Use of Night Vision Goggles in the Underwater Environment

Military operators conducting clandestine missions at night use night vision goggles (NVGs) to provide enhanced vision without having to use visible auxiliary light sources. This capability is essential for completing missions and remaining undetected. Military divers also conduct clandestine missions at night, with the added challenge of being in the underwater environment. Ambient light such as moon light or star light is practically nonexistent in poor visibility conditions at depth, and using auxiliary visible light sources in clandestine missions is not possible. In addition, due to the water/glass interface on the NVG objective lens curved surface altering the index of refraction, they do not perform effectively underwater.