Device for detecting optical pulses

A device for detecting optical pulses, each optical pulse having a pulse width, the device comprising a sensor having a plurality of pixels, each pixel comprising:

• a receiver configured to receive optical pulses and to generate an electrical signal having variations representative of the received optical pulses, each variation of the electrical signal having a frequency in the frequency domain dependent on the pulse width of the pulse corresponding to said variation,
• an event detection unit comprising at least one frequency filter, the or at least one frequency filter having at least one adjustable cut-off frequency, the cut-off frequency of each filter defining a passband for the event detection unit, the passband having a lower bound and an upper bound, the adjustable cut-off frequency of the or each filter being set so that the upper bound is greater than or equal to 1 Megahertz, the event detection unit being configured to detect over time variations in the electrical signal generated by the receiver only when the frequency in the frequency domain of said variations is within the passband of the event detection unit, and
• a timing unit configured to date each change in the electrical signal detected by the event detection unit.