Device for optical remote monitoring and system comprising such a device
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United States of America Patent
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Nov 1, 2011
Grant Date -
Jun 5, 2008
app pub date -
Dec 8, 2005
filing date -
Dec 17, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for optical remote monitoring, preferably an optically readable membrane-based microphone, and a system including such a device is provided. The device for optical remote monitoring includes a retroreflector and an acoustic membrane. The acoustic membrane suitably is a light-modulating component and modulates the reflection of an incident light beam in relation to the pressure field, from a sound source, to which the membrane is exposed. The retroreflector may be a corner cube having three sides with the membrane arranged on one of the sides. The membrane can be part of a side or one side may consist of a membrane.
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