Night Vision Sights and Devices
Night vision devices provide observation and aiming in natural night light conditions (starlight and moonlight). NVDs use the principle of image intensification. An optical system containing a lens, an IIT (Image Intensification Tube), and an eyepiece collects the available light reflected by the observed objects and projects the intensified image into the operator's eye. The products use IIT generation 2+ and 3 with green or black-and-white screens.