Patent ID: 7636159

Claim:
An apparatus for detecting labeled beads, comprising: a plurality of labeled beads, each labeled bead being labeled with a respective marker that is responsive to radiation and that emits emission light indicative of the presence of at least one sample component; at least one irradiation source for emitting radiation and disposed for irradiating the plurality of labeled beads to thereby excite the markers responsive to the radiation and to cause the markers to emit emission light; a detector array disposed for collecting the emission light produced by the markers and for producing charges corresponding to the emission light, the detector array having an output; and a time delay integration system that accumulates charges corresponding to the emission light, within the detector array, before reading accumulated charges at the output of the detector array, wherein the time delay integration system is configured to accumulate charge by moving, relative to one another, the at least one irradiation source and the detector array.