How Does Night Vision Work
HOW DOES NIGHT VISION WORK?
Night Vision amplifies ambient light that may not be visible to the naked eye, and allows you to see in darkness. Night vision is broken down into multiple generations, each offering a higher level of performance (ranging from Gen1 – Gen3, as well as Digital Night Vision).
Night Vision technology uses various types of image intensifier tubes that convert weak light from the visible and near-infrared spectrum to visible light detectable by a human eye. Allowing people to see in semi dark or full darkness with the help of IR illumination or ambient light.
Night Vision amplifies this ambient light by passing through electron charged intensifier tubes. All night vision devices are very sensitive to light, and are possible to damage by exposing to sunlight, headlights from cars, or from too much direct light
All Starlight technology Night Vision Devices consist of several main parts: an objective lens, an eyepiece, a power supply and an image intensifier tube (Photocathode Tube).
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.