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12 July 1999 Effect on vision of light scatter from HMD visors and aircraft windscreens
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Abstract
The amount of scattered light, or haze, typically increases as transparent materials age, wear, become dirty, or become scratched from cleaning. Light scattered from scratched aircraft transparencies, such as windscreen, head-up-display combiners, and helmet visors, can potentially reduce pilot visual performance and reduce target detection range. Presented in this paper are the results of an investigation of light scattered from transparencies exhibiting different levels of wear and surface damage. Two methods of measuring scattered light are compared. Visual performance under conditions of white light scatter relevant to the use of helmet-mounted displays in the cockpit is also examined.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter L. Marasco and H. Lee Task "Effect on vision of light scatter from HMD visors and aircraft windscreens", Proc. SPIE 3689, Helmet- and Head-Mounted Displays IV, (12 July 1999); https://doi.org/10.1117/12.352817
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