DISCHARGE LAMP WITH DISTORTION REDUCED DISCHARGE VESSEL

WIPO Patent Application WO/2011/045696

A3

A discharge lamp (1) is provided with a discharge vessel (2) comprising a discharge vessel wall made at least partly of a transparent ceramic material, said dis¬ charge vessel wall enclosing a discharge chamber (3) with opposing first (11) and second ends (12), a filling, provided in said discharge chamber (3), a first electrode (7) comprising a first projecting end (8) and a second electrode (5) comprising a second projecting end (6). The first electrode (7) is arranged to project into the chamber (3) from the first end (11) and the second electrode (5) is arranged to project into the chamber (3) from the second end (12). The discharge chamber wall comprises at least one joining seam (4), resulting from a joining of at least two parts (2a, 2b) of ceramic material. The joining seam (4) is located in the discharge chamber wall at a position closer to the first end (11) of the discharge chamber (3) than the first projecting end (8), so that the output beam of the lamp (1) is not impaired by the joining seam (4).

KUEPPER LUKAS (DE)
VOS THEODORUS P C M (NL)

PCT/IB2010/054336

June 09, 2011

September 27, 2010

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KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS INTELLECTUAL PROPERTY (DE)
KUEPPER LUKAS (DE)
VOS THEODORUS P C M (NL)

H01J61/36; H01J9/26; H01J61/02; H01J61/30

WO2004049391A2	2004-06-10
WO2009067289A1	2009-05-28
WO2008095771A2	2008-08-14
WO2007078574A1	2007-07-12

US5810635A	1998-09-22
EP2077575A2	2009-07-08

BEKKERS, Joost et al. (AE Eindhoven, NL)

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