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Publication numberUSH2049 H1
Publication typeGrant
Publication dateOct 1, 2002
Filing dateJan 6, 2000
Priority dateAug 24, 1998
Publication numberUS H2049 H1, US H2049H1, US-H1-H2049, USH2049 H1, USH2049H1
InventorsShamachary Sathish, Mark J Ruddell, Robert L Crane
Original AssigneeUs Air Force
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Differential property sensitive acoustic lens
US H2049 H1
Abstract
A differential property sensitive acoustic lens for non-destructive materials evaluation is described which in a preferred embodiment comprises first and second substantially semicylindrical shaped portions of fused silica disposed in closely spaced relationship along an axial plane, a substantially spherical depression defined in one end of each semicylindrical portion and a flat defined on each semicylindrical portion at the other end, a piezoelectric transducer attached to the flat of each semicylindrical portion, and a paraffin coated aluminum film of preselected thickness disposed between and in laminar contact with the semicylindrical portions for preventing acoustic and electrical cross talk between the transducers and between the semicylindrical portions.
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Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4852575 *Feb 26, 1988Aug 1, 1989North American Philips CorporationUltrasound flow measurement apparatus
US4881618 *Jun 2, 1987Nov 21, 1989Olympus Optical Co., Ltd.Acoustic lens for use in acoustic microscope
US4967873 *Jul 21, 1989Nov 6, 1990Olympus Optical Co., Ltd.Acoustic lens apparatus
US5094108 *Sep 28, 1990Mar 10, 1992Korea Standards Research InstituteUltrasonic contact transducer for point-focussing surface waves
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8616329 *Oct 30, 2012Dec 31, 2013The United States Of America As Represented By The Secretary Of The Air ForceAir coupled acoustic aperiodic flat lens
US20080195003 *Dec 18, 2007Aug 14, 2008Sliwa John WHigh intensity focused ultrasound transducer with acoustic lens
Classifications
U.S. Classification73/642, 367/150, 181/176, 310/335, 600/472
International ClassificationG01N29/24, G10K11/30
Cooperative ClassificationG01N29/2462, G01N2291/0423, G01N29/2437, G01N29/0681, G01N29/2456, G10K11/30
European ClassificationG10K11/30, G01N29/24F, G01N29/24G, G01N29/06D3, G01N29/24E