A laser light source emits a first light beam irradiating a solution including target particles and being flowed in a flow cell to generate forward scattered light and orthogonal scattered light therefrom. A light emitting diode emits a second light beam irradiating the solution in the flow cell to generate...http://www.google.de/patents/US7477363?utm_source=gb-gplus-sharePatent US7477363 - Flow cytometer
