Optical: systems and elements – Lens – With graded refractive index
Reexamination Certificate
2008-01-29
2008-01-29
Stultz, Jessica T (Department: 2873)
Optical: systems and elements
Lens
With graded refractive index
C359S030000, C359S618000, C359S634000
Reexamination Certificate
active
07324286
ABSTRACT:
Non-mechanical optical beam steering and switching is produced by optically controlled liquid crystal spatial light modulator with angular magnification by high efficiency volume Bragg gratings recorded in a photosensitive PTR glass. Small angle beam deflection in a photoactive liquid crystal cell is produced by exposing it to a controlling beam from an external source of radiation with predetermined distribution of power density which causes predetermined spatial gradients of a refractive index in a liquid crystal cell and, therefore, refraction of a controlled beam which is made to propagate in the region with spatial gradient of the refractive index. Large angle beam deflection is produced by a volume Bragg grating with angular selectivity adjusted in such way that small angle scanning produced by optically controlled liquid crystal spatial light modulator results in change of diffraction efficiency from zero to 100% for switching the beam for two Bragg angles.
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Glebov Leonid B
Nersisyan Sarik
Rotar Vasile
Smirnov Vadim I
Tabirian Nelson
Law Offices of Brian S. Steinberger , P.A.
Steinberger Brian S.
Stultz Jessica T
University of Central Florida Research Foundation
Wood Phyllis K.
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