EP0072288A3 - Electro-acoustic transducer with piezo-electric polymer - Google Patents

Electro-acoustic transducer with piezo-electric polymer Download PDF

Info

Publication number
EP0072288A3
EP0072288A3 EP82401393A EP82401393A EP0072288A3 EP 0072288 A3 EP0072288 A3 EP 0072288A3 EP 82401393 A EP82401393 A EP 82401393A EP 82401393 A EP82401393 A EP 82401393A EP 0072288 A3 EP0072288 A3 EP 0072288A3
Authority
EP
European Patent Office
Prior art keywords
piezo
electro
acoustic transducer
electric polymer
polymer
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
EP82401393A
Other languages
French (fr)
Other versions
EP0072288A2 (en
EP0072288B1 (en
Inventor
Pierre Ravinet
Christian Claudepierre
Denis Guillou
Francois Micheron
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0072288A2 publication Critical patent/EP0072288A2/en
Publication of EP0072288A3 publication Critical patent/EP0072288A3/en
Application granted granted Critical
Publication of EP0072288B1 publication Critical patent/EP0072288B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H04R17/025—Microphones using a piezoelectric polymer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
EP82401393A 1981-08-11 1982-07-27 Electro-acoustic transducer with piezo-electric polymer Expired EP0072288B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115506A FR2511570A1 (en) 1981-08-11 1981-08-11 ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC POLYMER
FR8115506 1981-08-11

Publications (3)

Publication Number Publication Date
EP0072288A2 EP0072288A2 (en) 1983-02-16
EP0072288A3 true EP0072288A3 (en) 1983-04-06
EP0072288B1 EP0072288B1 (en) 1986-12-30

Family

ID=9261361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401393A Expired EP0072288B1 (en) 1981-08-11 1982-07-27 Electro-acoustic transducer with piezo-electric polymer

Country Status (7)

