JPS5640396A - High-polymer piezoelectric transducer - Google Patents

High-polymer piezoelectric transducer

Info

Publication number
JPS5640396A
JPS5640396A JP11589979A JP11589979A JPS5640396A JP S5640396 A JPS5640396 A JP S5640396A JP 11589979 A JP11589979 A JP 11589979A JP 11589979 A JP11589979 A JP 11589979A JP S5640396 A JPS5640396 A JP S5640396A
Authority
JP
Japan
Prior art keywords
polymer piezoelectric
electrodes
focus
piezoelectric transducer
electrode
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
JP11589979A
Other languages
Japanese (ja)
Inventor
Toshiharu Nakanishi
Koji Daito
Miyo Suzuki
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP11589979A priority Critical patent/JPS5640396A/en
Publication of JPS5640396A publication Critical patent/JPS5640396A/en
Pending 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To condense ultrasonic waves to the focus in case that all electrodes are driven by the in-phase voltage of the same frequency, by determining the difference of distances between centers of adjacent electrodes and the focus so that this difference may be the wave length of ultrasonic waves. CONSTITUTION:Support material 11, back electrode 12, high-polymer piezoelectric film 13, and surface electrode 14 are laminated to constitute a high-polymer piezoelectric transducer. One or both of back electrode 12 and surface electrode 14 are divided, and high-polymer piezoelectric film 13 corresponding to respective electrode parts of divided electrodes is driven electrically through respective electrodes, and therefore, transmitted acoustic waves emphasize one another to form a focus.
JP11589979A 1979-09-10 1979-09-10 High-polymer piezoelectric transducer Pending JPS5640396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11589979A JPS5640396A (en) 1979-09-10 1979-09-10 High-polymer piezoelectric transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11589979A JPS5640396A (en) 1979-09-10 1979-09-10 High-polymer piezoelectric transducer

Publications (1)

Publication Number Publication Date
JPS5640396A true JPS5640396A (en) 1981-04-16

Family

ID=14673951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11589979A Pending JPS5640396A (en) 1979-09-10 1979-09-10 High-polymer piezoelectric transducer

Country Status (1)

Country Link
JP (1) JPS5640396A (en)

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