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. 12, 2008
Filed:
Dec. 06, 2004
James M. Cicchiello, Cary, IL (US);
Curtis J. Harkrider, Wheaton, IL (US);
Kenneth E. Kreischer, Barrington, IL (US);
David A. Gallagher, Arlington Heights, IL (US);
James M. Cicchiello, Cary, IL (US);
Curtis J. Harkrider, Wheaton, IL (US);
Kenneth E. Kreischer, Barrington, IL (US);
David A. Gallagher, Arlington Heights, IL (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A beam-steering element made of a more optically-active material, potassium tantalate niobate, with an improved diffraction efficiency, having a plurality of electrode layers and one electro-optic crystal layer interposed between every two adjacent electrode layers. Each electro-optic crystal layer and the electrode layer adjacent thereto have an aspect ratio of about 1:1. The electrode layers and the electro-optic crystal layers are interposed between two substrates. Preferably, the substrates are transparent to an incoming beam to be modulated by the electro-optic crystal layer.