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Ultrasonic transducer with magnetostrictive lens for dynamically focussing and steering a beam of ultrasound energy

  • US 5,458,120 A
  • Filed: 12/08/1993
  • Issued: 10/17/1995
  • Est. Priority Date: 12/08/1993
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic transducer for an imaging system comprising:

  • a transducer element which generates a beam of ultrasound energy propagating along a transducer axis with a predetermined speed of propagation; and

    a magnetostrictive lens acoustically coupled to said transducer element and having an input face positioned at an angle with respect to said transducer axis to receive and to pass said beam of ultrasound energy, said magnetostrictive lens operable such that said speed of propagation of said beam is selectively controlled as said beam passes through said lens.

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