Discharge lamp driving device, projector, and discharge lamp driving method
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United States of America Patent
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Apr 25, 2017
Grant Date -
Sep 15, 2016
app pub date -
Mar 1, 2016
filing date -
Mar 9, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
In an aspect of a discharge lamp driving device, a control unit performs first discharge lamp driving in which a first control and a second control are performed, and a second discharge lamp driving in which a third control and a fourth control are performed, a ratio of a DC current in the second control is higher than a ratio of the DC current in the first control, a ratio of the DC current in the fourth control is higher than a ratio of the DC current in the third control and is higher than the ratio of the DC current in the second control, and the control unit performs a transition from the second discharge lamp driving to the first discharge lamp driving in a case where an inter-electrode voltage is lower than a first reverse transition voltage.
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