DREIDIMENSIONALES BILDERZEUGUNGSSYTEM

A three-dimensional vision system comprises: a transmission module (1), made up of a pulsed source; a receiver module (2), comprising at least one photosensitive element, operating in the same spectral window as the transmission module; and a unit (3) comprising synchronization and electronic-processing means capable of carrying out the integration of the echo pulse train in n (n ≥ 3) sequences of integration windows, each sequence, which is made up of m windows with repetition frequency f, being temporally out of phase with respect to the preceding one by a time interval equal to the duration of the individual pulses emitted by the transmission module. The unit (3) is further capable of carrying out calculation of the distance covered by weighing the levels of the integrated signals for the various sequences, on the basis of the extrapolation of the time of flight of the pulse, which is equal to the distance in time between the instant of emission and the rising edge of the echo pulse. The integrated-signal level in each sequence depends upon the percentage of pulse that is integrated in the sequence. Said value depends upon the instant of arrival of the pulse.