Ultrasonic sensor

Details Ultrasonic sensor Ultrasonic sensor

1990-02-01

1991-10-08

Steinberger, Brian S.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367165, 367163, 310324, 181148, 181175, H04R 1700, H01L 4108

Patent

active

050560697

ABSTRACT:
An ultrasonic sensor which is particularly suited to measuring the sound-pressure amplitude in the focus range of a lithotripter and includes in a region a piezoelectrically activated polymeric foil, which is coupled to electrodes. The polymeric foil is mounted in a housing, which has a convex curved, dome-shaped surface at least in one region located opposite one of the flat sides of the polymeric foil. A simple measurement of the sonic field is thus made possible directly on the rubber-diaphragm encased, water-filled delay path of the lithotripter.

REFERENCES:
patent: 4475376 (1984-10-01), Keilman
patent: 4535205 (1985-08-01), Ravinet et al.
patent: 4674505 (1987-06-01), Pauli
patent: 4734611 (1988-03-01), Granz
patent: 4821838 (1989-04-01), Chen
Ultrasonics, May 1980, pp. 123-126.

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