EP0118837A3 - Ultrasonic transducer - Google Patents

Ultrasonic transducer Download PDF

Info

Publication number
EP0118837A3
EP0118837A3 EP84102147A EP84102147A EP0118837A3 EP 0118837 A3 EP0118837 A3 EP 0118837A3 EP 84102147 A EP84102147 A EP 84102147A EP 84102147 A EP84102147 A EP 84102147A EP 0118837 A3 EP0118837 A3 EP 0118837A3
Authority
EP
European Patent Office
Prior art keywords
layer
lambda
ultrasonic transducer
coupling layer
faces
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.)
Granted
Application number
EP84102147A
Other languages
German (de)
Other versions
EP0118837B1 (en
EP0118837A2 (en
Inventor
Reinhard Dr. Lerch
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT84102147T priority Critical patent/ATE35338T1/en
Publication of EP0118837A2 publication Critical patent/EP0118837A2/en
Publication of EP0118837A3 publication Critical patent/EP0118837A3/en
Application granted granted Critical
Publication of EP0118837B1 publication Critical patent/EP0118837B1/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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Abstract

1. An ultrasonic transducer having a supporting body (2), a transmitting layer (4) of a material with a relatively high dielectric constant and high acoustic impedance and a first lambda/4 coupling layer (8) that faces the transmitting layer (4), and a second lambda/4 coupling layer that faces a load, characterised in that the second lambda/4 coupling layer also serves as a receiving layer (6) and that the first lambda/4 coupling layer (8) also serves as backing for the receiving layer (6).
EP84102147A 1983-03-15 1984-02-29 Ultrasonic transducer Expired EP0118837B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102147T ATE35338T1 (en) 1983-03-15 1984-02-29 ULTRASONIC TRANSDUCER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3309236 1983-03-15
DE19833309236 DE3309236A1 (en) 1983-03-15 1983-03-15 ULTRASONIC CONVERTER

Publications (3)

Publication Number Publication Date
EP0118837A2 EP0118837A2 (en) 1984-09-19
EP0118837A3 true EP0118837A3 (en) 1985-05-15
EP0118837B1 EP0118837B1 (en) 1988-06-22

Family

ID=6193523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102147A Expired EP0118837B1 (en) 1983-03-15 1984-02-29 Ultrasonic transducer

Country Status (5)

Country Link
EP (1) EP0118837B1 (en)
JP (1) JPS59161800U (en)
AT (1) ATE35338T1 (en)
CA (1) CA1252558A (en)
DE (2) DE3309236A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422115A1 (en) * 1984-06-14 1985-12-19 Siemens AG, 1000 Berlin und 8000 München ULTRASONIC TRANSDUCER SYSTEM
DE3430186A1 (en) * 1984-08-16 1986-02-27 Siemens AG, 1000 Berlin und 8000 München METHOD FOR PRODUCING A POROUS PIEZOELECTRIC MATERIAL AND MATERIAL PRODUCED BY THIS METHOD
DE3501808A1 (en) * 1985-01-21 1986-07-24 Siemens AG, 1000 Berlin und 8000 München ULTRASONIC CONVERTER
DE3665949D1 (en) * 1985-08-09 1989-11-02 Siemens Ag Ultrasonic generator
DE3839057A1 (en) * 1988-11-18 1990-05-23 Fraunhofer Ges Forschung Array-type probe
DE3932959C1 (en) * 1989-10-03 1991-04-11 Richard Wolf Gmbh, 7134 Knittlingen, De
US5263004A (en) * 1990-04-11 1993-11-16 Hewlett-Packard Company Acoustic image acquisition using an acoustic receiving array with variable time delay
EP0451517B1 (en) * 1990-04-11 1996-05-01 Hewlett-Packard Company Acoustic image acquisition
DE19714606A1 (en) * 1997-04-09 1998-10-15 Itt Mfg Enterprises Inc Ultra sound transmitter and receiver for motor vehicle distance warning system
WO1999032858A1 (en) * 1997-12-23 1999-07-01 Simmonds Precision Products, Inc. Ultrasonic liquid gauging system
DE102007027277A1 (en) * 2007-06-11 2008-12-18 Endress + Hauser Flowtec Ag ultrasonic sensor
US20100256497A1 (en) * 2007-11-21 2010-10-07 Kenji Ohnuma Oscillator for ultrasonic wave reception, its manufacturing method, ultrasonic wave probe and ultrasonic wave medical diagnostic imaging system
EP2444166A1 (en) * 2009-09-15 2012-04-25 Fujifilm Corporation Ultrasonic transducer, ultrasonic probe and producing method
US11806749B2 (en) * 2021-10-28 2023-11-07 Baker Hughes, A Ge Company, Llc Ultrasonic transducer for flow measurement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016530A (en) * 1975-06-02 1977-04-05 Goll Jeffrey H Broadband electroacoustic converter
EP0021534A1 (en) * 1979-06-25 1981-01-07 Koninklijke Philips Electronics N.V. Acoustic transducer
US4427912A (en) * 1982-05-13 1984-01-24 Ausonics Pty. Ltd. Ultrasound transducer for enhancing signal reception in ultrasound equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57141199A (en) * 1981-02-25 1982-09-01 Aloka Co Ltd Ultrasonic wave probe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016530A (en) * 1975-06-02 1977-04-05 Goll Jeffrey H Broadband electroacoustic converter
EP0021534A1 (en) * 1979-06-25 1981-01-07 Koninklijke Philips Electronics N.V. Acoustic transducer
US4427912A (en) * 1982-05-13 1984-01-24 Ausonics Pty. Ltd. Ultrasound transducer for enhancing signal reception in ultrasound equipment

