High-pressure discharge lamp

Details High-pressure discharge lamp High-pressure discharge lamp

2007-02-13

2007-02-13

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

C313S624000, C313S625000

Reexamination Certificate

active

10495955

ABSTRACT:
The invention relates to a high-pressure discharge lamp (1) provided with a discharge vessel (2) made of quartz glass which encloses a discharge space (3) having an ionizable filling and an electrode (4). The discharge vessel (2) is provided with a seal (5) which preferably encloses an Mo foil and forms a feedthrough for an electric conductor (6) to the electrode (4). At the location of the foil, the seal (5) has a gastight sealed cavity (10). According to the invention the cavity (10) is free of a capacitive coupling. This improves reliable ignition.

REFERENCES:
patent: 5905338 (1999-05-01), Verspaget et al.
patent: 6294870 (2001-09-01), Kawashima et al.
patent: WO 0077826 (2000-12-01), None

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