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:
Dec. 11, 2012
Filed:
Jul. 04, 2005
Harry J. Coles, Cambridge, GB;
Marcus J. Coles, Cambridge, GB;
Benjamin J. Broughton, Cambridge, GB;
Stephen M. Morris, Cambridge, GB;
Harry J. Coles, Cambridge, GB;
Marcus J. Coles, Cambridge, GB;
Benjamin J. Broughton, Cambridge, GB;
Stephen M. Morris, Cambridge, GB;
Cambridge Enterprise Limited, Cambridge, GB;
Abstract
A device for controlling the polarization state of transmitted light comprises first and second cell walls enclosing a layer of a chiral liquid crystal material. The material has a uniformly orientated helical axis in the absence of an applied field, and electrodes for applying an electric field substantially normal to the helical axis. An applied electric field flexoelectrically couples to the molecules, causing distortion of the helical structure and hence changes the bulk birefringence of the cell.