This handbook describes the bh TCSPC FLIM systems for the Olympus Fluo View FV1000 laser scanning microscopes. The systems are based on bh’s proprietary multi-dimensional TCSPC technique. The systems are modular, and a large number of system configurations are available. The fluorescence light may be detected by one, two, or four detectors, or in 16 channels of a multi-wavelength system. Moreover, the systems may use a single TCSPC channel, or several TCSPC channels may be used in parallel to increase the acquisition speed.