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Ultrasonic transducer

  • US 4,672,591 A
  • Filed: 01/17/1986
  • Issued: 06/09/1987
  • Est. Priority Date: 01/21/1985
  • Status: Expired due to Term
First Claim
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1. An ultrasonic transducer comprising:

  • a support body;

    a piezoelectric vibrator body attached to said support body, said vibrator body being made of a material having a high dielectric constant and a high acoustic impedance;

    a first matching layer at least indirectly attached to said vibrator body, said first matching layer consisting of silicon; and

    a second matching layer at least indirectly attached to said first matching layer on a side thereof opposite said vibrator body;

    said first and second matching layers being provided for acoustic matching of said piezoelectric vibrator to a medium contacting said second layer, said medium being selected from a group consisting of water and body tissue.

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