A particle image analyzer includes a first light source for applying strobe light to a sample solution flowing through a flow cell, first image pick-up means for taking a still picture of a particle in the sample solution irradiated by the first light source, a second light source for constantly irradiating...http://www.google.fr/patents/US5159642?utm_source=gb-gplus-shareBrevet US5159642 - Particle image analyzing apparatus