JP2826449B

The present invention offers a method and an apparatus for flow type particle image analysis wherein a pulse light emission is generated in any one of the odd and the even field image reading out period and the multiple exposure is prevented by prohibiting the next pulse light emission in the predetermined period after the emission. The method of the present invention comprises the steps of flowing sample liquid in a flow cell, detecting particles passing through the flow cell by laser beam, making a flash lamp emit light after the predetermined period from the particle detection, picking up a particle still image by a TV camera and further preventing the multiple exposure by providing emission prohibiting periods which are established by controlling the timings of flash lamp emission and image transfer with the TV camera, a flash lamp emission control circuit and an image processing control circuit which are controlled by a central control part.