PHOTON DETECTOR WITH AN IMMOBILISABLE PHOTON-SENSITIVE ELEMENT, IN PARTICULAR SPAD, AND DISTANCING MEASURING DEVICE COMPRISING SAID TYPE OF PHOTON DETECTOR

摘要

The invention relates to a photon detector (1) comprising, in addition to an immobilisable photon-sensitive element (5), a photon transmission element (7). Said photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element (5) and transmitted by the photon transmission element (7), for example, by modifying an absorption property or a defocussing property of the photon transmission element (7). Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilisation range. The invention also relates to a distancing device comprising said type of photo detector.