Optical: systems and elements – Extended spacing structure for optical elements – Extension of tubular element adjustable
Reexamination Certificate
2005-01-12
2008-08-19
Allen, Stephone B. (Department: 2872)
Optical: systems and elements
Extended spacing structure for optical elements
Extension of tubular element adjustable
C359S490020, C359S489040, C359S506000
Reexamination Certificate
active
07414786
ABSTRACT:
A system for converting the polarization state of an optical beam which propagates along a path from an initial polarization state into an inhomogeneous polarization state includes a first isotropic material and a first anisotropic material. The first anisotropic material is positioned adjacent to the first isotropic material in a substantially transverse manner relative to the path of the optical beam. The first anisotropic material has a first alignment axis that produces one of a radially, azimuthally, and counter-rotationally polarized optical beam when substantially aligned with respect to a polarization axis of the optical beam.
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Biss David P.
Brown Thomas G.
Allen Stephone B.
Chapel Derek S.
Nixon & Peabody LLP
University of Rochester
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