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    • 1. 发明授权
    • High pressure lamp with lamp flicker suppression and lamp voltage control
    • 高压灯,带灯闪烁抑制和灯电压控制
    • US07443103B2
    • 2008-10-28
    • US11166315
    • 2005-06-24
    • Jianwu LiAlan G. ChalmersViktor K. VargaTimothy B. GurinGary R. AllenAnjali KotkundeJames C. McNamara
    • Jianwu LiAlan G. ChalmersViktor K. VargaTimothy B. GurinGary R. AllenAnjali KotkundeJames C. McNamara
    • H05B41/36
    • H05B41/3928Y02B20/202Y10S315/07
    • A method and system to supply current to a high pressure lamp is provided, the method and system comprising an alternating lamp current waveform with a half cycle mean amplitude I1 and a half cycle time duration T, a current pulse waveform including at least one current pulse with a half cycle mean amplitude I2 and at least one current pulse occurring after the trailing edge of a half cycle of the alternating lamp current, the pulse having a half cycle duration of Tp. These waveforms are combined to generate a current waveform including a current pulse waveform, the current pulse waveform starting after a time delay Td from the trailing edge of a half cycle of the alternating lamp current waveform, the time duration Tp of the at least one current pulse lasting less than the remaining time before the leading edge of the second half cycle of the alternating lamp current waveform. The combined current waveform supplies current to a high pressure lamp and produces a cone shaped tip protrusion which reduces lamp flicker.
    • 提供了一种向高压灯提供电流的方法和系统,该方法和系统包括具有半周期平均振幅I 1和半周期持续时间T的交替灯电流波形,包括至少一个电流的电流脉冲波形 脉冲具有半周期平均幅度I 2和在交流灯电流的半周期的后沿之后出现的至少一个电流脉冲,脉冲具有Tp的半周期持续时间。 这些波形被组合以产生包括电流脉冲波形的电流波形,从交流灯电流波形的半周期的后沿开始的时间延迟Td之后的当前脉冲波形,至少一个电流的持续时间Tp 脉冲持续时间小于交流灯电流波形的第二个半周期的前沿之前的剩余时间。 组合电流波形将电流提供给高压灯,并产生锥形尖端突起,减少灯闪烁。