Reversible radiant energy filter and process of using same

Details Reversible radiant energy filter and process of using same Reversible radiant energy filter and process of using same

1969-06-06

1976-04-20

Sikes, William L.

350312, G02F 117

Patent

active

039515214

ABSTRACT:
This application relates to an electrolytic process for regulating the transmission of radiant energy, and a radiant energy filter for use in said process. The filter comprises a first film having a dye and a first ionic species therein, an adjacent second film having a second ionic species therein, said first ionic species and said second ionic species being related by a reversible electrochemical reaction, and barrier means positioned between said first and second films for preventing the passage therethrough of said dye, said first ionic species, and said second ionic species but permitting the passage therethrough of current-carrying ions. By passing current through said filter, the color of said dye can be caused to change whereby the transmission of radiant energy can be regulated.

REFERENCES:
patent: 2632045 (1953-03-01), Sziklai
patent: 3169163 (1965-02-01), Nassenstein
patent: 3283656 (1966-11-01), Jones et al.
patent: 3303488 (1967-02-01), Anderson

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