Discharge lamp lighting device, discharge lamp lighting method, and projector
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United States of America Patent
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Jul 18, 2017
Grant Date -
Jul 9, 2015
app pub date -
Oct 10, 2014
filing date -
Oct 17, 2013
priority date (Note) -
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Abstract
A discharge lamp lighting device according to an aspect of the invention includes a resonance circuit unit connected to a discharge lamp, a power converting unit configured to convert direct-current power into alternating-current power and supply the alternating-current power to the discharge lamp via the resonance circuit unit, and a control unit configured to supply the alternating-current power having a first frequency for causing resonance of the resonance circuit unit and a second frequency different from the first frequency, to the discharge lamp in a lighting start period from a start of lighting of the discharge lamp to a steady lighting state of the discharge. The second frequency is equal to or higher than 100 kHz.
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