Optical switch, and a matrix of such switches
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United States of America Patent
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Apr 15, 1986
Grant Date -
N/A
app pub date -
Mar 29, 1983
filing date -
Mar 30, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light ray (6) passes through a light-passing region of a transparent wall (1). Adjacent to said light passing region there is a wettable drop-receiving region (4,5) with a liquid (7,8) thereon. A moving member (11,12) has a rest position in which the liquid is free to occupy only the wettable drop-receiving region, and a working position in which it moves at least a portion of the liquid onto the light-passing region, thereby modifying the light ray (6). Various kinds of switches, such as an on/off switch or a deflector switch, can be devised by suitable choice of the liquid (e.g. its refractive index, or its reflecting properties), and the angle of incidence of the light ray (6). The moving member may be controlled electromagnetically.
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