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:
Dec. 08, 2020
Filed:
Jul. 30, 2015
North Carolina State University, Raleigh, NC (US);
Imagineoptix Corporation, Cary, NC (US);
Michael J. Escuti, Raleigh, NC (US);
D. Jason Kekas, Raleigh, NC (US);
Ravi K. Komanduri, Dulles, VA (US);
IMAGINEOPTIX CORPORATION, Durham, NC (US);
Abstract
An optical element includes a plurality of stacked birefringent sublayers, such as liquid crystal sublayers, configured to alter a direction of propagation of light passing therethrough according to the Bragg condition. The stacked birefringent sublayers respectively include local optical axes that vary along respective interfaces between adjacent ones of the stacked birefringent sublayers to define respective grating periods. The respective thicknesses of the stacked birefringent sublayers may be less than a wavelength of the light. Related apparatus and methods of operation are also discussed.