Patent ID: 7800284

Claim:
An electroacoustic transducer, for underwater use, having a body ( 10 ) composed of piezoelectric or electrostrictive ceramic, and having an electrode pair, comprising two flat electrodes ( 11 , 12 ) which are arranged on mutually averted end faces ( 101 , 102 ) of the ceramic body ( 10 ) and at least one of which is structured such that the coating density of the ceramic body ( 10 ) decreases from the body center to the body edge, wherein the structuring is carried out such that the electrode ( 11 ) is subdivided by a plurality of circumferential gaps ( 15 ) into concentric electrode sections ( 11 1 to 11 11 ) with a width which decreases as the distance of the electrode sections ( 11 1 to 11 11 ) from the central electrode section ( 11 1 ) increases, the distances between the center lines of the gaps ( 15 ) are constant, and the gaps ( 15 ) have a width which increases towards the electrode edge, and the electrode sections ( 11 1 to 11 11 ) which are separated by the gaps are electrically connected to one another.