Point of care diagnostic systems

  • US 6,867,051 B1
  • Filed: 11/20/2000
  • Issued: 03/15/2005
  • Est. Priority Date: 02/03/1998
  • Status: Expired due to Term
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First Claim
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1. A method for reading a surface of a test strip comprising an image, comprising:

  • moving a reader head in a reflectance reader to a first position over the surface comprising the image;

    measuring a first amount of light reflected from the surface comprising the image;

    uniformly illuminating the surface with light of a first wavelength, and measuring a second amount of light reflected from the surface; and

    uniformly illuminating the surface with light of a second wavelength, and measuring a third amount of light reflected from the surface, wherein the reader head comprises;

    a reader head body;

    a light emitting diode;

    a first fiberoptic bundle optically coupled to the light emitting diode;

    a photodetector;

    a second fiberoptic bundle optically coupled to the photodetector;

    an aperture in the reader head body; and

    a plurality of fiberoptic conductor ends arranged in a sigmoidal distribution in the aperture, wherein;

    a first portion of the fiberoptic conductor ends comprises fiberoptic conductors of the first fiberoptic bundle; and

    a second portion of the fiberoptic conductor ends comprises fiberoptic conductors of the second fiberoptic bundle.

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