Electrically activated thermochromic optical shutters
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United States of America Patent
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Jun 11, 1996
Issued Date -
N/A
app pub date -
Oct 18, 1993
filing date -
Dec 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical shutter which responds to temperature may be caused to respond to an electrical current by placing a transparent conductor of electricity parallel to and in thermal contact with it, and by running an electrical current through the transparent conductor, such that the transparent conductor is resistively heated, and thereby heats the optical shutter. The above transparent conductor may be used simultaneously as a component of a transparent insulation. The electrical current may be controlled by a photosensor, a temperature sensor, a thermostat, and/or a manual switch.
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