Acoustic lens apparatus

Details Acoustic lens apparatus Acoustic lens apparatus

1989-07-21

1990-11-06

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Lens

G10K 1130

Patent

active

049678736

ABSTRACT:
In an acoustic lens apparatus of this invention, a lens surface formed on an ultarsonic medium has a longitudinal wave lens portion constituted by a first aspherical surface at its central area, and a transverse wave lens portion constituted by a second aspherical surface at its peripheral area. The ultrasonic medium includes a piezoelectric transducer for generating ultrasonic waves at its surface opposite to the lens surface. The ultrasonic medium is arranged so that the lens surface opposes a sample, a coupler medium is filled in the gap between the surface and the sample.

REFERENCES:
patent: Re32062 (1986-01-01), Samodovitz
patent: 3687219 (1972-08-01), Langlois
patent: 3903990 (1975-09-01), Tannaka
patent: 4193473 (1980-03-01), Hartmann

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