JPS57208799A - Polarization distributing type ultrasonic wave converter - Google Patents

Polarization distributing type ultrasonic wave converter

Info

Publication number
JPS57208799A
JPS57208799A JP56094343A JP9434381A JPS57208799A JP S57208799 A JPS57208799 A JP S57208799A JP 56094343 A JP56094343 A JP 56094343A JP 9434381 A JP9434381 A JP 9434381A JP S57208799 A JPS57208799 A JP S57208799A
Authority
JP
Japan
Prior art keywords
electrodes
reed screen
polarization
ultrasonic wave
type ultrasonic
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
JP56094343A
Other languages
Japanese (ja)
Inventor
Kazuhiko Yamanouchi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP56094343A priority Critical patent/JPS57208799A/en
Publication of JPS57208799A publication Critical patent/JPS57208799A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/04—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning
    • H10N30/045—Treatments to modify a piezoelectric or electrostrictive property, e.g. polarisation characteristics, vibration characteristics or mode tuning by polarising
    • 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
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To reduce the spurious mode, through increased electro-mechanical coupling coefficient, by forming a reed screen type electrodes with changed position of the electrodes, after permanent polarization using the reed screen type electrodes for a piezoelectric, and electrostrictive type ferrodielectric substance. CONSTITUTION:Reed screen electrodes 2 are formed on the surface of a ferrodielectric substance 1 not polarized or uniformly polarized, with evaporation, and the like. Next, positive and negative DC voltages are applied to the reed screen electrodes at a suitable temperature to form permanent polarization in the ferrodielectric substance 1 with a positive and negative volage electrodes 3 and 4. Further, the reed screen electrodes used for the polarization are removed and the position of the electrodes is changed newly, to form the reed screen electrodes for oscillation or reception.
JP56094343A 1981-06-17 1981-06-17 Polarization distributing type ultrasonic wave converter Pending JPS57208799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56094343A JPS57208799A (en) 1981-06-17 1981-06-17 Polarization distributing type ultrasonic wave converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56094343A JPS57208799A (en) 1981-06-17 1981-06-17 Polarization distributing type ultrasonic wave converter

Publications (1)

Publication Number Publication Date
JPS57208799A true JPS57208799A (en) 1982-12-21

Family

ID=14107636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56094343A Pending JPS57208799A (en) 1981-06-17 1981-06-17 Polarization distributing type ultrasonic wave converter

Country Status (1)

Country Link
JP (1) JPS57208799A (en)

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