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A 72 × 60 Angle-Sensitive SPAD Imaging Array for Lens-less FLIM
2016
Sensors
We present a 72 × 60, angle-sensitive single photon avalanche diode (A-SPAD) array for lens-less 3D fluorescence lifetime imaging. An A-SPAD pixel consists of (1) a SPAD to provide precise photon arrival time where a time-resolved operation is utilized to avoid stimulus-induced saturation, and (2) integrated diffraction gratings on top of the SPAD to extract incident angles of the incoming light. The combination enables mapping of fluorescent sources with different lifetimes in 3D space down to
doi:10.3390/s16091422
pmid:27598170
pmcid:PMC5038700
fatcat:dmqjx2oimjbt5bijvvryie462y