Also Published As

Publication number Publication date
ATE35338T1 (en) 1988-07-15
EP0118837B1 (en) 1988-06-22
JPS59161800U (en) 1984-10-30
JPH0453117Y2 (en) 1992-12-14
DE3472318D1 (en) 1988-07-28
EP0118837A2 (en) 1984-09-19
DE3309236A1 (en) 1984-09-20
CA1252558A (en) 1989-04-11

Similar Documents

Publication Publication Date Title
DE3472318D1 (en) Ultrasonic transducer
DE3476132D1 (en) Ultrasonic probe having dual-motion transducer
DE3478357D1 (en) Ultrasonic transducers having improved acoustic impedance matching layers
AU1959483A (en) Ultrasonic transducer
AU2409184A (en) Piezoelectric scanning for ultrasonic transducer
DE3061665D1 (en) Ultrasonic transducer
IL72791A0 (en) Ultrasound transducer
GB8413840D0 (en) Ultrasonic transducer and systems
EP0186096A3 (en) Polymeric piezoelectric ultrasonic probe
GB2104345B (en) An electroacoustic transducer of the piezoelectric polymer type
GB8501262D0 (en) Piezoelectric ultrasonic transducer
GB2168212B (en) Surface acoustic wave transducer
AU5546680A (en) Ultrasonic transducer
AU544464B2 (en) Ultrasonic transducer
GB2098828B (en) Ultrasonic transducer for single frequency applications
GB2137319B (en) An electro-pneumatic transducer
EP0308931A3 (en) Ultrasonic transducer with astigmatic transmission-reception characteristics
AU2165283A (en) Ultrasonic probe
IL75246A (en) Ultrasonic transducer arrangement
AU6178080A (en) Ultrasonic transducer
AU2726288A (en) An acoustic emission transducer and an electrical oscillator
AU4756285A (en) Ultrasonic compound scan with an oscillating transducer
GB2108797B (en) An impedance transducer
EP1170978A4 (en) Acoustic matching material, method of manufacture thereof, and ultrasonic transmitter using acoustic matching material
AU549252B2 (en) Ultrasonic diagnostic apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT DE FR GB

17P Request for examination filed

Effective date: 19850827

17Q First examination report despatched

Effective date: 19870422

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB

REF Corresponds to:

Ref document number: 35338

Country of ref document: AT

Date of ref document: 19880715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3472318

Country of ref document: DE

Date of ref document: 19880728

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890425

Year of fee payment: 6

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900131

Year of fee payment: 7

Ref country code: AT

Payment date: 19900131

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900226

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19901101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910228

Ref country code: AT

Effective date: 19910228

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19911031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST