Discharge lamp driving device, light source device, projector, and discharge lamp driving method
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United States of America Patent
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May 10, 2016
Grant Date -
Sep 17, 2015
app pub date -
Mar 3, 2015
filing date -
Mar 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A discharge lamp driving device includes: a discharge lamp driving unit that supplies a driving current to the discharge lamp; and a control unit that controls the discharge lamp driving unit. The driving current having driving periods is supplied, the driving period including: a mixing period which alternately has an AC period in which an alternating current is supplied and a first DC period in which a direct current is supplied, a second DC period which is provided immediately after the mixing period and in which a direct current having a polarity which is the same as that of the direct current in the first DC period is supplied, and a third DC period which is provided immediately after the second DC period and in which a direct current having a polarity opposite to that of the direct current in the second DC period is supplied.
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