Lighting apparatus for discharge lamp

Details Lighting apparatus for discharge lamp Lighting apparatus for discharge lamp

2005-07-15

2009-06-16

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S2090SC, C315S360000

Reexamination Certificate

active

07548031

ABSTRACT:
In the transient electric power control of a discharge lamp containing no mercury or a small amount of mercury, a change value relating to a lamp voltage from the initial value thereof is detected. A control unit is provided to change the temporal change rate of electric power supplied to the discharge lamp during the transient time period in accordance with the increase of the change value or the time lapse.

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