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Method of and apparatus for the detection of an ultrasonic field

  • US 5,589,636 A
  • Filed: 12/06/1994
  • Issued: 12/31/1996
  • Est. Priority Date: 04/22/1994
  • Status: Expired due to Fees
First Claim
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1. A method for detecting ultrasonic waves propagated through a medium, comprising the steps of:

  • (a) at a given time collecting respective ultrasonic waves at each of a plurality of spaced apart collection locations in said medium;

    (b) passing ultrasonic waves collected at said given time at each of said collection locations from the respective collection location to a common detection site along a respective ultrasonic wave path assigned to the respective collection location having a sound transit time different from sound transit times of others of said ultrasonic wave paths terminating at said common detection site; and

    (c) detecting ultrasonic waves received at said common detection site with a single transducer responsive to ultrasonic waves from a plurality of said paths and received in a time-spaced relationship determined by the respective sound transit times, and converting the detected ultrasonic waves to electrical signals with said transducer.

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