Country Link
US (1) US4535205A (en)
EP (1) EP0072288B1 (en)
JP (1) JPS5840999A (en)
CA (1) CA1207429A (en)
DE (1) DE3274945D1 (en)
FR (1) FR2511570A1 (en)
GB (1) GB2104345B (en)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033093A (en) * 1990-01-17 1991-07-16 Peavey Electronics Corporation Compact microphone and method of manufacture
FR2542550B1 (en) * 1983-03-07 1986-11-14 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH INTEGRATED ACOUSTIC CORRECTION
FR2542552B1 (en) * 1983-03-07 1986-04-11 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM
FR2563959B1 (en) * 1984-05-04 1990-08-10 Lewiner Jacques IMPROVEMENTS ON ELECTRE-ACOUSTIC TRANSDUCERS WITH ELECTRET
US4789971A (en) * 1986-04-07 1988-12-06 The United States Of America As Represented By The Secretary Of The Navy Broadband, acoustically transparent, nonresonant PVDF hydrophone
JPS63131500U (en) * 1987-02-20 1988-08-29
US5125032A (en) * 1988-12-02 1992-06-23 Erwin Meister Talk/listen headset
DE58909381D1 (en) * 1989-02-10 1995-09-14 Siemens Ag Ultrasonic sensor.
US5005416A (en) * 1989-04-04 1991-04-09 The United States Of America As Represented By The Secretary Of Agriculture Insect detection using a pitfall probe trap having vibration detection
US4937555A (en) * 1989-04-04 1990-06-26 The United States Of America As Represented By The Secretary Of Agriculture Piezoelectric apparatus and process for detection of insect infestation in an agricultural commodity
GB8924393D0 (en) * 1989-10-30 1989-12-20 Marconi Co Ltd Transducer testing
DE9114727U1 (en) * 1991-11-27 1993-04-01 Werma Signalgeraete Gmbh, 7201 Rietheim-Weilheim, De
US5811680A (en) * 1993-06-13 1998-09-22 Technion Research & Development Foundation Ltd. Method and apparatus for testing the quality of fruit
US5889871A (en) * 1993-10-18 1999-03-30 The United States Of America As Represented By The Secretary Of The Navy Surface-laminated piezoelectric-film sound transducer
US6049158A (en) * 1994-02-14 2000-04-11 Ngk Insulators, Ltd. Piezoelectric/electrostrictive film element having convex diaphragm portions and method of producing the same
US5406161A (en) * 1994-05-24 1995-04-11 Industrial Technology Research Institute Piezoelectric composite receiver
FR2727215B1 (en) * 1994-11-18 1996-12-20 Thomson Csf STATIC INFRARED PANORAMIC SLEEP DEVICE WITH MULTIPLE MATRIX SENSORS
CA2187495A1 (en) * 1995-10-31 1997-05-01 Dan Charles Plitt Electronic component assembly and method fhereof
US6067363A (en) * 1996-06-03 2000-05-23 Ericsson Inc. Audio A/D convertor using frequency modulation
FR2750487B1 (en) * 1996-06-28 2005-10-21 Thomson Csf COATING FOR THE PERSONAL PROTECTION OF A FANTASSIN
US6140740A (en) * 1997-12-30 2000-10-31 Remon Medical Technologies, Ltd. Piezoelectric transducer
US6463157B1 (en) * 1998-10-06 2002-10-08 Analytical Engineering, Inc. Bone conduction speaker and microphone
US6347147B1 (en) * 1998-12-07 2002-02-12 The United States Of America As Represented By The Sceretary Of The Navy High noise suppression microphone
US6222928B1 (en) * 1999-05-10 2001-04-24 The United States Of America As Represented By The Secretary Of The Navy Universal impedance matcher for a microphone-to-radio connection
EP2264801B1 (en) * 1999-07-20 2012-10-03 SRI International Electroactive polymers
ATE381116T1 (en) * 1999-07-20 2007-12-15 Stanford Res Inst Int ELECTROACTIVE POLYMER GENERATORS
US20030059078A1 (en) * 2001-06-21 2003-03-27 Downs Edward F. Directional sensors for head-mounted contact microphones
US6937736B2 (en) * 2001-08-06 2005-08-30 Measurement Specialties, Inc. Acoustic sensor using curved piezoelectric film
FR2853968B1 (en) * 2003-04-17 2005-06-24 Geophysique Cie Gle DEVICE AND METHOD FOR MEASURING SEISMIC WAVES
SE526743C2 (en) * 2003-05-23 2005-11-01 Goeran Ehrlund Piezoelectric microphone
US7223243B2 (en) * 2003-11-14 2007-05-29 General Electric Co. Thin film ultrasonic transmitter/receiver
US8369555B2 (en) * 2006-10-27 2013-02-05 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Piezoelectric microphones
DE112010002028T5 (en) * 2009-05-18 2012-08-02 Knowles Electronics, Llc Microphone with reduced vibration sensitivity
US8447043B1 (en) 2009-11-06 2013-05-21 Charles Richard Abbruscato Piezo element stethoscope
US9185496B1 (en) 2009-11-06 2015-11-10 Charles Richard Abbruscato Piezo element stethoscope
US8320576B1 (en) 2009-11-06 2012-11-27 Charles Richard Abbruscato Piezo element stethoscope
KR20140005289A (en) 2011-02-15 2014-01-14 후지필름 디마틱스, 인크. Piezoelectric transducers using micro-dome arrays
US10001574B2 (en) 2015-02-24 2018-06-19 Amphenol (Maryland), Inc. Hermetically sealed hydrophones with very low acceleration sensitivity
CN105245984B (en) * 2015-10-26 2018-01-19 苏州登堡电子科技有限公司 Cylindrical contact formula microphone
US11051112B2 (en) * 2018-01-09 2021-06-29 Cirrus Logic, Inc. Multiple audio transducers driving a display to establish localized quiet zones

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714709A1 (en) * 1976-04-02 1977-10-06 Matsushita Electric Ind Co Ltd ELECTROACOUSTIC CONVERTER WITH A HIGHLY POLYMERIC PIEZOELECTRIC MEMBRANE
US4056742A (en) * 1976-04-30 1977-11-01 Tibbetts Industries, Inc. Transducer having piezoelectric film arranged with alternating curvatures
US4064375A (en) * 1975-08-11 1977-12-20 The Rank Organisation Limited Vacuum stressed polymer film piezoelectric transducer
EP0032082A2 (en) * 1980-01-08 1981-07-15 Thomson-Csf Electro acoustic transducer with active dome

