Light source, projector, and method for driving light source

Details Light source, projector, and method for driving light source Light source, projector, and method for driving light source

2011-08-16

2011-08-16

Cho, James (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S297000, C315S247000

Reexamination Certificate

active

07999490

ABSTRACT:
A light source includes an arc tube having a first electrode and a second electrode that emit light by discharge between the electrodes, and a driving unit that supplies a current between the first electrode and the second electrode and can change at least a waveform of frequency and waveform of the supplied current. The driving unit can perform lighting drive of the arc tube, using a driving waveform formed by combining a first lighting waveform having a maximum current value at a part other than a half-cycle rear end of the waveform and a second lighting waveform having a maximum current value at the half-cycle rear end of the waveform.

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