Night optics work by using electronics and don’t actually use optical lenses as standard binoculars use to create the image. You aren’t looking at the object, but an amplification of the image projected onto a phosphorus screen. It grabs light from where ever it can find it and amplifies the result as images on a screen. Light availability directly affects the performance of the night vision binoculars. unique nasa hubble telescope Lacking light or moonlight will require an extremely powerful digital night vision binocular. With night vision binoculars and night scopes, there are different levels called generations. Used by the military, these specifications mean the level of sophistication in design of night optics ranked from generation 1 through 4.