Title:
METAL HALIDE LAMP WITH LEAD WIRE CONTAINING NICKEL
Document Type and Number:
WIPO Patent Application WO2004001791
Kind Code:
A3
Abstract:
Discharge lamp which includes a discharge vessel (arc tube)(12) enclosing a discharge space, the discharge vessel (arc tube)(12) including within the discharge space a metal halide ionizable material, first and second discharge electrode feedthroughs(6), and first and second current conductors (3) connected to the first and second discharge electrode feedthroughs (6) respectively. A wire (11) of a material that includes Ni or a Ni alloy;with an electrical resistivity at 25{C<10 ohms/mm2; a photoelectric emission work function > 4.0 eV; a thermionic emission work function > 4.0 eV; and a melting point > 1200 C is used.
Inventors:
TU JUNMING
Application Number:
PCT/IB2003/002614
Publication Date:
December 02, 2004
Filing Date:
June 10, 2003
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS CORP (US)
PHILIPS CORP (US)
International Classes:
H01J61/073; H01J1/02; H01J61/00; H01J61/30; H01J61/34; H01J61/36; H01J61/82; H01J61/88; (IPC1-7): H01J61/82; H01J61/34
Foreign References:
| US5023506A | 1991-06-11 | |||
| US6157131A | 2000-12-05 | |||
| GB1189422A | 1970-04-29 | |||
| US3234421A | 1966-02-08 | |||
| EP0220813A2 | 1987-05-06 | |||
| US4924133A | 1990-05-08 | |||
| US4025812A | 1977-05-24 |
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