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    ULTRASONIC TRANSDUCER AND METHOD FOR MANUFACTURING SAME

    New search for: KORESAWA KENJI
    New search for: SUZUKI YUSUKE
    New search for: NOMURA JUNICHI
    New search for: MATSUSHITA TOMOAKI
    New search for: FUJITA AKIO
    New search for: FUJII KAZUHIKO

    A case (120), a piezoelectric vibrator (110), and a wire (130, 140) are provided. The case (120) has a bottomed cylindrical shape, the case having a bottom portion and a side wall portion. The piezoelectric vibrator (110) has piezoelectric ceramic containing Ti and Zr, and is attached to the bottom portion inside the case (120). The wire (130, 140) is connected to the piezoelectric vibrator (110) and disposed to extend to an outside of the case (120). A resonance frequency in a spreading vibration mode of the piezoelectric ceramic not attached to the bottom portion becomes minimum at a temperature in a range of -30°C or higher and 10°C or lower. A cross-sectional porosity in any longitudinal cross section of the piezoelectric ceramic is 1% or less.

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    ULTRASONIC TRANSDUCER AND METHOD FOR MANUFACTURING SAME

    New search for: KORESAWA KENJI
    New search for: SUZUKI YUSUKE
    New search for: NOMURA JUNICHI
    New search for: MATSUSHITA TOMOAKI
    New search for: FUJITA AKIO
    New search for: FUJII KAZUHIKO

    A case (120), a piezoelectric vibrator (110), and a wire (130, 140) are provided. The case (120) has a bottomed cylindrical shape, the case having a bottom portion and a side wall portion. The piezoelectric vibrator (110) has piezoelectric ceramic containing Ti and Zr, and is attached to the bottom portion inside the case (120). The wire (130, 140) is connected to the piezoelectric vibrator (110) and disposed to extend to an outside of the case (120). A resonance frequency in a spreading vibration mode of the piezoelectric ceramic not attached to the bottom portion becomes minimum at a temperature in a range of -30°C or higher and 10°C or lower. A cross-sectional porosity in any longitudinal cross section of the piezoelectric ceramic is 1% or less.

    Access

    Download

    ULTRASONIC TRANSDUCER AND METHOD FOR MANUFACTURING SAME

    New search for: KORESAWA KENJI
    New search for: SUZUKI YUSUKE
    New search for: NOMURA JUNICHI
    New search for: MATSUSHITA TOMOAKI
    New search for: FUJITA AKIO
    New search for: FUJII KAZUHIKO

    A case (120), a piezoelectric vibrator (110), and a wire (130, 140) are provided. The case (120) has a bottomed cylindrical shape, the case having a bottom portion and a side wall portion. The piezoelectric vibrator (110) has piezoelectric ceramic containing Ti and Zr, and is attached to the bottom portion inside the case (120). The wire (130, 140) is connected to the piezoelectric vibrator (110) and disposed to extend to an outside of the case (120). A resonance frequency in a spreading vibration mode of the piezoelectric ceramic not attached to the bottom portion becomes minimum at a temperature in a range of -30°C or higher and 10°C or lower. A cross-sectional porosity in any longitudinal cross section of the piezoelectric ceramic is 1% or less.

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    Title:

    ULTRASONIC TRANSDUCER AND METHOD FOR MANUFACTURING SAME

    Additional title:

    ULTRASCHALLWANDLER UND VERFAHREN ZUR HERSTELLUNG DAVON
    TRANSDUCTEUR ULTRASONORE ET PROCÉDÉ DE FABRICATION CORRESPONDANT

    Contributors:

    KORESAWA KENJI (author) / SUZUKI YUSUKE (author) / NOMURA JUNICHI (author) / MATSUSHITA TOMOAKI (author) / FUJITA AKIO (author) / FUJII KAZUHIKO (author)

    Publication date:

    2024-10-09

    Type of media:

    Patent

    Type of material:

    Electronic Resource

    Language:

    English

    Classification:

    IPC:  H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / C04B Kalk , LIME / H10N

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