ACOUSTIC CONVERTER, ACOUSTIC CONVERTER SYSTEM, OPTICAL HYDROPHONE, ACOUSTIC CONVERTER ARRAY AND WATERCRAFT
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United States of America Patent
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Aug 11, 2016
app pub date -
Aug 12, 2014
filing date -
Sep 17, 2013
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Abstract
The invention relates to an acoustic converter (101), in particular a hydrophone (103), comprising an interferometer and an associated first vibration element (151, 251), which is maintained by a support. Said interferometer comprises a light source (111), a first signal beam (113), a signal beam splitter, a first reference beam (115), a first scanning beam (117), a first measuring beam (119) and an optical sensor (141). Said light source emits the first signal beam and the first reference beam and the first measuring beam are superimposed onto the optical sensor. The first scanning beam is directed to the first vibration element and the first measuring beam causes a Doppler shift with respect to the first scanning beam based on a vibration of the first vibration element, characterized in that the first vibration element is arranged in a first liquid.
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