EP 0166180 B1 19890201 - HYDROPHONE
Title (en)
HYDROPHONE
Publication
Application
Priority
DE 3420273 A 19840530
Abstract (en)
[origin: US4755708A] A miniature hydrophone is disclosed which contains a piezoelectric foil as a base element (2) with a linear arrangement of multiplicity of detector elements (10). In accordance with the invention, the electrodes (5) are arranged on a top surface (15) of one of the flat sides of a support (16) and are capacitively coupled by a bonding layer (6) to the base element (2). The detector elements (10) are associated with an amplifier (32) which, with equal length connecting leads (11, 26 and/or 12, 27), is fastened to a side face of the support (16). The electrical interconnection between the detector element (10) and the associated amplifier (32) employs a groove (24) through the corners of support 16. Additional such modules can form an assembly unit in a row arrangement of a size equal to that of the detector elements (10). Since all the connections (11, 26, 12, 27) to the amplifiers (32, 36) are very short and of equal length, the sensitivity of a system arrangement of such detector elements (10) and amplifiers (32 and/or 36) is homogeneous and very high.
IPC 1-7
IPC 8 full level
H04R 1/44 (2006.01); B06B 1/06 (2006.01); G10K 11/34 (2006.01); H04R 17/00 (2006.01); H04R 17/02 (2006.01)
CPC (source: EP US)
B06B 1/0622 (2013.01 - EP US); Y10S 310/80 (2013.01 - EP US)
Designated contracting state (EPC)
DE NL
DOCDB simple family (publication)
EP 0166180 A1 19860102; EP 0166180 B1 19890201; DE 3568093 D1 19890309; JP S60261293 A 19851224; US 4755708 A 19880705
DOCDB simple family (application)
EP 85106107 A 19850517; DE 3568093 T 19850517; JP 11632785 A 19850529; US 73731985 A 19850523