Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1994-10-21
1997-01-14
Rosenberger, Richard A.
Optics: measuring and testing
For optical fiber or waveguide inspection
G01N 2105
Patent
active
055945449
ABSTRACT:
A flow type particle image analyzing method and apparatus in which high-speed and high-precision image analysis can be achieved with a simple configuration are realized. A flow chamber is structured so that the dimension of the sample fluid in a direction substantially orthogonal to the direction of the light beam remains substantially constant in a direction of flow in an imaging zone. Furthermore, when particles have small diameters, a power for imaging is set to a fixed high value. When particles have large diameters, the thickness of a sample fluid is increased in order to provide a sufficient number of sample particles. Accordingly, no switching operation of an optical systems is required.
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Horiuchi Hideyuki
Matsumoto Masaetsu
Suda Koji
Hitachi , Ltd.
Rosenberger Richard A.
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