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:
Jun. 01, 2010
Filed:
Jan. 22, 2008
Roger Clarke, Cambridge, GB;
Allan Carmichael, Orwell, GB;
Joshua N. Haddock, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
Roger Clarke, Cambridge, GB;
Allan Carmichael, Orwell, GB;
Joshua N. Haddock, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
PixelOptics, Inc., Roanoke, VA (US);
Abstract
Embodiments of the present invention relate to a cholesteric liquid crystalline material which may be usable in an electro-active element for providing fail safe operation, polarization insensitivity, low electrical power consumption requirements, and a small number of electrical connections. The cholesteric liquid crystalline material may be usable in an electro-active element for providing a diffractive efficiency or focusing efficiency above 90% in an activated state of the electro-active element and a diffractive efficiency or focusing efficiency below 10% in a deactivated state of the electro-active element.