Document Type and Number:
Japanese Patent JPS5051779
Kind Code:
A
Abstract:
A method and apparatus for photometrically measuring the concentration ratio of two components in a two-component system comprising separately directing at least three of five monochromatic light beams of different wavelengths onto a first of two components of the two-component system while the components are separated from each other; in which each of the five monochromatic light beams of different wavelengths are separately directed onto the second of the two components of the two-component system while the two components are separated from each other; in which at least three of the five monochromatic light beams are separately directed onto the object to be measured while only the first component of the two-component system is present in the object; in which the five monochromatic light beams of different wavelengths are separately directed onto the object to be measured, while only the second component of the two component system is present in the object. In each case reflectivity and/or transmissivity measurements of the resulting intensities are made; these resulting intensities determine calibration intensities. Each of the five monochromatic light beams are then directed onto the object on which the measurements are to be made, and the resulting reflected system-intensities measured. The calibrating intensities together with the measured system-intensities are then utilized to determine the relative concentration of the two components in the two-component system.
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Application Number:
JP9547074A
Publication Date:
May 08, 1975
Filing Date:
August 20, 1974
Export Citation:
International Classes:
A61B5/145; A61B5/00; A61B5/1455; A61B5/1495; G01J3/28; G01J3/427; G01N21/27; G01N21/31; (IPC1-7): A61B5/00; G01J3/28; G01N21/22