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Detection and imaging of objects in scattering media by light irradiation

  • US 4,555,179 A
  • Filed: 11/08/1982
  • Issued: 11/26/1985
  • Est. Priority Date: 11/08/1982
  • Status: Expired due to Term
First Claim
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1. A method for detecting and imaging objects surrounded by a scattering medium comprising:

  • illuminating the scattering medium with a collimated light beam incident upon and penetrating said medium;

    scanning the collimated light beam through a region of the scattering medium and at successive positions along a scanning path across a selected scanning area;

    detecting the back scattered light in the scattering zone around the locus of incidence of the collimated light beam on the scattering medium and measuring the intensity of the back scattered light from the scattering zone at successive positions along the scanning path across said scanning area;

    registering the measured intensity of light from the scattering zone at said successive positions along the scanning path; and

    associating differential measurements registered along the scanning path with the possible presence of an object.

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