Programmable optical label
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United States of America Patent
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Sep 25, 2012
Grant Date -
N/A
app pub date -
Oct 31, 2007
filing date -
Nov 13, 2006
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Abstract
The present invention is a programmable and latching retro-reflective construct suitable for use as an optical label in an optical labeling system. The invention contains retro-reflective structures such as lens beads, corner cubes or other retro-reflecting type structures. The retro-reflective construct further comprises a wavelength selective, programmable and latching reflecting structure located at the reflecting surfaces of the retro-reflective structures. The optical construct can optionally contain additional optical filtering structures. Methods for fabricating the invention are also described.
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