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. 27, 2012
Filed:
Sep. 18, 2009
Gregg Hollingsworth, Tempe, AZ (US);
Marc Devincentis, Palo Alto, CA (US);
Anthony D. Mcgettigan, Santa Rosa, CA (US);
Sandeep Mudunuri, Sunnyvale, CA (US);
Naresh Murthy, Monte Sereno, CA (US);
Dan O'hare, Livermore, CA (US);
Gregg Hollingsworth, Tempe, AZ (US);
Marc DeVincentis, Palo Alto, CA (US);
Anthony D. McGettigan, Santa Rosa, CA (US);
Sandeep Mudunuri, Sunnyvale, CA (US);
Naresh Murthy, Monte Sereno, CA (US);
Dan O'Hare, Livermore, CA (US);
Luxim Corporation, Sunnyvale, CA (US);
Abstract
An electrodeless plasma lamp and a method of controlling operation of a plasma lamp are provided. The plasma lamp may a power source to provide radio frequency (RF) power and a lamp body to receive the RF power from a feed. The lamp body may comprise a dielectric material having a dielectric constant greater than 2 and bulb is provided that contains a fill that forms a plasma that emits light when at least a portion of the RF power is coupled to the fill. A light guide directs light from the bulb to a photosensor that is shielded from light output from a front side of the lamp body. The lamp includes a drive circuit to control operation of the lamp based on a level of light detected by the photosensor.