Optics: measuring and testing – For size of particles – By particle light scattering
Reexamination Certificate
2006-02-14
2006-02-14
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
For size of particles
By particle light scattering
Reexamination Certificate
active
06999171
ABSTRACT:
A particle size measuring apparatus includes a laser light source; a coherence reducing element for receiving laser light emitted by the laser light source, reducing coherence of the laser light and emitting the laser light whose coherence is reduced; a ring light forming section for converting the light emitted by the coherence reducing element into ring light; an internal reflection mirror for concentrating the ring light on a particle to be measured and illuminating the particle; an object lens for receiving scattered light from the illuminated particle inside the ring light; a photoreceptive element for receiving the scattered light through the object lens; and a calculating section for calculating a size of the particle from the intensity of the scattered light obtained by the photoreceptive element by using a monotone increasing function.
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Birch & Stewart Kolasch & Birch, LLP
Punnoose Roy M.
Sysmex Corporation
Toatley , Jr. Gregory J.
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