METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING A DISCHARGE LAMP
    3.
    发明申请
    METHOD AND CIRCUIT ARRANGEMENT FOR OPERATING A DISCHARGE LAMP 审中-公开
    用于操作放电灯的方法和电路布置

    公开(公告)号:WO2005062684A1

    公开(公告)日:2005-07-07

    申请号:PCT/IB2004/052833

    申请日:2004-12-16

    CPC classification number: H01J61/0732 H05B41/2928

    Abstract: A method and a circuit arrangement for operating a discharge lamp, in particular during the first hours of operation after lamp manufacture, are described. The method and the circuit arrangement are provided in particular for high-pressure gas discharge lamps (HID or high intensity discharge lamps or UHP or ultra high performance lamps). Furthermore, a lighting unit with a discharge lamp and such a circuit arrangement and a projection system with a projection display and such a lighting unit are described. Switching-over between various modes of operation with different operating frequencies serves to avoid that the burning voltage of the lamp drops into a region of a minimum voltage of a lamp driver unit below which the latter can no longer drive the lamp with its rated power or a desired power.

    Abstract translation: 描述了用于操作放电灯的方法和电路装置,特别是在灯制造之后的第一小时操作期间。 该方法和电路装置特别用于高压气体放电灯(HID或高强度放电灯或UHP或超高性能灯)。 此外,描述了具有放电灯和这种电路装置的照明单元以及具有投影显示器和这种照明单元的投影系统。 在不同操作频率的各种操作模式之间的切换用于避免灯的燃烧电压下降到灯驱动器单元的最小电压的区域中,在该区域中,后者不能以其额定功率驱动灯,或者 所需的力量

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