Patent ID: 7443491

Claim:
A system for collecting biological information on a dyed biological particle by irradiating light onto liquid containing the dyed biological particles and detecting information light therefrom, the system comprising: a path-defining structure of transparent material defining a flow path through which the liquid containing the dyed biological particles runs; an irradiation apparatus for irradiating light onto the particles passing through the flow path; a first detecting apparatus for detecting first information light obtained from the irradiated particle; a second detecting apparatus for detecting second information light obtained from the irradiated particle; wherein at least one of said first and second detecting apparatuses includes one or more fiber optics, of which one ends are arranged adjacent the flow path so as to collect the information light; a cylindrical container having a laminar-flow generating chamber provided upstream the flow path; a sheath-fluid line for supplying sheath fluid constituting a main body of the liquid from an upper end of the cylindrical container; a suspension-fluid tube arranged along the central axis of the cylindrical container for supplying suspension fluid containing the particles into the sheath fluid running within the laminar-flow generating chamber; and a mechanism for adjusting at least one of a position and an angle of a suspension-fluid outlet of the suspension-fluid tube.