A particle analyzing apparatus includes a flow device having a light-transmissive flow cell for allowing subject particles in a sample liquid to flow in a separated state, a laser beam illuminator for illuminating a subject particle flowing in the flow cell with a laser beam and a coherence lowering...http://www.google.de/patents/US5596401?utm_source=gb-gplus-sharePatent US5596401 - Particle analyzing apparatus using a coherence lowering device
