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Device for localizing an object in a turbid medium using a modulated light source

  • US 5,807,262 A
  • Filed: 12/19/1996
  • Issued: 09/15/1998
  • Est. Priority Date: 12/22/1995
  • Status: Expired due to Fees
First Claim
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1. A device for localizing an object in a turbid medium, comprising:

  • a first light source for irradiating the turbid medium by means of modulated light having a modulation in the form of pulses having a duration and a repetition frequency,detector for generating a detector signal from modulated light emanating from the turbid medium, anda processing unit for determining optical parameters of the turbid medium from the detector signal,wherein the duration and repetition frequency of said pulses is chosen to introduce into the turbid medium a superposition of photon density waves with different frequencies including the repetition frequency and higher harmonics thereof.

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