The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2022
Filed:
Feb. 28, 2019
Gary Sharp Innovations, Llc, Boulder, CO (US);
Gary D. Sharp, Boulder, CO (US);
GARY SHARP INNOVATNONS, LLC, Boulder, CO (US);
Abstract
A device for manipulating the polarization of light which includes a first retarder-stack (Stack) that converts the polarization of input light from a first polarization basis vector (PBV) to a second polarization basis vector (PBV), a second retarder-stack (Stack) that returns the polarization of light from PBVto PBV, and one or more optically functional layers between Stackand Stack. Stackhas a plurality of layers, wherein the number of layers, retardation values, and orientations of layers in Stackare selected to produce a PBVthat is substantially spectrally-uniform over a prescribed range of wavelengths. PBVis a non-trivial eigen-polarization of combined Stackand Stack. Stackhas a plurality of layers and Stackis arranged in series with Stack. Alternatively, instead of two different stacks, a reflector may be used to produce a return pass through Stack