×

Programmable standard for use in an apparatus and process for the noninvasive measurement of optically absorbing compounds

  • US 5,748,308 A
  • Filed: 02/02/1996
  • Issued: 05/05/1998
  • Est. Priority Date: 02/02/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. A noninvasive process of determining the concentration of an optically absorbing compound in a biological sample comprising comparing a spectrum of light passing through the sample with a spectrum of light passing through a programmable standard and correlating the spectra to determine the concentration of the compound, said programmable standard comprising (1) a dispersive element;

  • (2) a spatial filter aligned to receive light from the dispersive element; and

    (3) a means for recombining the light which is reflected from the spatial filter, said means for recombining the light being optically aligned to receive light from the spatial filter.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×