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. 23, 2017
Filed:
Jan. 28, 2014
The United States of America As Represented BY the Secretary of the Army, Washington, DC (US);
Beam Engineering for Advanced Measurements Co., Orlando, FL (US);
Nelson V. Tabirian, Winter Park, FL (US);
Sarik R. Nersisyan, Winter Park, FL (US);
Brian R. Kimball, Shrewsbury, MA (US);
Diane M. Steeves, Franklin, MA (US);
Beam Engineering for Advanced Materials Co., Orlando, FL (US);
The United States of America as Represented by the Secretary of the Army, Washington, DC (US);
Abstract
A cycloidal diffractive waveplate () comprising first and second substrate layers (), a liquid crystal layer (C,H) provided between the first and second substrate layers, and transparent positive electrodes () and transparent negative electrodes () provided on the first substrate layer. The liquid crystal layer has a diffractive state (C) in which the optical axes of the liquid crystal molecules are periodically rotated across a plane of the waveplate and a non-diffractive state (H) in which the optical axes of the liquid crystal molecules are all orientated in the same direction in the plane of the waveplate. The electrodes () are arranged in an alternating series, such that when an electric voltage is applied to the electrodes an electric field is produced in the plane of the waveplate and the liquid crystal layer is switched from the diffractive state to the non-diffractive state. A method of manufacturing the cycloidal diffractive waveplate is also provided.