| 摘要 |
PROBLEM TO BE SOLVED: To obtain a particle detector capable of acquiring a size signal indicating a size of a floating particle and a shape signal indicating a shape of the floating particle on the basis of scattered light from the floating particle light-received from a light receiving optical system of one system.SOLUTION: A particle detector 10 for detecting pollen on the basis of characteristics of scattered light La radiated from a floating particle Pf irradiated with linear polarized light L includes a scattered light receiving part 120 including a single optical system for converging the scattered light on the scattered light receiving part. The scattered light receiving part 120 includes a polarized light receiving part for detecting a degree of a change in a polarization direction between the polarized light and the scattered light and a normal light receiving part for detecting intensity of the scattered light and is configured so that convergence spots obtained by converging the scattered light La by the optical system are formed on a light receiving area of the polarized light receiving part and a light receiving area of the normal light receiving part. |
