Patent ID: 7041153

Claim:
A method for measuring pollens floating in an atmosphere, comprising: collecting the pollens on a dust-collecting electrode by a collecting device comprising a container, a pump for sucking the atmosphere with the pollens into the container, a discharge electrode disposed in the container for generating single ions to charge the pollens floating in the atmosphere in the container, the dust-collecting electrode disposed in the container and being formed of a transparent plate having a transparent conductive film on a surface thereof facing the discharge electrode, said dust-collecting electrode being electrically connected to a ground potential for drawing and collecting the pollens charged in the container when a potential difference is provided to the discharge electrode, means for dispersing the pollens on the dust-collecting electrode, means for irradiating a laser beam to the collected pollens in a dispersed condition, a measuring optical device for measuring a spatial intensity distribution of diffracted and scattered light of the laser by the pollens, and calculating means for measuring a size distribution of the pollens collected on the dust-collecting electrode, and observing the pollens by microscope, and measuring at least one of a number, shape and kind of the pollens.