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Arc scan ultrasonic transducer array

  • US 4,462,092 A
  • Filed: 05/14/1981
  • Issued: 07/24/1984
  • Est. Priority Date: 05/15/1980
  • Status: Expired due to Term
First Claim
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1. An ultrasonic transducer array comprising:

  • a curved support having a pair of bridged parallel members convex in the direction of propagation of acoustic energy;

    a plurality of successively arranged elongated transducers each comprising a piezoelectric electric element having a width expansion vibrational characteristic supported between said bridged parallel members, and a pair of first and second electrodes attached to the opposite sides and across the thickness thereof for connection to a transducer control circuit to generate said acoustic energy;

    an impedance matching layer of a resilient material presenting a convex surface for radiating said acoustic energy; and

    a plurality of impedance matching elements corresponding to said transducers and secured between the corresponding transducers and said impedance matching layer to reduce acoustic interference between adjacent transducers and having a higher acoustic impedance than the acoustic impedance of said impedance matching layer to form a double-layered impedance matching structure with said layer to provide impedance matching between a human body and said transducers.

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