Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1982-08-30
1984-10-09
Evans, F. L.
Optics: measuring and testing
For optical fiber or waveguide inspection
356410, 356432, 356417, G01N 2159, G01N 2164
Patent
active
044758138
ABSTRACT:
Improved optical systems for liquid chromatographic apparatus comprise flow cells with light transparent portions through which one or more beams of light may be passed through an effluent stream flowing in the cell, one or more light sources on one side of the flow cell to project light through the cell and its contained effluent stream, one or more light limiting apertures positioned on the opposite side of the cell in the paths of the light beams, one or more positive light focusing elements positioned in the path of the light beams from the cell to the apertures to image the center of the cell at the apertures and a light sensor positioned in the path of the light beam on the side of each aperture opposite to its respective light focusing element.
Improved methods of chromatographic analysis using the new optical systems are also disclosed.
REFERENCES:
patent: 4006990 (1977-02-01), Munk
Evans F. L.
Milton Roy Company
Palmer Carroll F.
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