Electric lamp and discharge devices – With gas or vapor – Having electrode lead-in or electrode support sealed to...
Patent
1996-03-11
1998-04-21
Patel, Ashok
Electric lamp and discharge devices
With gas or vapor
Having electrode lead-in or electrode support sealed to...
313624, H01J 1716
Patent
active
057421242
ABSTRACT:
The invention relates to a high-pressure discharge lamp provided with a discharge vessel which encloses a discharge space, which has a ceramic wall, and which is sealed at one end by means of a projecting ceramic plug which encloses with clearance a current supply conductor to an electrode arranged in the discharge vessel and is connected to said conductor adjacent an end facing away from the discharge space in a gastight manner by means of a melting-ceramic connection. According to the invention, at least an end portion of the ceramic plug situated near the end facing away from the discharge space is impermeable to light.
REFERENCES:
patent: 4034252 (1977-07-01), McVey
patent: 4475061 (1984-10-01), Van De Weijer et al.
patent: 4940433 (1990-07-01), Jacobs et al.
patent: 5424608 (1995-06-01), Juengst et al.
Kees Antonie H. M.
Kessels Martinus J. M.
Van Lierop Fransiscus H.
Egbert, III Walter M.
Patel Ashok
U.S. Phillips Corporation
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