CA1201197A - Variable focus transducer - Google Patents

Variable focus transducer

Info

Publication number
CA1201197A
CA1201197A CA000260604A CA260604A CA1201197A CA 1201197 A CA1201197 A CA 1201197A CA 000260604 A CA000260604 A CA 000260604A CA 260604 A CA260604 A CA 260604A CA 1201197 A CA1201197 A CA 1201197A
Authority
CA
Canada
Prior art keywords
transducer
array
focus
elements
varying
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
CA000260604A
Other languages
English (en)
French (fr)
Inventor
George Kossoff
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.)
Australian Government
Original Assignee
Australian Government
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 Australian Government filed Critical Australian Government
Application granted granted Critical
Publication of CA1201197A publication Critical patent/CA1201197A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Clinical applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G01N29/0609—Display arrangements, e.g. colour displays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52046—Techniques for image enhancement involving transmitter or receiver
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Remote Sensing (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
CA000260604A 1975-09-15 1976-09-07 Variable focus transducer Expired CA1201197A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPC3151 1975-09-15
AUPC315175 1975-09-15

Publications (1)

Publication Number Publication Date
CA1201197A true CA1201197A (en) 1986-02-25

Family

ID=3766362

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000260604A Expired CA1201197A (en) 1975-09-15 1976-09-07 Variable focus transducer

Country Status (6)

Country Link
JP (1) JPS5256781A (enrdf_load_stackoverflow)
AT (1) AT378115B (enrdf_load_stackoverflow)
CA (1) CA1201197A (enrdf_load_stackoverflow)
DE (1) DE2641265A1 (enrdf_load_stackoverflow)
FR (1) FR2324004A1 (enrdf_load_stackoverflow)
GB (1) GB1514050A (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1554349A (en) * 1976-11-01 1979-10-17 Stanford Res Inst Int Variable focus ultrasonic transducer means
JPS58333B2 (ja) * 1977-08-22 1983-01-06 アロカ株式会社 超音波診断装置
JPS595298B2 (ja) * 1977-09-02 1984-02-03 株式会社日立メディコ 超音波撮像装置
GB2036317B (en) * 1977-12-12 1982-07-21 Rca Corp Acoustic variable focal length lens assembly
US4155258A (en) * 1978-05-24 1979-05-22 General Electric Company Ultrasonic imaging system
US4155259A (en) * 1978-05-24 1979-05-22 General Electric Company Ultrasonic imaging system
US4241610A (en) * 1979-02-05 1980-12-30 Varian Associates, Inc. Ultrasonic imaging system utilizing dynamic and pseudo-dynamic focusing
JPS5672857A (en) * 1979-11-16 1981-06-17 Matsushita Electric Ind Co Ltd Method of scanning ultrasonic diagnosing device
JPS58133240A (ja) * 1982-02-01 1983-08-08 株式会社東芝 超音波診断装置
US4442713A (en) * 1982-03-09 1984-04-17 Sri International Frequency varied ultrasonic imaging array
FR2592720B1 (fr) * 1986-01-03 1988-08-05 Peugeot & Renault Appareil d'examen de milieux par echographie ultrasonore
JPH01153145A (ja) * 1987-12-11 1989-06-15 Toshiba Corp アニュラアレイ超音波探触子
JPH02159266A (ja) * 1988-12-14 1990-06-19 Matsushita Electric Ind Co Ltd 超音波探触子
FR2773459B1 (fr) * 1998-01-12 2000-04-14 Centre Nat Rech Scient Procede d'exploration et de visualisation de tissus d'origine humaine ou animale a partir d'une sonde ultrasonore a haute frequence
CN104359980B (zh) * 2014-11-24 2017-01-04 清华大学 一种锯齿形柱状超声相控阵换能器
JP7145799B2 (ja) * 2019-03-19 2022-10-03 株式会社東芝 超音波検査装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR876822A (fr) * 1940-11-18 1942-11-18 Atlas Werke Ag Dispositif pour la production de champs sonores convergents
GB941573A (en) * 1959-11-06 1963-11-13 Kelvin & Hughes Ltd Improvements in flaw detection and like systems using pulsed sonic or ultrasonic waves
DE2202989A1 (de) * 1972-01-21 1973-07-26 Siemens Ag Fokussierter ultraschallwandler
AU483477B2 (en) * 1972-06-08 1977-05-18 Commonwealth Of Australia, The Wide aperture ultrasonic array
DE2345155B2 (de) * 1973-09-07 1975-09-25 Krautkraemer Gmbh, 5000 Koeln Gruppenweise umgetastete, aus zellenförmig und/oder hierzu senkrechten, streifenförmig angeordneten einzelnen Schwingerelementen bestehendes Ultraschall-Prüfkopfsystem zur zerstörungsfreien Werkstoffprüfung

Also Published As

Publication number Publication date
JPS5256781A (en) 1977-05-10
FR2324004B1 (enrdf_load_stackoverflow) 1982-01-08
FR2324004A1 (fr) 1977-04-08
DE2641265A1 (de) 1977-03-17
AT378115B (de) 1985-06-25
ATA679076A (de) 1984-11-15
GB1514050A (en) 1978-06-14
JPS6148947B2 (enrdf_load_stackoverflow) 1986-10-27

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Legal Events

Date Code Title Description
MKEX Expiry