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US 9,288,884 B2Granted
Discharge lamp lighting device, discharge lamp lighting method, and projector
AssigneeSeiko Epson Corporation
InventorsYoichi Nakagomi, Tetsuo Terashima
Life of this patent
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Abstract
A discharge lamp lighting method for controlling lighting of a discharge lamp includes varying an amount of generation (current value) of overshoot and undershoot generated in a waveform of a drive current that is applied when driving the discharge lamp, according to a magnitude of drive power supplied to the discharge lamp and a drive mode.
Claims20
A discharge lamp lighting device for controlling lighting of a discharge lamp, device comprising:
- a drive unit that drives the discharge lamp;
- and
- a control unit that controls the drive unit;
- wherein the control unit varies a current value of overshoot and undershoot generated in a waveform of a drive current that is applied when the drive unit drives the discharge lamp, at least according to a magnitude of drive power supplied to the discharge lamp.
1 more element
A discharge lamp lighting method for controlling lighting of a discharge lamp, the method comprising:
- varying a current value of overshoot and undershoot generated in a waveform of a drive current that is applied when driving the discharge lamp, at least according to a magnitude of drive power supplied to the discharge lamp.
Dependencies are inferred from the claim text.