Method of and apparatus for producing spherical waves in the ult

Details Method of and apparatus for producing spherical waves in the ult Method of and apparatus for producing spherical waves in the ult

1996-09-26

1998-10-27

Tudor, Harold J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

181177, 181192, 73642, 310335, 381154, H04R 1700, G10K 1108

Patent

active

058286276

ABSTRACT:
A generator for spherical ultrasonic waves can replace a point source transducer and has a large-area transducer whose output ultrasonic waves are condensed in a funnel and fed to a monomodal waveguide, e.g. a tube at the output end of which phase-correct perfectly spherical waves are emitted.

REFERENCES:
patent: 1358883 (1920-11-01), Seabrook
patent: 3934460 (1976-01-01), Sherwin et al.
patent: 4320475 (1982-03-01), Leclerc et al.
patent: 4536861 (1985-08-01), Graindorge

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