General speaking, the night vision device is an instrument that can help us see the target clearly at night.

A device that uses infrared or natural low light to realize observation at night or under other low-light conditions with the help of photoelectric imaging devices. It is used for night observation, reconnaissance, aiming, driving, command, map reading, guidance, remote control, engineering rescue and field rescue, etc.

According to its working band, it can be divided into infrared night vision instrument and low-light night vision instrument. According to its working principle, it is divided into active night vision instruments (active infrared instruments) and passive night vision instruments (low-light instruments and passive infrared instruments).