Inductively powered gas discharge lamp

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Filament or electric heater in series with a discharge...

Reexamination Certificate

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Details

C315S115000, C315S114000, C315S046000, C315S064000

Reexamination Certificate

active

07622868

ABSTRACT:
An inductively powered gas discharge lamp including both a power coil and a heating coils associated with each filament. The heating coils enable the filaments to be preheated before the starting voltage is applied through the power coils. The inductive power coils and the inductive heater coils are contained within the lamp envelope, allowing the lamp to be entirely sealed. A method of dimming the lamp also is disclosed. The lamp is dimmed by both decreasing the power applied to the power coils and increasing the power applied to the heating coils so as to prevent the arc from extinguishing under lower voltage conditions.

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patent: 6917372 (2005-07-01), Yokoyama
patent: 6936967 (2005-08-01), Van Den Bogert
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patent: 2002/0067137 (2002-06-01), Okubo et al.
patent: 2003/0057866 (2003-03-01), Takahashi et al.
patent: 2003/0201731 (2003-10-01), Baarman
patent: 1422978 (2004-05-01), None
patent: 06325882 (1994-11-01), None

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