G - Physics – 02 – B
Patent
G - Physics
02
B
117/46
G02B 5/128 (2006.01) B44F 1/02 (2006.01) G02F 1/09 (2006.01) G09F 13/16 (2006.01) H01F 10/00 (2006.01)
Patent
CA 1077786
ABSTRACT Novel magnetically orientable retroreflectoriza- tion particles permit application of highly oriented retro- reflective coatings. The retroreflectorization particles individually comprise at least one transparent microsphere, specular reflective means in optical connection with a first portion of said microsphere so as to provide retroreflection of light incident on the opposed portion of the microsphere, and a magnetic layer underlying said specular reflective means and having a magnetic axis parallel to the optical axis on which said first and opposed portions of the micro- sphere are aligned. When the particles are applied to a substrate in the presence of a magnetic field having flux lines of appropriate polarity perpendicular to the sub- strate, the particles tend to become aligned in a common direction that retroreflects light incident on the coating.
279777
Bailey Terry R.
Erickson Randall L.
LandOfFree
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