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:
Apr. 20, 2010
Filed:
Aug. 04, 2004
Leo Gustaaf Joanna Emiel Marien, Turnhout, BE;
Nancy Jean Caruso, Turnhout, BE;
Leo Gustaaf Joanna Emiel Marien, Turnhout, BE;
Nancy Jean Caruso, Turnhout, BE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to a high-pressure discharge lamp with an outer envelope () in which a discharge vessel () is arranged around a longitudinal axis (). The discharge vessel encloses, in a gastight manner, a discharge space () provided with an ionizable filling. The discharge vessel has a first () and a second () mutually opposed neck-shaped portion through which a first () and a second () current-supply conductor, respectively, extend to a pair of electrodes () arranged in the discharge space (). The outer envelope () has a bulb-shaped portion () adjacent the discharge space with a wall thickness d. The remainder of the outer envelope has a wall thickness d. The ratio of dand dis in the range: Formula (I). Preferably, Formula (II), the bulb-shaped portion is formed in a mold. A simplified and compact high-pressure discharge lamp is provided by the invention.