Free-space optically accessed acoustically modulated retro-reflector arrays
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United States of America Patent
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Jun 28, 2016
Grant Date -
Feb 26, 2015
app pub date -
Aug 23, 2013
filing date -
Aug 23, 2013
priority date (Note) -
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Abstract
Systems and techniques are provided for transmitting a light towards a plurality of acousto-optic retro reflectors, arranged as an array, that are configured to physically react to an acoustic signal. The physical reaction modulates the transmitted light which is reflected back towards a light detector and analyzed. The analysis may include detecting an acoustic signal source location and/or reconstructing the acoustic signal. A light scanner may be configured to transmit the light towards the plurality of acousto-optic retro reflectors in a predetermined, continuance, or dynamically determined sequence.
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