Device for the detection of an acoustic image

Details Device for the detection of an acoustic image Device for the detection of an acoustic image

1974-04-15

1976-08-03

Farley, Richard A.

Communications: electrical

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Intelligence comparison for controlling

73 677, 313369, H01J 31495

Patent

active

039732355

ABSTRACT:
Apparatus for the detection of an acoustic image by means of an election tube including a face plate and an electronically scanned transducer made of a thin foil of polymer material whose acoustic wave velocity of propagation is less than 1.8 that of a liquid imaging medium. The face plate also is made of a polymer material having a velocity of propagation less than 1.8 that of said liquid. Preferably, the transducer foil is much thinner than the face plate and has a thickness approximately 0.5 times the acoustic wavelength.

REFERENCES:
patent: 3325777 (1967-06-01), Fyler
patent: 3622825 (1971-11-01), Bennett

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