The driving method of lighting apparatus for discharge lamp, projector and discharge lamp

The driving method of lighting apparatus for discharge lamp, projector and discharge lamp

  • CN 101,959,355 A
  • Filed: 07/14/2010
  • Published: 01/26/2011
  • Est. Priority Date: 07/14/2009
  • Status: Active Application
First Claim
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1. lighting apparatus for discharge lamp comprises:

  • Provide drive current to drive the discharge lamp drive division of above-mentioned discharge lamp to the discharge lamp that comprises the pair of electrodes that heat condition is different;

    AndControl the control part of above-mentioned discharge lamp drive division;

    Wherein, above-mentioned control part alternately carries out the processing of the 1st DC driven in the 1st interval and the 1st AC driving is handled, and is alternately carrying out processing of the 2nd DC driven and the processing of the 2nd AC driving with the above-mentioned the 1st interval the 2nd different interval;

    In above-mentioned the 1st DC driven is handled, control as above-mentioned drive current with the 1st direct current that the 1st polar component constitutes providing since the 1st polarity;

    In above-mentioned the 1st AC driving is handled,, the 1st alternating current that repeats the 1st polar component and the 2nd polar component with the 1st frequency controls as above-mentioned drive current to being provided;

    In above-mentioned the 2nd DC driven is handled, control as above-mentioned drive current with the 2nd direct current that the 2nd polar component constitutes providing since the 2nd polarity;

    In above-mentioned the 2nd AC driving is handled,, the 2nd alternating current that repeats the 1st polar component and the 2nd polar component with the 2nd frequency controls as above-mentioned drive current to being provided;

    With above-mentioned the 1st frequency and above-mentioned the 2nd frequency is that different values is carried out above-mentioned the 1st AC driving processing and above-mentioned the 2nd AC driving is handled.

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