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Verification device for optical clinical assay systems

  • US 6,061,128 A
  • Filed: 08/24/1998
  • Issued: 05/09/2000
  • Est. Priority Date: 09/04/1997
  • Status: Expired due to Term
First Claim
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1. An electronically controlled optical reference device useful for the verification of a clinical analytical system having an optical detection apparatus, the reference device comprising:

  • an opaque optical reference;

    an optical shutter disposed to pass an optical signal between the optical detection apparatus and the opaque optical reference, wherein the optical shutter is divided into a plurality of independently or semi-independently controlled pixel elements, such that the optical shutter modulates the intensity of the optical signal by varying the optical state of the shutter pixels in a time dependent manner; and

    means for controlling the percent exposure of the optical reference to the optical detection apparatus to simulate a colorimetric, fluorescent, or luminescent test reagent;

    wherein said controlling means controls the rate at which the optical reference is selectively revealed to the optical detection apparatus so as to simulate the reaction rates of one or more levels of clinical analytes reacting with a test reagent.

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