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Apparatus and methods for measuring characteristics of biological tissues and similar materials

  • US 5,582,168 A
  • Filed: 01/22/1993
  • Issued: 12/10/1996
  • Est. Priority Date: 07/17/1991
  • Status: Expired due to Term
First Claim
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1. An apparatus for determining the normalized characteristics of biological tissue or other medium comprising:

  • a. means for illuminating the medium with electromagnetic radiation directed into the medium, thereby causing the medium to react with a first action selected from the group consisting of reflecting, backscattering, transmitting, and emitting responsive radiation and a second action selected from the same group excluding the first action;

    b. means for collecting the responsive radiation;

    c. means, connected to the collecting means, for separating the collected radiation into a plurality of components; and

    d. means, connected to the separating means, for (i) measuring the intensity of each of the separated plurality of components and (ii) determining a mathematical relationship between the separated plurality of components.

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