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:
Aug. 02, 2016
Filed:
Sep. 27, 2010
Michael Haacke, Aachen, DE;
Lars Dabringhausen, Baesweiler, DE;
Michael Haacke, Aachen, DE;
Lars Dabringhausen, Baesweiler, DE;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A lighting assembly () includes an electronic driver circuit () and a discharge lamp (). The discharge lamp () is driven with a steady-state average power of 20-30 W. It includes a discharge vessel () of a maximum inner dimension ID of less than 3 mm with two electrodes (). A discharge vessel filling comprises a rare gas and a metal halide composition provided in an amount per volume of the discharge vessel () of less than 13.2 μg/μl. Electrical energy is supplied as an alternating current Iwhere pulses (-) are superimposed. The pulses occur in a time interval of 20% of a half-cycle time before or after a polarity change of the alternating current I. During the pulses the current Ireaches the current value of at least 1.2 times the RMS value of the current I.