GB1554349A - Variable focus ultrasonic transducer means - Google Patents

Variable focus ultrasonic transducer means

Info

Publication number
GB1554349A
GB1554349A GB1018877A GB1018877A GB1554349A GB 1554349 A GB1554349 A GB 1554349A GB 1018877 A GB1018877 A GB 1018877A GB 1018877 A GB1018877 A GB 1018877A GB 1554349 A GB1554349 A GB 1554349A
Authority
GB
United Kingdom
Prior art keywords
ultrasonic transducer
variable focus
transducer means
focus ultrasonic
variable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1018877A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SRI International Inc
Original Assignee
SRI International Inc
Stanford Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SRI International Inc, Stanford Research Institute filed Critical SRI International Inc
Publication of GB1554349A publication Critical patent/GB1554349A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0625—Annular array
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Transducers For Ultrasonic Waves (AREA)
GB1018877A 1976-11-01 1977-03-10 Variable focus ultrasonic transducer means Expired GB1554349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73770476A 1976-11-01 1976-11-01

Publications (1)

Publication Number Publication Date
GB1554349A true GB1554349A (en) 1979-10-17

Family

ID=24964959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1018877A Expired GB1554349A (en) 1976-11-01 1977-03-10 Variable focus ultrasonic transducer means

Country Status (5)

Country Link
JP (1) JPS5357090A (en)
DE (1) DE2712341A1 (en)
FR (1) FR2369768A1 (en)
GB (1) GB1554349A (en)
NL (1) NL7712029A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104929A2 (en) * 1982-09-27 1984-04-04 Technicare Corporation Annular array ultrasonic transducers
GB2250658A (en) * 1990-12-07 1992-06-10 Canon Res Ct Europe Ltd Loudspeaker
DE102008028200A1 (en) 2008-06-12 2009-12-17 Forschungszentrum Karlsruhe Gmbh Ultrasonic transducer for use during e.g. weld testing, has transducer element with electrodes, where lever arms, force, reinforcing element, strip and layers produce and/or change bend or curvature on carrier plate in region of element

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391281A (en) * 1977-01-06 1983-07-05 Sri International Ultrasonic transducer system and method
US4227417A (en) * 1977-06-13 1980-10-14 New York Institute Of Technology Dynamic focusing apparatus and method
JPS5584154A (en) * 1978-12-19 1980-06-25 Matsushita Electric Ind Co Ltd Ultrasoniccwave diagnosis device
US4242911A (en) * 1979-02-01 1981-01-06 Mediscan, Inc. Ultrasonic medical diagnostic apparatus and method
US4414482A (en) * 1981-05-20 1983-11-08 Siemens Gammasonics, Inc. Non-resonant ultrasonic transducer array for a phased array imaging system using1/4 λ piezo elements
FR2523451A2 (en) * 1982-03-19 1983-09-23 Thomson Csf Ultrasonic heating appts. for treatment of deep biological tissue - has piezoelectric plate divided into annular radiation zones of equal width divided by grooves
EP0068961A3 (en) * 1981-06-26 1983-02-02 Thomson-Csf Apparatus for the local heating of biological tissue
USRE33590E (en) 1983-12-14 1991-05-21 Edap International, S.A. Method for examining, localizing and treating with ultrasound
US5143073A (en) 1983-12-14 1992-09-01 Edap International, S.A. Wave apparatus system
DE3441563A1 (en) * 1984-11-14 1985-05-30 Michael Dipl.-Phys. 5600 Wuppertal Platte Combined ultrasound transducer consisting of ceramic and highly polymerised piezoelectric materials
DE3510341C2 (en) * 1985-03-22 1987-03-19 Richard Wolf Gmbh, 7134 Knittlingen Sound transmitter for generating acoustic impulses
FR2580079A1 (en) * 1985-04-05 1986-10-10 Edap Ultrasonic echographic device incorporating a probe with adjustable focal length and means of obtaining a large depth of field with a high resolving power
DE3732131A1 (en) * 1987-09-24 1989-04-06 Wolf Gmbh Richard FOCUSING ULTRASONIC transducer
DE3833234C2 (en) * 1988-09-30 1995-03-16 Wolfgang Kessler Procedure for calibrating or testing a piezoceramic transducer
JPH02234600A (en) * 1989-03-07 1990-09-17 Mitsubishi Mining & Cement Co Ltd Piezoelectric conversion element
JP2745147B2 (en) * 1989-03-27 1998-04-28 三菱マテリアル 株式会社 Piezoelectric transducer
US5158085A (en) * 1989-09-29 1992-10-27 Richard Wolf Gmbh Lithotripsy ultrasound locating device
DE102008005971A1 (en) * 2008-01-24 2009-07-30 Ge Inspection Technologies Gmbh Apparatus and method for non-destructive testing of a test specimen by means of ultrasonic TOFD technique
DE102015209234A1 (en) * 2015-05-20 2016-11-24 Robert Bosch Gmbh Device for emitting and / or receiving acoustic signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474402A (en) * 1968-05-06 1969-10-21 Us Navy Variable focus electroacoustic transducer
AU483477B2 (en) * 1972-06-08 1977-05-18 Commonwealth Of Australia, The Wide aperture ultrasonic array
CA1201197A (en) * 1975-09-15 1986-02-25 Commonwealth Of Australia (The) Variable focus transducer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104929A2 (en) * 1982-09-27 1984-04-04 Technicare Corporation Annular array ultrasonic transducers
EP0104929A3 (en) * 1982-09-27 1985-08-28 Technicare Corporation Annular array ultrasonic transducers
GB2250658A (en) * 1990-12-07 1992-06-10 Canon Res Ct Europe Ltd Loudspeaker
DE102008028200A1 (en) 2008-06-12 2009-12-17 Forschungszentrum Karlsruhe Gmbh Ultrasonic transducer for use during e.g. weld testing, has transducer element with electrodes, where lever arms, force, reinforcing element, strip and layers produce and/or change bend or curvature on carrier plate in region of element
DE102008028200B4 (en) * 2008-06-12 2013-01-31 Karlsruher Institut für Technologie Ultrasonic transducer with variable focus adjustment

Also Published As

Publication number Publication date
NL7712029A (en) 1978-05-03
FR2369768A1 (en) 1978-05-26
JPS5357090A (en) 1978-05-24
DE2712341A1 (en) 1978-05-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee