Device for lighting a high-pressure discharge lamp by...

Details Device for lighting a high-pressure discharge lamp by... Device for lighting a high-pressure discharge lamp by...

2005-11-08

2010-12-21

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Filament or electric heater in series with a discharge...

C315S224000, C315S246000, C315S291000, C315S2090SC

Reexamination Certificate

active

07855512

ABSTRACT:
The high-pressure discharge lamp lighting device of the invention includes a lighting circuit for supplying an alternating current to a high-pressure discharge lamp to cause lighting, the high-pressure discharge lamp having an arc tube in which a halogen material is enclosed and a pair of electrodes is disposed, and each electrode having a protuberance at a tip thereof. A frequency of the alternating current varies without dependency on operating data that varies as a lighting time of the high-pressure discharge lamp elapses.

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Japanese Application No. 2004-328199 Office Action dated Sep. 8, 2010, 2 pages.

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