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:
Nov. 05, 2002
Filed:
Nov. 12, 1999
Applicant:
Inventors:
Yongzhang Leng, Damascus, MD (US);
Brian P. Turner, Damascus, MD (US);
James E. Simpson, Gaithersburg, MD (US);
Assignee:
Fusion Lighting, Inc., Rockville, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/720 ; H01J 6/112 ;
U.S. Cl.
CPC ...
H01J 1/720 ; H01J 6/112 ;
Abstract
An electrodeless lamp includes a stationary bulb ( ) containing a fill for producing a discharge, the fill has a primary radiating material which ordinarily produces an unstable discharge in the absence of bulb rotation. The fill further includes an alkali metal in an amount sufficient to stabilize the discharge without bulb rotation. The alkali metal may be, for example, cesium bromide. Preferably, the fill is excited by a non-stationary electric field (E, E ) such as, for example, a circular polarized electric field.