Particle size analyzer
AssigneeShimadzu Corporation
InventorShinichiro Totoki
Life of this patent
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Abstract
A laser diffraction particle size analyzer irradiates a laser beam on particles in a scattered state, and measures a spatial intensity distribution of diffracted and scattered light from the particles. A particle size distribution of the particles is calculated from a result of the measurement. The laser diffraction particle size analyzer includes a laser device for generating an ultraviolet laser beam as a light source for generating a laser beam, and a fluorescent member closely attached to or disposed adjacent to a detecting surface of a photodiode array that measures the spatial intensity distribution of the diffracted and scattered light upon incidence thereof.
Claims4
A particle size analyzer for determining a particle size distribution of particles, comprising:
- a light source for irradiating an ultraviolet laser beam on the particles,
- a fluorescent member for emitting fluorescent light when the fluorescent member receives light diffracted and scattered from the particles, and
- a photodiode array having a detecting surface disposed adjacent to the fluorescent member for receiving the fluorescent light from the fluorescent member to obtain a spatial intensity distribution of the light diffracted and scattered from the particles,
- wherein said fluorescent member is a paint coated on the detection surface of the photodiode array.
Dependencies are inferred from the claim text.