JPS5640397A - Variable focus type ultrasonic transducer using high- polymer piezoelectric film - Google Patents

Variable focus type ultrasonic transducer using high- polymer piezoelectric film

Info

Publication number
JPS5640397A
JPS5640397A JP11714279A JP11714279A JPS5640397A JP S5640397 A JPS5640397 A JP S5640397A JP 11714279 A JP11714279 A JP 11714279A JP 11714279 A JP11714279 A JP 11714279A JP S5640397 A JPS5640397 A JP S5640397A
Authority
JP
Japan
Prior art keywords
piezoelectric film
polymer piezoelectric
ultrasonic transducer
electrode
variable focus
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
JP11714279A
Other languages
Japanese (ja)
Inventor
Toshiharu Nakanishi
Miyo Suzuki
Koji Daito
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 JP11714279A priority Critical patent/JPS5640397A/en
Publication of JPS5640397A publication Critical patent/JPS5640397A/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

Landscapes

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

Abstract

PURPOSE:To facilitate production considerably and condense ultrasonic waves accurately with a high precision, by forming the surface electrode or the back electrode divisionally and by using a high-polymer piezoelectric material. CONSTITUTION:The ultrasonic transducer consisting of support material 7, back electrode 8, high-polymer piezoelectric film 9, and surface electrode 10 is formed into a plate form, and one of back electrode 8 and surface electrode 10 at least is divided. Piezoelectric film 9 is driven at a time or driven by a prescribed phase or phase difference by this divided electrode, thereby condensing acoustic waves and scanning in the linear system or the sector system.
JP11714279A 1979-09-12 1979-09-12 Variable focus type ultrasonic transducer using high- polymer piezoelectric film Pending JPS5640397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11714279A JPS5640397A (en) 1979-09-12 1979-09-12 Variable focus type ultrasonic transducer using high- polymer piezoelectric film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11714279A JPS5640397A (en) 1979-09-12 1979-09-12 Variable focus type ultrasonic transducer using high- polymer piezoelectric film

Publications (1)

Publication Number Publication Date
JPS5640397A true JPS5640397A (en) 1981-04-16

Family

ID=14704490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11714279A Pending JPS5640397A (en) 1979-09-12 1979-09-12 Variable focus type ultrasonic transducer using high- polymer piezoelectric film

Country Status (1)

Country Link
JP (1) JPS5640397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133873U (en) * 1985-02-07 1986-08-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133873U (en) * 1985-02-07 1986-08-21
JPH0319014Y2 (en) * 1985-02-07 1991-04-22

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