transformer-less fiber Plectranthus capacitance probe 20 for use with the sample matrix (22) A method and apparatus for measuring the concentration of a target analyte are disclosed in the non-invasive. Such a method and apparatus to direct the beam of electromagnetic radiation comprising at least two components of different wavelengths to the sample matrix (22), outputs a signal representing the differential absorption of the two wavelengths in the back scattered radiation sample matrices 22 which includes leading to detector 18. Trans Plectranthus capacitance probe (20) between the surface of the tapered tubular housing 50, the outer reflecting surface 45 the optical rod having an 40, and the probe and the sample matrix (22) having an interior reflective surface (52) and a detection window 46 that serves as an interface. The described method and apparatus is particularly useful for measuring the concentration of glucose in the tissue 22 including the blood. ;
展开▼
