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:
Aug. 27, 2013
Filed:
Nov. 19, 2012
North Carolina State University, Raleigh, NC (US);
Michael J. Escuti, Cary, NC (US);
Chulwoo Oh, Los Angeles, CA (US);
Ravi Komanduri, Raleigh, NC (US);
North Carolina State University, Raleigh, NC (US);
Abstract
An optical element includes a first and second stacked birefringent layers. The first birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a first thickness between opposing faces of the first birefringent layer to define a first twist angle. The second birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a second thickness between opposing faces of the second birefringent layer to define a second twist angle different than the first twist angle. Related devices and fabrication methods are also discussed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile