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:
Feb. 22, 2011
Filed:
May. 17, 2006
Michael Haacke, Aachen, DE;
Michael Haacke, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A high-intensity discharge (HID) lamp comprising an inner bulb () with a discharge vessel () and an outer bulb (), especially for application in an automotive headlight unit is disclosed. A lamp design is proposed by which high thermal stresses and increased quartz temperatures during run-up and steady state operation of the lamp are avoided so that the light output and the lifetime of the lamp is improved. This is substantially achieved by a positioning of the inner and the outer bulb () such that a longitudinal axis of the inner bulb () is displaced in the operating position of the lamp above a longitudinal axis of the outer bulb () so that the distance between the discharge vessel () and the outer bulb () at the top side of the lamp is decreased and the distance between both at the bottom side is correspondingly increased.