Electronically adjustable mechanical lens for ultrasonic linear

Details Electronically adjustable mechanical lens for ultrasonic linear Electronically adjustable mechanical lens for ultrasonic linear

1985-08-20

1987-06-02

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310335, 310366, H01L 4108

Patent

active

046706836

ABSTRACT:
An electronically adjustable mechanical lens for ultrasonic linear array and phased array imaging having strip-like electrodes in the longitudinal direction of the array. Electronic delays are applied to signals going to or coming from the electrodes in both the transverse plane and the longitudinal plane to correct for phase errors which would normally occur when the mechanical lens is out of focus. This results in increased depth of field for the transducer lens.

REFERENCES:
patent: 4155259 (1979-05-01), Engeler
patent: 4211949 (1980-07-01), Brisken et al.
patent: 4217516 (1980-08-01), Iinuma et al.
patent: 4242912 (1981-01-01), Burckhardt et al.
patent: 4326418 (1982-04-01), Pell, Jr.
patent: 4385255 (1983-05-01), Yamaguchi et al.
patent: 4437033 (1984-03-01), Diepers
patent: 4550606 (1985-11-01), Drost

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