Shutter for fiber optic systems
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United States of America Patent
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-
Sep 2, 2003
Grant Date -
Jun 13, 2002
app pub date -
Sep 29, 2001
filing date -
Sep 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light shutter for controlling a light signal between occluded and uninterrupted states. The shutter has a frame which mounts a beam under compression so that it assumes either of two bi-stable buckled positions. An occluder is mounted on the beam, A shape memory alloy actuator is provided which applies a force transverse on the beam as the actuator is heated to its shape change transition temperature. The transverse force bends the beam, causing it to buckle to the opposite bi-stable position. This moves the occluder into or out of the path of the light signal.
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