The invention relates to a flat image acquisition system which has a lens matrix arrangement (3)containing a plurality of adjacent microlenses (4). The system also comprises a flat photodetector arrangement which is positioned in an image plane (6) in the beam path, behind the microlenses (4). The distance (A) between the front of the lens matrix arrangement (3) and the sensitive surface of the photodetector arrangement is less than 1 cm, especially less than 0.5 cm.