Radiation modulating apparatus and method

Details Radiation modulating apparatus and method Radiation modulating apparatus and method

1984-04-19

1986-10-21

Corbin, John K.

350355, 350166, 350 17, G02B 528

Patent

active

046182187

ABSTRACT:
A pair of planar electrodes spaced from one another by an electrolyte. The front electrode faces the air or vacuum environment and is transparent, and the second electrode is in thermal contact with a heat conducting surface and is reflective. By selectively modifying the voltage between the two electrodes, a partially reflective coating can be deposited on the back face of the front electrode or removed therefrom. With the coating removed, the emission of thermal radiation is minimized, and a major portion of the radiation from sources in the environment is reflected. With the coating present, emitted or reflected radiation interacting with the coating interferes destructively with the radiation emitted or reflected by the second electrode, maximizing thermal emission and absorbing a major portion of any incident radiation.

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