Transducer for electronic focal scanning in an ultrasound imagin

Details Transducer for electronic focal scanning in an ultrasound imagin Transducer for electronic focal scanning in an ultrasound imagin

1981-04-30

1983-08-09

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310337, 310367, H01L 4108

Patent

active

043981160

ABSTRACT:
The ultrasonic transducer contains a plurality of adjacently positioned piezoelectric segments which are arranged concentrically. Each of the segments contains a number of linear parallel grooves, whereby these grooves define spaced surface areas therebetween. Each of the surface areas comprises respectively a piezoelectric element. The individual grooves are approximately annular when the segments are assembled. They decouple the piezoelectric elements acoustically from each other. Preferably, the segments each have a triangular shape.

REFERENCES:
patent: 3470394 (1969-09-01), Cook et al.
patent: 3496617 (1970-02-01), Cook et al.
patent: 3718898 (1973-02-01), Cook et al.
patent: 3924259 (1975-12-01), Butler et al.
patent: 4051455 (1977-09-01), Fowler
patent: 4211948 (1980-07-01), Smith et al.
patent: 4268912 (1981-05-01), Congdon
patent: 4305014 (1981-12-01), Borburgh et al.

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