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. 22, 2009
Filed:
Dec. 23, 2004
Bennie Josephus DE Maagt, Eindhoven, NL;
Leo Gustaaf Joanna Emiel Marien, Turnhout, BE;
Ronald Petrus Theodorus Kamp, Turnhout, BE;
Claudio Boffito, Nerviano, IT;
Bennie Josephus De Maagt, Eindhoven, NL;
Leo Gustaaf Joanna Emiel Marien, Turnhout, BE;
Ronald Petrus Theodorus Kamp, Turnhout, BE;
Claudio Boffito, Nerviano, IT;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A high-pressure discharge lamp has an outer envelope () in which a discharge vessel () is arranged enclosing a discharge space () with an ionizable filling. The discharge vessel has two mutually opposed neck-shaped portions () through which current supply conductors () extend to a pair of electrodes () in the discharge space. A lamp base () of electrically insulating material supports the discharge vessel. The lamp base also supports the outer envelope. The outer envelope with a volume equal to or less than 2 cc encloses the current supply conductors and is connected to the lamp base in a gas-tight manner. A getter () is provided in the outer envelope for pumping out residual nitrogen from the outer envelope after sealing off the discharge lamp prior to operation of the discharge lamp, the getter () comprising at least 2.5 mbar.ml nitrogen. Preferably, the getter comprises an alloy of zirconium and aluminum or of zirconium and cobalt.