Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Patent
1993-09-01
1995-06-13
Horabik, Michael
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
313624, 313625, 313634, 313331, H01J 6130
Patent
active
054246091
ABSTRACT:
A high-pressure discharge lamp of the invention includes a ceramic discharge vessel (10) in which a first and a second electrode (40a, 40b) are arranged and which encloses a discharge space (11 ) which is provided with a filling containing a metal halide. The discharge vessel (10) has a central zone (20) between the electrodes (40a, 40b) and a first and a second cylindrical end zone (30a, 30b) which each surround a current supply conductor (50a, 50b) connected to a respective electrode (40a, 40b). At least the first end zone (30a) has a diameter smaller than the smallest diameter of the central zone (20). The current supply conductor (50a) through the first end zone (30a) has a halide resistant portion (51a) which faces the discharge space (11) and a portion (52a) permeable to hydrogen and oxygen and facing away from the discharge space (11). The halide resistant portion (51a) extends through the first end zone (30a) over a distance that is at least the inner diameter D of the first end zone (30a) augmented by 2 mm. Furthermore, the current supply conductor (50b) through the second end zone (30b) has a halide resistant portion (51b) which faces the discharge space (11). The construction allows for a sufficient reduction of the amount of hydrogen and oxygen in the discharge vessel (10), while corrosive attack of the current supply conductors (50a, 50b) by halides is prevented.
REFERENCES:
patent: 3363133 (1968-01-01), Harris et al.
patent: 4409517 (1983-10-01), Van Der Sande et al.
patent: 4625149 (1986-11-01), Danno et al.
patent: 4766347 (1988-08-01), Janssen et al.
patent: 4780646 (1988-10-01), Lange
patent: 4864191 (1989-09-01), Van De Weiger et al.
Dielis Harald R.
Geven Andreas S. G.
Renardus Max L. P.
Seinen Peter A.
Stoffels Jan A. J.
Horabik Michael
Patel N. D.
U.S. Philips Corporation
Wieghaus Brian J.
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