Discharge lamp lighting device, projector, and driving method of discharge lamp

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United States of America Patent

PATENT NO 8853961
APP PUB NO 20120043904A1
SERIAL NO

13209850

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In at least one embodiment of the disclosure, a discharge lamp lighting device includes a discharge lamp driving section that drives a discharge lamp and a control unit that controls the discharge lamp driving section. The control unit alternately performs a first-interval DC driving process and a first-interval AC driving process in a first interval, alternately performs a second-interval DC driving process and a second-interval AC driving process in a second interval other than the first interval, and changes a length of at least one of a period during which the first-interval DC driving process is performed and a period during which the second-interval DC driving process is performed so as to be shortened in a stepped manner within a predetermined sub-interval.

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Terashima, Tetsuo Azumino, JP 66 449

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