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Ultrasound transducer

  • US 5,187,981 A
  • Filed: 03/12/1991
  • Issued: 02/23/1993
  • Est. Priority Date: 03/12/1991
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic transducer assembly for illuminating a target with a sector shaped beam of ultrasonic energy comprising, in combination:

  • a transducer housing open at one end;

    an ultrasound transducer coupled to said housing, capable of illuminating a target with a sector shaped beam pattern of ultrasonic energy and receiving reflections of ultrasonic energy from said target;

    a stand-off assembly for holding said transducer a predetermined distance from said target; and

    means for attenuating the ultrasonic energy generated by said transducer, said attenuating means comprising an apodizing structure have a ring-like shape, said structure covering the periphery, but not the center region of said transducer, whereby said attenuation is greater at the periphery of said transducer than at its center.

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