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. 24, 2013
Filed:
May. 13, 2011
Andrew Simon Neate, Aylesbury, GB;
Andrew Simon Neate, Aylesbury, GB;
Other;
Abstract
A lamp comprises a light source in the form of a light emitting resonator, a magnetronand a stub tuner. A reflectoris fitted at the junction of the light source and the stub tuner, for directing the light in a generally collimated beam. The light emitting resonator comprises an enclosureformed of inner and outer envelopesof quartz. These are circular cylindrical tubes, with respective end plates. A tungsten wire mesh, of a mesh size to exhibit a ground plane to microwaves within the resonator, is sandwiched between the tubes and the end plates respectively. Each envelope, comprised of its tube and end plates is hermetic. An earth connection' extends from the mesh to the outside of the envelope. The length axially of the enclosure between the wire mesh sandwiched between the end plates is λ/2 for the operating microwave frequency. At one end of the enclosure, a molybdenum drive connectionextends to a tungsten disc. This is arranged transverse the axis A of the enclosure at 1/16λ from the mesh at its end of the enclosure. The enclosure is filled with excitable plasma material, such as a dose of metal halide in a rare earth gas. The disc acts as antenna and is driven by the magnetron, via the matching circuit