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    • 7. 发明申请
    • EVALUATION SYSTEM, LIGHTING DEVICE, AND IMAGE DISPLAY DEVICE
    • 评估系统,照明设备和图像显示设备
    • US20100097069A1
    • 2010-04-22
    • US12443174
    • 2007-10-02
    • Jun SakaguchiHiroki OgawaYoshiki KitaharaKatsuhiro OnoKiyoshi TakahashiMinoru Ozasa
    • Jun SakaguchiHiroki OgawaYoshiki KitaharaKatsuhiro OnoKiyoshi TakahashiMinoru Ozasa
    • G01R31/00
    • G03B21/2026G03B21/2053H01J61/86H05B41/2928
    • An image display device accurately evaluates the possibility of problems occurring due to the state of impure gas inside a discharge envelope in a high pressure discharge lamp. The image display device includes the high voltage discharge lamp and an evaluation unit (51) for evaluating the possibility of problems occurring due to the state of impure gas. The evaluation unit (51) includes a high voltage pulse generator (57) that generates a high voltage pulse for breaking insulation in the high pressure lamp, a constant current generator (58) that generates a constant current for illuminating the high pressure discharge lamp in a glow discharge state, a lamp voltage measurer (59) that measures lamp voltage during illumination in the glow discharge state, an LED (63), and a controller (65). When the lamp voltage measured by the lamp voltage measurer (59) is a predetermined value or higher, the controller (65) judges that the possibility of problems occurring in the high pressure lamp is high, and lights the LED (63).
    • 图像显示装置准确地评估由于在高压放电灯中的放电外壳内的不纯气体的状态而发生问题的可能性。 图像显示装置包括高压放电灯和用于评估由于不纯气体的状态而发生问题的可能性的评估单元(51)。 评估单元(51)包括产生用于断开高压灯绝缘的高电压脉冲的高压脉冲发生器(57),产生用于照亮高压放电灯的恒定电流的恒流发生器(58) 辉光放电状态的灯电压测量器(59),用于在辉光放电状态下照明期间的灯电压的灯电压测量器(59),LED(63)和控制器(65)。 当由灯电压测量器(59)测量的灯电压是预定值或更高时,控制器(65)判断在高压灯中出现问题的可能性高,并点亮LED(63)。