Ultrasonic scanning apparatus

Details Ultrasonic scanning apparatus Ultrasonic scanning apparatus

1981-05-06

1984-05-15

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

73628, G01N 2900

Patent

active

044480750

ABSTRACT:
An ultrasonic scanning apparatus includes a transducer plate, a plurality of elongated, parallel driving line electrodes arranged on one surface of the transducer plate and a plurality of elongated, parallel grounding line electrodes arranged on the opposite surface of said transducer plate. The driving line electrodes and the grounding line electrodes intersect to effectively form a matrix of individual transducer elements capable of both emitting and receiving ultrasonic beams. The apparatus includes control means to sequentially activate selected arrays of the individual transducer elements to produce and focus the resultant ultrasonic beam and to sequentially switch selected arrays of the individual transducer elements to a reception mode to vary the effective reception area of the transducer.

REFERENCES:
patent: 4012952 (1983-03-01), Dory
patent: 4112411 (1978-09-01), Alais et al.
patent: 4131023 (1978-12-01), Mezrich et al.
patent: 4161121 (1979-07-01), Zitelli et al.
patent: 4307613 (1981-12-01), Fox
patent: 4324142 (1982-04-01), Auphan et al.
patent: 4359767 (1982-11-01), Sachs et al.

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