The working principle of infrared night vision device The principle of infrared night vision device is to collect and enhance the existing light by focusing the light on the image intensifier through the eyepiece. Inside the intensifier, a photocathode is "activated" by the light and converts the photon energy into The electrons are accelerated by an electrostatic region inside the booster and hit the phosphor surface screen (like a green TV screen), forming an image visible to the human eye. To put it simply, the principle of night vision is to convert the invisible light (low light or infrared light) signal from the target into an electrical signal, then amplify the electrical signal, and convert the electrical signal into a light signal visible to the human eye.
