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We developed a new modular luminescence lifetime imaging system (MOLLI), that enables the imaging of luminescence lifetimes in the range of 1 mu s to 1 s. The system can easily be adapted to different experimental applications. The central parts of the system are a recently released CCD-camera with a fast electronic shutter and gated LED (light emitting diode) or Xe excitation light sources, A personal computer controls the gating and image acquisition via a pulse delay generator. Here we present the new imaging system and give examples of its performance when used for measuring two-dimensional oxygen distributions with planar optodes. Furthermore, future applications of the system in biology are discussed, (C) 1998 Elsevier Science S.A. All rights reserved.
