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:
Apr. 09, 2013
Filed:
Jun. 18, 2008
Zeev Tamir, Haifa, IL;
Yacov Cohen, Haverhill, MA (US);
Zeev Tamir, Haifa, IL;
Yacov Cohen, Haverhill, MA (US);
TC View Ltd., Katzrin, IL;
Abstract
A directional filter device for controlling direction of maximal blocking of incident light, including: (a) a front polarizer; (b) a plurality of front electrodes; (c) a liquid crystal layer having a front surface for receiving light and a back surface for emitting light; (d) a plurality of back electrodes; (e) a back polarizer; and (f) circuitry for applying a voltage between said front electrodes and said back electrodes, wherein said circuitry is configured to apply voltage between front and back electrodes that do not face each other using voltage sequences that create electric fields at angles selected from a range of angles, which are not perpendicular to the front surface of the liquid crystal layer.