Time-resolved multi-spectral wide-field fluorescence lifetime imaging microscopy with a SPAD array detector

Multispectral Fluorescence Lifetime Imaging Microscopy (FLIM) is a fundamental tool to study multifold processes in biology and material science. The growing demand for acquisition time reduction requires the parallel acquisition of a multi-dimensional dataset and the exploitation of compressive sensing techniques. In this work we present a multispectral FLIM set-up based on wide-field structured illumination coupled with a spectrometer and a novel time-resolved parallel 18x1 SPAD array detector, working in a single pixel camera scheme. We show the system characterization and its imaging properties varying the compression ratio.