WO2005104210A3 - Arrayed ultrasonic transducer - Google Patents

Arrayed ultrasonic transducer Download PDF

Info

Publication number
WO2005104210A3
WO2005104210A3 PCT/US2005/013473 US2005013473W WO2005104210A3 WO 2005104210 A3 WO2005104210 A3 WO 2005104210A3 US 2005013473 W US2005013473 W US 2005013473W WO 2005104210 A3 WO2005104210 A3 WO 2005104210A3
Authority
WO
WIPO (PCT)
Prior art keywords
stack
face
predetermined length
axis
substantially parallel
Prior art date
Application number
PCT/US2005/013473
Other languages
French (fr)
Other versions
WO2005104210A2 (en
Inventor
Marc Lukacs
Stuart F Foster
Original Assignee
Visualsonics Inc
Sunnybrook & Womens College
Marc Lukacs
Stuart F Foster
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 Visualsonics Inc, Sunnybrook & Womens College, Marc Lukacs, Stuart F Foster filed Critical Visualsonics Inc
Priority to CN2005800204188A priority Critical patent/CN1998095B/en
Priority to CA2563775A priority patent/CA2563775C/en
Priority to EP05744412.7A priority patent/EP1738407B1/en
Priority to JP2007509599A priority patent/JP4805254B2/en
Publication of WO2005104210A2 publication Critical patent/WO2005104210A2/en
Publication of WO2005104210A3 publication Critical patent/WO2005104210A3/en
Priority to HK07105608.6A priority patent/HK1098252A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface

Abstract

An ultrasonic transducer comprises a stack having a first face, an opposed second face and a longitudinal axis extending therebetween. The stack comprises a plurality of layers, each layer having a top surface and an opposed bottom surface, wherein the plurality of layers of the stack comprises a piezoelectric layer and a dielectric layer. The dielectric layer is connected to the piezoelectric layer and defines an opening extending a second predetermined length in a direction substantially parallel to the axis of the stack. A plurality of first kerf slots are defined therein the stack, each first kerf slot extending a predetermined depth therein the stack and a first predetermined length in a direction substantially parallel to the axis. The first predetermined length of each first kerf slot is at least as long as the second predetermined length of the opening defined by the dielectric layer and is shorter than the longitudinal distance between the first face and the opposed second face of the stack in a lengthwise direction substantially parallel to the axis.
PCT/US2005/013473 2004-04-20 2005-04-20 Arrayed ultrasonic transducer WO2005104210A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2005800204188A CN1998095B (en) 2004-04-20 2005-04-20 Arrayed ultrasonic transducer
CA2563775A CA2563775C (en) 2004-04-20 2005-04-20 Arrayed ultrasonic transducer
EP05744412.7A EP1738407B1 (en) 2004-04-20 2005-04-20 Arrayed ultrasonic transducer
JP2007509599A JP4805254B2 (en) 2004-04-20 2005-04-20 Arrayed ultrasonic transducer
HK07105608.6A HK1098252A1 (en) 2004-04-20 2007-05-29 Arrayed ultrasonic transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56378404P 2004-04-20 2004-04-20
US60/563,784 2004-04-20

Publications (2)

Publication Number Publication Date
WO2005104210A2 WO2005104210A2 (en) 2005-11-03
WO2005104210A3 true WO2005104210A3 (en) 2006-12-14

Family

ID=35197627

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/013473 WO2005104210A2 (en) 2004-04-20 2005-04-20 Arrayed ultrasonic transducer

Country Status (7)

Country Link
US (2) US7230368B2 (en)
EP (1) EP1738407B1 (en)
JP (1) JP4805254B2 (en)
CN (1) CN1998095B (en)
CA (1) CA2563775C (en)
HK (1) HK1098252A1 (en)
WO (1) WO2005104210A2 (en)

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