发明名称 |
Discharge lamp starter, method for controlling the same, and projector |
摘要 |
In at least one embodiment of the disclosure a discharge lamp lighting apparatus includes a controller configured to control an AC conversion circuit to perform AC conversion control for controlling the timings at which a polarity of the discharge lamp driving AC current is reversed. The controller is configured to control the power control circuit to perform current control for controlling a magnitude of the DC current. The controller changes the accumulated energy supplied to each electrode of a discharge lamp in one cycle of the discharge lamp driving AC current in accordance with a periodic pattern. The periodic pattern includes a plurality of segmented periods during each of which the accumulated energy is maintained at a same level for a plurality of cycles of the discharge lamp driving AC current, and a level of the accumulated energy in at least two of the segmented periods differ from each other.
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申请公布号 |
US8008868(B2) |
申请公布日期 |
2011.08.30 |
申请号 |
US20090404340 |
申请日期 |
2009.03.16 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
YAMAUCHI KENTARO |
分类号 |
G05F1/00;H05B37/02;H05B39/04;H05B41/36 |
主分类号 |
G05F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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