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. 17, 2013
Filed:
Dec. 19, 2012
North Carolina State University, Raleigh, NC (US);
Michael James Escuti, Cary, NC (US);
North Carolina State University, Raleigh, NC (US);
Abstract
In a method of fabricating an optical element, an alignment surface is photolithographically patterned using a birefringent mask having a holographic pattern therein to create an alignment condition in the alignment surface based on the holographic pattern. A layer is formed on the alignment surface such that local optical axes of the layer are oriented according to the alignment condition in the alignment surface. For example, the layer may be a liquid crystal layer having respective molecular axes aligned according to the alignment condition. Related fabrication methods and polarization gratings are also discussed.