Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1988-05-23
1989-05-02
Willis, Davis L.
Optics: measuring and testing
By particle light scattering
With photocell detection
250574, 356246, 356341, 422 64, 422 73, 436164, G01N 2151, G01N 33557, G01N 3502
Patent
active
048263192
ABSTRACT:
A coherent laser light flux is projected into a cell made of transparent quartz and light scattered from particles suspended in an antigen-antibody reaction liquid contained in the cell is detected by a photomultiplier by means of a collimator. An output electrical signal from the photomultiplier is sampled at different time instances and samplings are supplied to a fast Fourier transformer to derive a plurality of power spectrum desnities of fluctuation in intensity of the scattered light. A plurality of power spectrum densities are averaged to generate a mean power spectrum density. An amount of antigen contained in the reaction liquid is measured in accordance with the mean power spectrum density.
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Ando Outaro
Karaki Kouichi
Nagasaki Tatsuo
Namba Akihiro
Ohno Masahiro
Koren Matthew W.
Olympus Optical Co,. Ltd.
Willis Davis L.
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