Optical: systems and elements – Having significant infrared or ultraviolet property – Having folded optical path
Patent
1992-02-13
1993-04-06
Lerner, Martin
Optical: systems and elements
Having significant infrared or ultraviolet property
Having folded optical path
359529, 359530, 252587, G02B 5124, G02B 522
Patent
active
052008517
ABSTRACT:
Cube-corner type retroreflective articles which retroreflect infrared light but do not substantially retroreflect visible light. The cube-corner elements comprise a polymeric matrix selected to be highly transmissive to infrared light but substantially opaque to visible light.
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United States Defensive Publication T987,003 (Johnson et al.).
Burns David M.
Coderre James C.
Griswold Gary L.
Jordan Robert H.
Kirn Walter N.
Lerner Martin
Minnesota Mining and Manufacturing Company
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