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Detection apparatus for detecting an amount of an object of analysis in a fluid present in an eye or on an eye surface

  • US 7,639,845 B2
  • Filed: 08/02/2005
  • Issued: 12/29/2009
  • Est. Priority Date: 08/06/2004
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting an amount of an object of analysis by using a sensor element, the sensor element of a contact lens shape on an eye, comprising:

  • a lens barrel which comprises;

    a light source for illuminating the sensor element,an image pickup device for picking up an image of an iris, anda light-shielding member for preventing external light from entering inside of the lens barrel;

    wherein the sensor element includesa sensor portion comprised of a substrate for fixing a molecule capable of selectively capturing the object of analysis anda code portion for identifying a subject person; and

    wherein (i) an image of the code portion is picked up by the image pickup device, illuminating the code portion with the light source, (ii) an image of an iris is picked up by the image pickup device, illuminating the eye with the light source (iii) and the image of the code portion and the image of the iris are compared to each other to identify the subject person;

    wherein, with a reagent comprised of a fluorescent substance present on said sensor element, the fluorescent substance executing a competing reaction with the object of analysis, and the light source illuminating said sensor element, the amount of the object of analysis captured by the capturing molecule is detected by an amount of fluorescence of the fluorescent substance, andwherein the sensor portion is irradiated with light having a wavelength different from the wavelength of light with which the code portion and the iris are irradiated to detect the amount of the object of analysis when the subject person is identified from a sensor portion for identifying.

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