Technologies of Night Vision

Night vision devices gather existing ambient light (starlight, moonlight or infra-red light) through the front lens. This light, which is made up of photons goes into a photocathode tube that changes the photons to electrons. The electrons are then amplified to a much greater number through an electrical and chemical process. The electrons are then hurled against a phosphorus screen that changes the amplified electrons back into visible light that you see through the eyepiece. The image will now be a clear green-hued amplified re-creation of the scene you were observing.


1. Front Lens
2. Photocathode
3. Microchannel plate
4. High Voltage Power Supply
5. Phosphorus Screen
6. Eyepiece



You can find more interesting information on Night-Vision-Technology.com