Title:
HIGH-PRESSURE GAS DISCHARGE LAMP
Document Type and Number:
WIPO Patent Application WO2005024894
Kind Code:
A8
Abstract:
A high-pressure gas discharge (HID, high intensity discharge) lamp is described, having a discharge vessel (1) that contains a metal that is applied at least to parts of those regions of the feedthroughs and/or walls of the discharge vessel (1) at which condensation of ingredients of the gas filling may occur as a result of a temperature sink that occurs when the lamp is in a state of operation. In this way, it is possible to at least largely prevent not only chemical interactions between ingredients of the gas filling (particularly the metal halides) and the relevant regions of the feedthroughs or walls at which, due to the lower temperature of these regions, the ingredients condense, but also losses of ingredients of this kind from the gas filling. This in turn means that there is no risk of any damage to the lamp or of any degradation of its lumen maintenance.
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Inventors:
BORN MATTHIAS (DE)
NIEMANN ULRICH (DE)
NIEMANN ULRICH (DE)
Application Number:
PCT/IB2004/051657
Publication Date:
April 13, 2006
Filing Date:
September 01, 2004
Export Citation:
Assignee:
PHILIPS INTELLECTUAL PROPERTY (DE)
KONINKL PHILIPS ELECTRONICS NV (NL)
BORN MATTHIAS (DE)
NIEMANN ULRICH (DE)
KONINKL PHILIPS ELECTRONICS NV (NL)
BORN MATTHIAS (DE)
NIEMANN ULRICH (DE)
International Classes:
H01J61/26; H01J61/82; (IPC1-7): H01J61/04; H01J61/35; H01J61/24
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