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    • 10. 发明申请
    • METHOD OF LIGHTING HIGH PRESSURE MERCURY LAMP, LIGHTING DEVICE FOR THE SAME, LAMP SYSTEM AND PROJECTION DISPLAY UNIT
    • 高压汞灯照明方法及其照明装置,灯系统及投影显示装置
    • US20090278469A1
    • 2009-11-12
    • US12091167
    • 2006-11-02
    • Go YamadaSyunsuke OnoTsuyoshi Ichibakase
    • Go YamadaSyunsuke OnoTsuyoshi Ichibakase
    • H05B41/36
    • H05B41/2886G03B21/2026G03B21/2053H05B41/38Y02B20/202
    • An object of the present invention is to provide a lighting method and the like that can prevent a lamp temperature of each individual high-pressure mercury lamp from being beyond a proper temperature range of a halogen cycle. The lighting method maintains a discharge of the high-pressure mercury lamp that has a function of the halogen cycle. The control is performed as follows. From when the high-pressure mercury lamp is lighted up to when a lamp voltage Vla reaches a first voltage value V1, a constant current control is performed. When the lamp voltage Vla reaches the first voltage value V1, the constant current control is switched to a constant power control which is performed at a first power value W1. While the discharge of the lamp is maintained, when the lamp voltage Vla reaches a voltage value (second voltage value V2) at which a state of the halogen cycle deviates from a proper state, the constant power control is performed by reducing the first power value W1 to a second power value W2.
    • 本发明的目的是提供一种可以防止每个单独的高压汞灯的灯温度超出卤素循环的适当温度范围的照明方法等。 照明方法保持具有卤素循环功能的高压汞灯的放电。 控制如下执行。 从高压汞灯点亮到灯电压Vla达到第一电压值V1时,进行恒定电流控制。 当灯电压Vla达到第一电压值V1时,将恒定电流控制切换到以第一功率值W1执行的恒功率控制。 当保持灯的放电时,当灯电压Vla达到卤素循环的状态偏离适当状态的电压值(第二电压值V2)时,通过降低第一功率值来执行恒定功率控制 W1到第二功率值W2。