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Low noise optical probe

  • US 5,638,818 A
  • Filed: 11/01/1994
  • Issued: 06/17/1997
  • Est. Priority Date: 03/21/1991
  • Status: Expired due to Term
First Claim
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1. An energy sensor comprising:

  • a housing having a support surface for a tissue material which is to be analyzed;

    a chamber having an entrance in the form of an aperture defined on said housing support surface such that, when said housing is positioned adjacent said tissue material, a first portion of said tissue material covers said aperture and is supported by said support surface around said aperture;

    a detector located in said chamber, said detector positioned in said chamber in a manner such that said portion of said tissue material which covers said aperture is isolated from said detector;

    a first portion of optically scattering medium positioned at the support surface such that when said support surface is placed adjacent the tissue material, the optically scattering medium is located between the detector and the tissue, said optically scattering medium comprising a conformable material; and

    a light energy source in communication with said detector and said chamber via said aperture, said energy source configured to transmit energy to said detector.

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