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(11) | EP 1 819 191 A8 |
(12) | CORRECTED EUROPEAN PATENT APPLICATION |
Note: Bibliography reflects the latest situation |
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(54) | Laminated piezoelectric transducer |
(57) An underwater acoustic transducer (10) comprising a laminated waterproof and sealed
active acoustic element (14) for transducing sound and electrical signals; a front
and rear housing element (24) disposed on each side of the active acoustic element
(14) to define a corresponding front and rear acoustic chamber on each side of the
active acoustic element (14), each housing element (24) defining a corresponding port
(30) therethrough of a predetermined diameter and thickness to provide tuning of the
corresponding acoustic chamber and to provide free flooding acoustic chambers; and
a rear cover (38) disposed on the rear housing element (38) and defining a corresponding
port (40) therethrough of a predetermined diameter and thickness to provide further
tuning of the corresponding rear acoustic chamber while maintaining the free flooding
characteristic of the rear acoustic chamber.
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