Patent ID: 9109987
Filing Date: 2015-08-18
Classification: G01J,G01N

Abstract:
1. A particle detecting device comprising: a light source that illuminates a fluid with an excitation beam; a fluorescence measuring instrument that measures light in a fluorescent band, which is produced in a region that is illuminated by the excitation beam; and an evaluating portion that evaluates whether or not the light that is measured by the fluorescence measuring instrument includes Raman-scattered light and florescent light, to evaluate that a fluorescent particle is included in the fluid if the evaluation is that the measured light includes florescent light, and to evaluate that the fluid does not include a fluorescent particle if the evaluation is that the measured light does not include fluorescent light, to evaluate that moisture is included in the fluid if there is an evaluation that the measured light includes Raman scattered light, and to evaluate that the fluid does not include moisture if there is an evaluation that the measured light does not include Raman scattered light.