NDLI: Evaluation of visual acuity with gen 3 night vision goggles

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Evaluation of visual acuity with gen 3 night vision goggles

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kaiser, Mary K. Bradley, Arthur
Copyright Year	1994
Description	Using laboratory simulations, visual performance was measured at luminance and night vision imaging system (NVIS) radiance levels typically encountered in the natural nocturnal environment. Comparisons were made between visual performance with unaided vision and that observed with subjects using image intensification. An Amplified Night Vision Imaging System (ANVIS6) binocular image intensifier was used. Light levels available in the experiments (using video display technology and filters) were matched to those of reflecting objects illuminated by representative night-sky conditions (e.g., full moon, starlight). Results show that as expected, the precipitous decline in foveal acuity experienced with decreasing mesopic luminance levels is effectively shifted to much lower light levels by use of an image intensification system. The benefits of intensification are most pronounced foveally, but still observable at 20 deg eccentricity. Binocularity provides a small improvement in visual acuity under both intensified and unintensified conditions.
File Size	1378913
Page Count	42
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940019501
Archival Resource Key	ark:/13960/t8jd9sm7g
Language	English
Publisher Date	1994-01-01
Access Restriction	Open
Subject Keyword	Man/system Technology And Life Support Night Vision Eccentricity Moon Fovea Imaging Techniques Visual Acuity Reflection Amplification Goggles Luminance Radiance Image Intensifiers Night Sky Illuminating Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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