EP0085997A3 - Transducteur acoustique - Google Patents

Transducteur acoustique Download PDF

Info

Publication number
EP0085997A3
EP0085997A3 EP83200058A EP83200058A EP0085997A3 EP 0085997 A3 EP0085997 A3 EP 0085997A3 EP 83200058 A EP83200058 A EP 83200058A EP 83200058 A EP83200058 A EP 83200058A EP 0085997 A3 EP0085997 A3 EP 0085997A3
Authority
EP
European Patent Office
Prior art keywords
films
metallized
piezoelectric
signal
acoustic transducer
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.)
Withdrawn
Application number
EP83200058A
Other languages
German (de)
English (en)
Other versions
EP0085997A2 (fr
Inventor
Preston Vincent Murphy
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.)
Lectret SA
Original Assignee
Lectret 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 Lectret SA filed Critical Lectret SA
Publication of EP0085997A2 publication Critical patent/EP0085997A2/fr
Publication of EP0085997A3 publication Critical patent/EP0085997A3/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S310/00—Electrical generator or motor structure
    • Y10S310/80—Piezoelectric polymers, e.g. PVDF

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un transducteur acoustique com­ prenant une pluralité de films piézoélectriques. Deux films piézoélectriques métallisés (14,16) fonctionnant en oscilla­ teur sont montés à leur périphérie sur un support creux et reliés physiquement à proximité de leur centre par de la colle epoxy (18) ou par fusion thermique. L'une des faces d'un des films (16) est métallisée en zones (6,7,8) isolées électrique­ ment. Chaque zone (6,7,8) ou surface de film (9) est reliée à une ligne (1,2,3,4,5) transmettant un bit de poids différent composant un mot binaire d'un signal numérique électrique. Ce dispositif permet la conversion directe d'un signal numérique électrique en un signal sonore analogique. Un tel transducteur peut être utilisé dans un système informatique ou de télécommunication.
EP83200058A 1982-02-09 1983-01-14 Transducteur acoustique Withdrawn EP0085997A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8202531A FR2521382A2 (fr) 1982-02-09 1982-02-09 Transducteur acoustique
FR8202531 1982-02-09

Publications (2)

Publication Number Publication Date
EP0085997A2 EP0085997A2 (fr) 1983-08-17
EP0085997A3 true EP0085997A3 (fr) 1984-07-18

Family

ID=9271033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200058A Withdrawn EP0085997A3 (fr) 1982-02-09 1983-01-14 Transducteur acoustique

Country Status (4)

Country Link
US (1) US4469920A (fr)
EP (1) EP0085997A3 (fr)
JP (1) JPS58143698A (fr)
FR (1) FR2521382A2 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437488A1 (de) * 1984-10-12 1986-04-17 Richard Wolf Gmbh, 7134 Knittlingen Schallsender
US4833360A (en) * 1987-05-15 1989-05-23 Board Of Regents The University Of Texas System Sonar system using acoustically transparent continuous aperture transducers for multiple beam beamformation
US5185549A (en) * 1988-12-21 1993-02-09 Steven L. Sullivan Dipole horn piezoelectric electro-acoustic transducer design
WO1991010334A1 (fr) * 1990-01-03 1991-07-11 David Sarnoff Research Center, Inc. Transducteur acoustique et procede de fabrication
JP3377173B2 (ja) * 1998-02-16 2003-02-17 松下電器産業株式会社 ディジタル式電気音響変換器
US7915789B2 (en) * 2005-03-21 2011-03-29 Bayer Materialscience Ag Electroactive polymer actuated lighting
US7952261B2 (en) 2007-06-29 2011-05-31 Bayer Materialscience Ag Electroactive polymer transducers for sensory feedback applications
EP2239793A1 (fr) 2009-04-11 2010-10-13 Bayer MaterialScience AG Montage de film polymère électrique commutable et son utilisation
WO2012118916A2 (fr) 2011-03-01 2012-09-07 Bayer Materialscience Ag Procédés de fabrication automatisés pour la production de dispositifs et de films polymères déformables
JP2014517331A (ja) 2011-03-22 2014-07-17 バイエル・インテレクチュアル・プロパティ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 電場応答性高分子アクチュエータレンチキュラシステム
US9876160B2 (en) 2012-03-21 2018-01-23 Parker-Hannifin Corporation Roll-to-roll manufacturing processes for producing self-healing electroactive polymer devices
KR20150031285A (ko) 2012-06-18 2015-03-23 바이엘 인텔렉쳐 프로퍼티 게엠베하 연신 공정을 위한 연신 프레임
US9590193B2 (en) 2012-10-24 2017-03-07 Parker-Hannifin Corporation Polymer diode
TWI595789B (zh) * 2016-02-16 2017-08-11 智動全球股份有限公司 電聲轉換器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH539845A (de) * 1972-06-30 1973-07-31 Ibm Elektroakustischer Wandler
US4242541A (en) * 1977-12-22 1980-12-30 Olympus Optical Co., Ltd. Composite type acoustic transducer
FR2476957A1 (fr) * 1980-02-22 1981-08-28 Lectret Sa Transducteur acoustique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1967130C2 (de) * 1968-01-25 1982-04-01 Pioneer Electronic Corp., Tokyo Mechanisch-elektrisch bzw. elektrisch-mechanischer Wandler
JPS4926890B1 (fr) * 1970-12-04 1974-07-12

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH539845A (de) * 1972-06-30 1973-07-31 Ibm Elektroakustischer Wandler
US4242541A (en) * 1977-12-22 1980-12-30 Olympus Optical Co., Ltd. Composite type acoustic transducer
FR2476957A1 (fr) * 1980-02-22 1981-08-28 Lectret Sa Transducteur acoustique

Also Published As

Publication number Publication date
JPS58143698A (ja) 1983-08-26
FR2521382A2 (fr) 1983-08-12
US4469920A (en) 1984-09-04
EP0085997A2 (fr) 1983-08-17

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Legal Events

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

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PUAL Search report despatched

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Effective date: 19850319

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MURPHY, PRESTON VINCENT