for modulating infrared energy is provided. The modulator includes a working electrode having an infrared transparent substrate with first and second major surfaces. A conductive layer is disposed on the second major surface of the substrate. A counter electrode is spaced from the working electrode and a sealing assembly hermetically seals the working and counter electrodes with a cavity defined therebetween. An electrolyte material containing an electrochromic material is disposed within the cavity. A reversible power source is coupled to the working and the counter electrodes for providing a reversible voltage potential between the working and the counter electrodes. A thin film of the electrochromic material plates the conductive layer of the working electrode in response to an on state voltage potential between the working and the counter electrodes. The film of the electrochromic material increases the reflectance of infrared energy incident upon the first major surface of the infrared transparent substrate.

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