Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2010-09-01
2011-12-13
Mack, Ricky (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
Reexamination Certificate
active
08077373
ABSTRACT:
The present invention provides composite optical elements including a photochromic linear polarizing element and a birefringent layer such that composite optical element circularly or elliptically polarizes transmitted radiation. The photochromic linear polarizing element is formed from (i) an at least partially ordered polymeric sheet; and (ii) a reversible photochromic-dichroic material that is at least partially aligned with the polymeric sheet and has an average absorption ratio of at least 1.5 in the activated state. The birefringent layer includes a polymeric coating or a polymeric sheet connected to the photochromic linear polarizing element.
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Schadt, Martin “Optics and Applications of Photo-A
Blackburn Forrest R.
Foller Peter C.
Furar Elizabeth
Kumar Anil
Altman Deborah M.
Mack Ricky
Mallak Frank P.
Tra Tuyen
Transitions Optical Inc.
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