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:
Oct. 11, 2011
Filed:
Dec. 12, 2005
Pierre Legagneux, Le Mesnil Saint Denis, FR;
Laurent Gangloff, Gif Sur Yvette, FR;
Eric Minoux, Orsay, FR;
Jean-philippe Schnell, Paris, FR;
Frederic Andre, Clamart, FR;
Dominique Dieumegard, Mareil Marly, FR;
Pierre Legagneux, Le Mesnil Saint Denis, FR;
Laurent Gangloff, Gif Sur Yvette, FR;
Eric Minoux, Orsay, FR;
Jean-Philippe Schnell, Paris, FR;
Frederic Andre, Clamart, FR;
Dominique Dieumegard, Mareil Marly, FR;
Thales, , FR;
Abstract
The invention relates to an optically-controlled field-emission cathode, comprising a substrate () having at least one conducting surface () and at least one conducting emitter element () in the vicinity of a conducting surface, characterized in that it also comprises at least one photoconducting element () electrically connected in series between at least one emitter element and a conducting surface of the substrate. Another subject of the invention is an amplifier tube comprising such a cathode. The application is for Vacuum tubes, in particular for microwave amplification, with a view for example to applications in telecommunications.