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. 04, 2002
Filed:
Jul. 22, 1998
Robert Espinosa, Campbell, CA (US);
Other;
Abstract
A device for generating electromagnetic radiation including a cathode and an anode. The output port that is integral with the cathode is an electron emitting sheet of material having a low work function for emitting electrons and for a given thickness has a large transmissivity for transmitting radiation. The anode has a target configuration capable of emitting electromagnetic radiation when irradiated by an electron beam. The cathode sheet is supported by a support layer that is selected to be transmissive to the electromagnetic radiation when the cathode sheet must be thin enough to transmit the radiation but is not thick enough to be self supporting. When the support layer is an insulator, electrical connection is made directly to the cathode sheet or to a conducting layer interposed between the cathode sheet and support layer.