ACOUSTIC CONVERTER, ACOUSTIC CONVERTER SYSTEM, OPTICAL HYDROPHONE, ACOUSTIC CONVERTER ARRAY AND WATERCRAFT

摘要

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.

主权项

1. Acoustic converter (101), in particular a hydrophone (103), with an interferometer and an associated first vibration element (151, 251), which is maintained by a support,
wherein the 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), wherein the light source emits the first signal beam and the first reference beam and the first measuring beam are superimposed onto the optical sensor, with the first scanning beam being directed to the first vibration element, wherein the first measuring beam causing a Doppler shift with respect to the first scanning beam based on a vibration of the first vibration element, wherein the first vibration element is arranged in a first liquid, wherein the first vibration element is further characterized by at least one of the following:
a self-resonance of the first vibration element is designed in such a way that the self-resonance is outside a measuring range,the first vibration element is fully enclosed in a protective medium other than the first liquid,the first vibration element is a hollow body (251), orthe first vibration element is a membrane (151).