Method for manufacturing an acoustic sensor, and acoustic sensor

Details Method for manufacturing an acoustic sensor, and acoustic sensor Method for manufacturing an acoustic sensor, and acoustic sensor

1991-10-22

1994-03-08

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367165, 367180, 367140, 310337, 310800, 29594, H04R 1700

Patent

active

052933539

ABSTRACT:
The invention relates to a method for manufacturing an acoustic sensor, and also to the sensor. The sensor comprises a piezoelectric sheet (12) mounted on a support (14) and electrically connected to electrodes (16,18) connected by electrical conductors (20,22) to a measurement device, characterized in that the assembly constituted by the sheet (12) and its support (14) is coated with a one-piece polymerizable coating layer (24) which is preferably electrically insulating, such that the portion (24a) of the coating layer (24) overlying the sheet (12) constitutes a protective layer which is rendered non-detachable or essentially non-detachable from the piezoelectric sheet (12). The method for manufacturing this sensor is extremely simple and inexpensive, and the protective layer is non-detachable.

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K. F. Bainton et al.: "An Easily Constructed, Broad Bandwith Ultrasonic Probe For Research Purposes", Journal of Physics E. Scientific Instruments, vol. 14, No. 11, Nov. 1981, The Institute of Physics (Dorking, GB), pp. 1313-1319.

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