[go: up one dir, main page]

JPS55115799A - Macromolecular piezoelectric film transducer of multiplex constitution - Google Patents

Macromolecular piezoelectric film transducer of multiplex constitution

Info

Publication number
JPS55115799A
JPS55115799A JP2311079A JP2311079A JPS55115799A JP S55115799 A JPS55115799 A JP S55115799A JP 2311079 A JP2311079 A JP 2311079A JP 2311079 A JP2311079 A JP 2311079A JP S55115799 A JPS55115799 A JP S55115799A
Authority
JP
Japan
Prior art keywords
conversion elements
conversion element
constitution
piezoelectric film
multiplex
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.)
Pending
Application number
JP2311079A
Other languages
Japanese (ja)
Inventor
Noritoshi Nakabachi
Tsunemasa Mita
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.)
Kureha Corp
Original Assignee
Kureha Corp
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 Kureha Corp filed Critical Kureha Corp
Priority to JP2311079A priority Critical patent/JPS55115799A/en
Publication of JPS55115799A publication Critical patent/JPS55115799A/en
Pending 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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Landscapes

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

Abstract

PURPOSE:To obtain high sensitivity over a wide band, by multiplex construction alternately inverting orientation polarization of a plurality of curved type conversion elements laminated. CONSTITUTION:The orientation polarization of a plurality of curved type conversion elements 1a...1n is alternately inverted and they are laminated so that each coversion element can be excited independent oscillation mode. The front and back electrodes of each piezoelectric film are connected parallelly for in-phase excitation acoustically and the electric terminals 6, 6' for input and output are provided. The distances 7a...7n-1 of each conversion element are taken sufficiently shorter than the wave length, and thus, the acoustic waves independently radiated from each conversion element are superimposed at the sound reception point sufficiently apart from the transducer. Accordingly, the increase in the output sound pressure proportional to the number of conversion elements to the same input voltage can be obtained. Further, to obtain sufficient effect of superposition, the total thickness 8 laminating each conversion element is suppressed 1/10 or less to the wave length of sound pressure objective. With this counstruction, high sensitivity can be obtained over a wide band from the audible zone to low ultrasonic waves.
JP2311079A 1979-02-28 1979-02-28 Macromolecular piezoelectric film transducer of multiplex constitution Pending JPS55115799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2311079A JPS55115799A (en) 1979-02-28 1979-02-28 Macromolecular piezoelectric film transducer of multiplex constitution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2311079A JPS55115799A (en) 1979-02-28 1979-02-28 Macromolecular piezoelectric film transducer of multiplex constitution

Publications (1)

Publication Number Publication Date
JPS55115799A true JPS55115799A (en) 1980-09-05

Family

ID=12101325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2311079A Pending JPS55115799A (en) 1979-02-28 1979-02-28 Macromolecular piezoelectric film transducer of multiplex constitution

Country Status (1)

Country Link
JP (1) JPS55115799A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162591A (en) * 1981-03-30 1982-10-06 Yokogawa Hokushin Electric Corp Ultrasonic wave transducer
JPS5920799U (en) * 1982-07-27 1984-02-08 澤藤　正 Piezoelectric film laminated speaker
US4725994A (en) * 1984-06-14 1988-02-16 Kabushiki Kaisha Toshiba Ultrasonic transducer with a multiple-folded piezoelectric polymer film
JP2011528546A (en) * 2008-07-18 2011-11-17 エージェンシー フォー ディフェンス デベロップメント Electromechanical transducer and manufacturing method thereof
JP2012029110A (en) * 2010-07-23 2012-02-09 Nec Corp Oscillation device
US20120281281A1 (en) * 2011-05-03 2012-11-08 Roberto Gutierrez Polarized film apparatus with bands of alternating orientation
JP2014212552A (en) * 2014-06-24 2014-11-13 国立大学法人九州工業大学 Speaker
JP2015181303A (en) * 2012-02-28 2015-10-15 京セラ株式会社 Piezoelectric vibration element, piezoelectric vibration device, and portable terminal
WO2017069057A1 (en) * 2015-10-22 2017-04-27 富士フイルム株式会社 Electro-acoustic transducer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162591A (en) * 1981-03-30 1982-10-06 Yokogawa Hokushin Electric Corp Ultrasonic wave transducer
JPS6313640B2 (en) * 1981-03-30 1988-03-26 Yokokawa Denki Kk
JPS5920799U (en) * 1982-07-27 1984-02-08 澤藤　正 Piezoelectric film laminated speaker
US4725994A (en) * 1984-06-14 1988-02-16 Kabushiki Kaisha Toshiba Ultrasonic transducer with a multiple-folded piezoelectric polymer film
JP2011528546A (en) * 2008-07-18 2011-11-17 エージェンシー フォー ディフェンス デベロップメント Electromechanical transducer and manufacturing method thereof
JP2012029110A (en) * 2010-07-23 2012-02-09 Nec Corp Oscillation device
US20120281281A1 (en) * 2011-05-03 2012-11-08 Roberto Gutierrez Polarized film apparatus with bands of alternating orientation
US8711481B2 (en) * 2011-05-03 2014-04-29 Inicia Ip Holdings, Llc Polarized film apparatus with bands of alternating orientation
JP2015181303A (en) * 2012-02-28 2015-10-15 京セラ株式会社 Piezoelectric vibration element, piezoelectric vibration device, and portable terminal
JP2014212552A (en) * 2014-06-24 2014-11-13 国立大学法人九州工業大学 Speaker
WO2017069057A1 (en) * 2015-10-22 2017-04-27 富士フイルム株式会社 Electro-acoustic transducer
JPWO2017069057A1 (en) * 2015-10-22 2018-09-06 富士フイルム株式会社 Electroacoustic transducer
US10567884B2 (en) 2015-10-22 2020-02-18 Fujifilm Corporation Electroacoustic transducer

Similar Documents

Publication Publication Date Title
JPS57161672A (en) Measuring method utilizing ultrasonic wave
JPS63111619U (en)
JPS55115799A (en) Macromolecular piezoelectric film transducer of multiplex constitution
JPS568914A (en) Low-frequency dispersed type delay line
US4160230A (en) Acoustic antenna
JPH07118838B2 (en) Transceiver
JPS55115800A (en) Macromolecular piezoelectric film ultrasonic wave transducer of constitution in many number of arrangement
JPS60236312A (en) Unidirectional surface acoustic wave converter of floating electrode internal reflection type
JPS616916A (en) Internal reflection type unidirectional surface acoustic wave converter having floating electrode
JPS5773514A (en) Surface acoustic wave filter
JPS5863300A (en) Multifrequency oscillator
JPS5686598A (en) Manufacture for ultrasonic wave transducer
JPS55151893A (en) Ultrasonic transducer using high molecular piezoelectric film
JPS55151810A (en) Elastic surface wave filter
GB1104676A (en) Acoustic coupling
SU647636A1 (en) Electronic wristwatch
JPS5640396A (en) High-polymer piezoelectric transducer
SU539265A1 (en) Ultrasonic transducer
SU547975A1 (en) Piezoelectric transducer
JPS6313497A (en) Underwater wide band frequency transmitter/receiver
JPH0750079B2 (en) Moisture sensor
JPS6359319B2 (en)
JPS5773592A (en) Ultrasonic wave probe and its production
RU18655U1 (en) ULTRASONIC PIEZO-CERAMIC RADIATOR
JPS55156500A (en) Electro-acoustic converting element