FOR BIOLOGICAL FLUIDS ANALYSIS IN THE VISIBLE SPECTRUM

This paper reports a biosystem (biological system) for analyzing biochemical substances in biological fluids. Rather than one channel, it comprises 16 highly-selective optical-channels that enable the measurement of the concentration of 16 different biochemical substances. An array of 16-optical filters with high reflectivity and low absorption loss has been designed using dielectric films. Each filter is sensitive in a single wavelength with a FWHM (Full-Width-Half-Maximum) < 5 mn and peak intensity> 52%. A commercially available band-pass optical filter with a band-pass wavelength in 450-600 mn is used to enable the use of a white light source for biosystem illumination. Preliminary tests with a single-channel are successfully demonstrated