Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2009-10-30
2010-06-29
Luu, Thanh X (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227170, C359S486010
Reexamination Certificate
active
07745778
ABSTRACT:
An identification system and associated method for identifying objects includes at least one tag having encoded information attached to the surface of an object to be identified, wherein the tag includes a first FSS-based elliptical polarization filter which provides the encoding. A remotely located receiver including a second FSS-based elliptical polarization filter and a linear polarizer optically coupled to the second filter is operable for differentially attenuating the first and second orthogonal polarization states allowing a determination whether the intensity pattern corresponds to the encoded information.
REFERENCES:
patent: 6870511 (2005-03-01), Lynch et al.
Boreman Glenn
Mullally Daniel E.
Tharp Jeffrey
Jetter & Associates, P.A.
Legasse Jr. Francis M
Luu Thanh X
University of Central Florida Research Foundation Inc.
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