U.S. Army aviators use the AN/PVS-5 Night Vision Goggles (NVG) with a modified faceplate which enables wearing of corrective spectacles, when required. The next generation NVGs, the Aviator Night Vision Imaging System (ANVIS), permit spectacle wear by design. With only glass lenses available to the aviator requiring optical correction, there is a potential for eye injury from broken glass should the goggles accidentally be displaced. This report documents studies to (1) compare the impact resistance of glass, CR-39 (plastic), and polycarbonate lenses to simulated NVG tubes, (2) establish the approximate forces necessary to cause glass lens breakage by displaced NVG tubes, and (3) determine the performance of polycarbonate lenses in the aviation environment. Polycarbonate lenses, ophthalmic lenses, spectacle lenses, night vision goggles (NVG), Aviator night vision imaging system. (jes)
Polycarbonate Ophthalmic Lenses for Ametropic Army Aviators Using Night Vision Goggles
1988
38 pages
Report
No indication
English
Military Sciences , Protective Equipment , Plastics , Eyeglasses , Goggles , Night vision devices , Ophthalmology , Polycarbonates , Aeronautics , Army personnel , Corrections , Environments , Eye , Glass , Impact strength , Lenses , Optical properties , Pilots , Resistance , Wear , Wounds and injuries
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