Lamp with an improved lamp behaviour

Details Lamp with an improved lamp behaviour Lamp with an improved lamp behaviour

2005-07-01

2010-06-08

Patel, Ashok (Department: 2889)

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

C313S633000, C313S620000, C313S638000

Reexamination Certificate

active

07733026

ABSTRACT:
The invention relates to a Hg free high pressure discharge lamp having a quartz envelope and a halide filling, wherein the lamp comprises at least one electrode which comprises tungsten and ≧0 wt. % and ≦0.5 wt. % thorium and whereby the lamp comprises at least one Mo-containing lead-in wire and/or foil whereby the Mo containing wire and/or foil comprises TiO2and having a characteristic life time of ≧2500 h and ≦7500 h according to the EU Carmaker cycle test.

REFERENCES:
patent: 6483237 (2002-11-01), Eastlund et al.
patent: 7038385 (2006-05-01), Takagaki et al.
patent: 2003/0178940 (2003-09-01), Yoshida et al.
patent: 0275580 (1988-07-01), None
patent: 0570068 (1993-11-01), None
patent: 0647964 (1997-08-01), None
patent: 1156505 (2001-11-01), None
patent: 9634405 (1996-10-01), None
patent: 03056607 (2003-07-01), None
International Standard, Lamps for Road Vehicles—Performance Requirements, CEI IEC 60810, Third Edition May 2003.

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