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975182A (en) * 1972-11-20 1974-07-19
JPS5215972B2 (en) * 1974-02-28 1977-05-06
US4045695A (en) * 1974-07-15 1977-08-30 Pioneer Electronic Corporation Piezoelectric electro-acoustic transducer
FR2460485A1 (en) * 1979-06-29 1981-01-23 Thomson Csf PIEZOELECTRIC ACCELERATION SENSOR WITH TRANSDUCER ELEMENT IN POLYMERIC MATERIAL AND SECURITY SYSTEM FOR A CENTRIFUGE PROVIDED WITH SUCH A SENSOR
FR2477822A1 (en) * 1980-03-04 1981-09-11 Thomson Csf ACTIVE SUSPENSION ELECTROMECHANICAL TRANSDUCER AND METHOD FOR MANUFACTURING THE SAME

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064375A (en) * 1975-08-11 1977-12-20 The Rank Organisation Limited Vacuum stressed polymer film piezoelectric transducer
DE2714709A1 (en) * 1976-04-02 1977-10-06 Matsushita Electric Ind Co Ltd ELECTROACOUSTIC CONVERTER WITH A HIGHLY POLYMERIC PIEZOELECTRIC MEMBRANE
US4056742A (en) * 1976-04-30 1977-11-01 Tibbetts Industries, Inc. Transducer having piezoelectric film arranged with alternating curvatures
EP0032082A2 (en) * 1980-01-08 1981-07-15 Thomson-Csf Electro acoustic transducer with active dome

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS, vol. 11, no. 22, 30 octobre 1975, pages 532-533, Londres (GB); *
JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 15, no. 11, 1976, pages 2239,2240, Tokyo (JP); *

Also Published As

Publication number Publication date
CA1207429A (en) 1986-07-08
JPS5840999A (en) 1983-03-10
EP0072288A2 (en) 1983-02-16
FR2511570A1 (en) 1983-02-18
US4535205A (en) 1985-08-13
DE3274945D1 (en) 1987-02-05
EP0072288B1 (en) 1986-12-30
GB2104345B (en) 1985-06-19
FR2511570B1 (en) 1985-05-03
GB2104345A (en) 1983-03-02

Similar Documents

Publication Publication Date Title
DE3274945D1 (en) Electro-acoustic transducer with piezo-electric polymer
SG64388G (en) Electro-acoustic transducers
DE3062506D1 (en) An improved electro-acoustic transducer element
DE3364454D1 (en) Electroacoustic transducer
GB8314336D0 (en) Electroacoustic transducer
GB2153629B (en) Electroacoustic transducer
GB2164226B (en) Electroacoustic transducer
GB2081052B (en) An electroacoustic transducer assembly
US4473722B1 (en) Electroacoustic transducers
GB2206232B (en) Piezoelectric polymer transducers
DE3377888D1 (en) Electro-acoustic transducer with diaphragm
GB8411493D0 (en) Electro-acoustic transducer
AU5637080A (en) Electro-acoustic transducer element
GB2067378B (en) Electro-acoustic transducers
GB2144308B (en) Electro-acoustic transducer element
DE3269415D1 (en) Electroacoustic transducer
GB2104283B (en) Piezoelectric transducer
ZA811320B (en) Electro-acoustic transducer arrangements
GB2096860B (en) Piezoelectric sound transducer
AU8090882A (en) Electroacoustic transducers
DE3162963D1 (en) Electroacoustic transducers
GB2071961B (en) Electro-acoustic transducer
HK76087A (en) Electro-acoustic transducers
GB2153627B (en) Piezoelectric electroacoustic transducer
GB2078958B (en) Sonar transducer mountings

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE IT NL SE

AK Designated contracting states

Designated state(s): DE IT NL SE

17P Request for examination filed

Effective date: 19830416

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE IT NL SE

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REF Corresponds to:

Ref document number: 3274945

Country of ref document: DE

Date of ref document: 19870205

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

Ref country code: NL

Payment date: 19870731

Year of fee payment: 6

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

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19880728

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

Ref country code: NL

Effective date: 19890201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890401

EUG Se: european patent has lapsed

Ref document number: 82401393.2

Effective date: 19890510