Devices using ultrasounds for forming images, in particular for

Details Devices using ultrasounds for forming images, in particular for Devices using ultrasounds for forming images, in particular for

1978-04-27

1980-05-27

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

128660, G01N 2900

Patent

active

042044359

ABSTRACT:
The invention relates to a probe for a device forming images from ultrasounds, in particular for the internal examination of the human body. The probe comprises transducers distributed in a curved array providing the possibility of a sectorial angular scanning and of generating ultrasonic beams converging towards a localized area where is arranged either a screen opaque to ultrasounds and formed with one or two openings in the vicinity of the center of converging area, with one or two lenses for ultrasounds in said opening or openings, either one or two electronic lenses formed with means for converting in parallel ultrasounds into electric signals, apparatus for differentially delaying the electric signals and apparatus for converting in parallel the electric signals, after a delay, into ultrasounds.

REFERENCES:
patent: 3269173 (1966-08-01), Von Ardenne
patent: 3402598 (1968-09-01), Colgate
patent: 3922907 (1975-12-01), Hurwitz et al.

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