发明名称 |
DISCHARGE LAMP LIGHTING DEVICE, DISCHARGE LAMP LIGHTING METHOD, AND PROJECTOR DEVICE |
摘要 |
A discharge lamp lighting device includes a discharge lamp, a resonant circuit section, a power conversion section, and a control section. The resonant circuit section is connected to the discharge lamp. The power conversion section is adapted to convert direct-current power into alternating-current power and then supply the discharge lamp with the alternating-current power via the resonant circuit section. The control section is adapted to change a frequency of the alternating-current power alternatingly between a first frequency and a second frequency different from the first frequency in a lighting start period until the discharge lamp reaches a stationary lighting state. The control section is adapted to change the first frequency toward a frequency causing a resonance of the resonant circuit in a stepwise manner. The second frequency is lower than the first frequency. |
申请公布号 |
US2015271901(A1) |
申请公布日期 |
2015.09.24 |
申请号 |
US201514732503 |
申请日期 |
2015.06.05 |
申请人 |
Seiko Epson Corporation |
发明人 |
Saito Osamu;Morita Yasuaki |
分类号 |
H05B41/38;G03B21/20;H05B41/282 |
主分类号 |
H05B41/38 |
代理机构 |
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代理人 |
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主权项 |
1. A discharge lamp lighting device comprising:
a resonant circuit section connected to a discharge lamp; a power conversion section adapted to convert direct-current power into alternating-current power, and then supply the discharge lamp with the alternating-current power via the resonant circuit section; and a control section adapted to change a frequency of the alternating-current power alternatingly between a first frequency and a second frequency different from the first frequency in a lighting start period until the discharge lamp reaches a stationary lighting state, wherein the control section is adapted to change the first frequency toward a frequency causing a resonance of the resonant circuit in a stepwise manner, and the second frequency is lower than the first frequency. |
地址 |
Tokyo JP |