Optical: systems and elements – Optical modulator – Light wave directional modulation
Patent
1998-09-25
2000-02-29
Epps, Georgia
Optical: systems and elements
Optical modulator
Light wave directional modulation
359298, 359237, 359315, 349196, 385 37, G02B 2608
Patent
active
060316586
ABSTRACT:
High speed low cost billion point optical scanner using a binary optical polarization sensitive cascaded architecture network having binary switchable optical plates for scanning in one dimension(x-direction), two dimensions(x and y directions) and three dimensions(x, y and z directions). The scanner has a fast microsecond beam switching speed and low control power and realizes high space bandwidth products of up to one billion points using minimum control signals and hardware. The binary switching optical plates are modules for the x, y, and z directions. For each of the directions, each module contains an active polarization switches and passive beam steering devices. The switches can be high speed flat panel thin film polarization switches such as ferroelectric liquid crystal devices or multiple quantum well binary polarization rotation devices or nematic liquid crystal(NLC) polarization rotator devices. The beam steering devices can be birefringent plates such as birefringent mode nematic liquid crystals(BM-NLC), diffractive optical elements(DOEs), polymer dispensed liquid crystals(PDLCs), and computer generated birefringent nanosecond fabricated structures.
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Epps Georgia
Spector David N.
Steinberger Brian S.
University of Central Florida
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