Particle diameter measuring apparatus

Details Particle diameter measuring apparatus Particle diameter measuring apparatus

2008-03-25

2008-03-25

Punnoose, Roy M (Department: 2886)

Optics: measuring and testing

For size of particles

C356S336000

Reexamination Certificate

active

07349084

ABSTRACT:
A particle diameter measuring apparatus includes a dark field illumination section which dark-field-illuminates particles to be subjected to measurement, an image pickup section which captures a particle image of each of the dark-field-illuminated particles, and a computing section which calculates a particle diameter of each particle based on luminance of the captured image.

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patent: 6999171 (2006-02-01), Kusuzawa
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patent: 1 286 152 (2003-02-01), None
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patent: 05-273110 (1993-10-01), None
patent: 08-136439 (1996-05-01), None

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