Polycarbonate Ophthalmic Lenses for Ametropic Army Aviators Using Night Vision Goggles
Abstract
U.S. Army aviators use the AN/PVS-5 Night Vision Goggle s (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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA203100
Entities
People
- John K. Crosley
Organizations
- United States Army Aeromedical Research Lab