Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1992-08-31
1996-08-20
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
356 39, G01N 1514, G01N 2123
Patent
active
055483950
ABSTRACT:
A particle analyzer comprising a one-dimensional image sensor for producing imaging signals by scanning a particle in a flow of specimen containing particle components such as blood and urine in a flat sheath flow thin in thickness in the light emitting direction and broad in the direction orthogonal to the light emitting direction, and a signal processing device for processing the signals and operating on the basis of the imaging signals from the one-dimensional image sensor. A particle analyzer excellent in analyzing capability for obtaining morphological information of particles in the liquid specimen flowing in a flow cell in real time is presented. Besides, by emitting light to a flowing particle, the transmitted light image is focused on the one-dimensional image sensor (line sensor), and the detected image signal from the line sensor is further processed in detail in the signal processing device. The signal processing device comprises a background correction processing circuit, a binarizing processing circuit, a binary signal processing circuit, a particle region division processing circuit and an arithmetic circuit. A particle analyzer high in analyzing capability for obtaining the absorption quantity and morphological information of individual particles in the liquid specimen flowing in a flow cell in real time is presented.
REFERENCES:
patent: 5159642 (1992-10-01), Kosaka
patent: 5247340 (1993-09-01), Ogino
Hantis K. P.
McGraw Vincent P.
TOA Medical Electronics Co., Ltd.
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