Berthoud, A.Burri, S.Bruschini, C.Berne, A.Charbon, E.2012-06-122012-06-122012-06-122011https://infoscience.epfl.ch/handle/20.500.14299/81715We present a new environmental application of SPAD imagers, namely the continuous and real-time measurement of size and shapes of hydrometeors. Details of the set-up and results obtained with a first 32x32 pixel prototype based on the RADHARD2 chip [1] are illustrated. Real-time operation at very low light levels, 6000 frames per second and 1:100 average data reduction are amongst the most significant achievements.text::conference output::conference proceedings::conference paper