This product uses InGaAs single photon avalanche diodes as the detection unit,achieving single photon sensitivity detection in the near-infrared band.By emitting picosecond pulse width and using TCSPC technology,the measurement of photon flight time picosecond accuracy has been achieved.By adopting a unique optical path design,high signal-to-noise ratio is achieved;Integrated and compact system design,making the system small and movable in size;Fine timing control makes the imaging process intelligent and efficient.