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:
Nov. 17, 2015
Filed:
Jun. 10, 2010
Applicants:
Dean R. Evans, Beavercreek, OH (US);
Gary Cook, Beavercreek, OH (US);
Inventors:
Dean R. Evans, Beavercreek, OH (US);
Gary Cook, Beavercreek, OH (US);
Assignee:
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/135 (2006.01);
U.S. Cl.
CPC ...
G02F 1/135 (2013.01); G02F 1/1354 (2013.01);
Abstract
An optical filter or valve comprises autonomously tunable liquid crystal filters in which photoactivated materials such as a photoconductive and photovoltaic substrates or films are used to produce or control application of an electric field to a liquid crystal material to tune the liquid crystal material to the wavelength of the incident light or radiation that is illuminating the filter thereby enabling the filter to automatically and autonomously filter the incident light or radiation.