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. 10, 2014
Filed:
Jul. 05, 2011
Applicants:
Andrew Simon Neate, Near Leighton Buzzard, GB;
Barry Preston, Melton Mowbray, GB;
Inventors:
Andrew Simon Neate, Near Leighton Buzzard, GB;
Barry Preston, Melton Mowbray, GB;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 7/46 (2006.01); H01P 1/26 (2006.01); H01J 25/50 (2006.01); H05B 41/16 (2006.01); H01J 17/16 (2012.01);
U.S. Cl.
CPC ...
Abstract
A lucent crucible of a Lucent Waveguide Microwave Plasma Light Source (LWMPLS) comprising a Light Emitting Resonator (LER) in form of a crucible () of fused quartz which has a central void () having microwave excitable material () within it. In one example, the void is 4 mm in diameter and has a length (L) of 21 mm. The LWMPLS is operated at a power (P) of 280 W and thus with a plasma loading P/L of 133 w/cm and a wall loading of 106 w/cm2. The lamp is thus operated with a high efficiency—in terms of lumens per watt—while having a reasonable lifetime.