Traffic Signs Optimized for Night Vision Based Navigation
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United States of America Patent
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Issued Date -
Mar 21, 2013
app pub date -
Sep 13, 2012
filing date -
Sep 16, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention relates to traffic signs which are optimized for night vision based navigation. The symbol/word of the traffic sign is designed to have a thick outline with different reflectivity relative to the background in the infrared wavelength region. As a result, the traffic signs are not only visible to the human eyes but also discernible under night vision equipment.
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