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. 31, 2005
Filed:
Aug. 24, 2000
Applicants:
Wolfgang Dultz, Frankfurt am Main, DE;
Dirk Ganzke, Darmstadt, DE;
Wolfgang Haase, Reinheim, DE;
Eugene Pozhidaev, Moskau, RU;
Inventors:
Wolfgang Dultz, Frankfurt am Main, DE;
Dirk Ganzke, Darmstadt, DE;
Wolfgang Haase, Reinheim, DE;
Eugene Pozhidaev, Moskau, RU;
Assignee:
Deutsche Telekom AG, Bonn, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K019/02 ;
U.S. Cl.
CPC ...
Abstract
In order to substantially reduce temperature-dependent influences and attendant long switching times in the case of an optical liquid crystal modulator having at least one ferroelectric liquid crystal and in a method for operating an optical liquid crystal modulator, the ferroelectric liquid crystals are provided to have a DHF mode and to exhibit an operating range of an electric field of more than 20 V/μm at the location of the liquid crystal.