Tungsten Electrode with Emitter
US 20060O87242A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2006/0087242 A1 Scholl et al. (43) Pub. Date: Apr. 27, 2006 (54) LOW-PRESSURE GAS DISCHARGE LAMP Publication Classification WITH ELECTRON EMITTER SUBSTANCES SMILAR TO BATO3 (51) Int. Cl. HOI. I7/04 (2006.01) (76) Inventors: Robert Peter Scholl, Roetgen (DE); HOI. 6L/04 (2006.01) Rainer Hilbig, Aachen (DE); Bernd (52) U.S. Cl. ..................... 313/633; 313/311; 313/346 R Rausenberger, Aachen (DE) Correspondence Address: (57) ABSTRACT PHILIPS INTELLECTUAL PROPERTY & A low-pressure gas discharge lamp is described, which is STANDARDS equipped with a gas-discharge vessel containing an inert gas P.O. BOX 3 OO1 filling as the buffer gas and an indium, thallium and/or BRIARCLIFF MANOR, NY 10510 (US) copper halide, and with electrodes and with means for Appl. No.: 10/526,923 generating and maintaining a low-pressure gas discharge, (21) which has as the electron emitter Substance a compound (22) PCT Fed: Aug. 29, 2003 selected from the group of ABO or ABO, ACOs, or ADO, wherein: A=an alkaline earth element or a mix (86) PCT No.: PCT/BO3/O3948 ture of several different alkaline earth elements, B=cerium, titanium, Zirconium, hafnium, or a mixture of these ele (30) Foreign Application Priority Data ments, C=vanadium, niobium, tantalum, or a mixture of these elements, D=Scandium, yttrium, lanthanum, a rare Sep. 12, 2002 (DE)..................................... 102-42-241.9 earth element, or a mixture of these elements. tungsten electrode With emitter discharge chamber with InBr Or similar Substances Patent Application Publication Apr.
[Show full text]