What Is Digital Night Vision?

Night vision devices are divided into two types, active and passive. The active night vision system uses invisible light as the light source. It has two working modes: one is an area light emitter, such as an infrared lamp; the other is a narrow beam control scanning field of view, which receives reflected invisible light. Images are simultaneously displayed on the monitor's fluorescent screen. This night vision device can also be called light night vision device, such as infrared, ultraviolet, X-ray, etc. The passive night vision system uses the natural low light such as moonlight, starlight, sky glow, and the heat of the object itself to magnify and enhance the image with an image intensifier to achieve visibility; this type of night vision device is also called low light night Camera or thermal imager.