Discharge lamp lighting apparatus and projector
    21.
    发明授权
    Discharge lamp lighting apparatus and projector 有权
    放电灯照明设备和投影机

    公开(公告)号:US07944150B2

    公开(公告)日:2011-05-17

    申请号:US12213583

    申请日:2008-06-20

    申请人: Tetsuji Hirao

    发明人: Tetsuji Hirao

    IPC分类号: H05B37/02

    摘要: A discharge lamp lighting apparatus for turning on a discharge lamp has a lighting condition in which a projection is formed at a tip of an electrode for electric discharge. In the discharge lamp lighting apparatus, when the polarity-reversal mode is the second mode, the inverter control circuit operates to generate the inverter control signal so that a DC component contained in the output current increases more than that in the first mode, when the polarity-reversal mode is the first mode, and it is detected that the lamp voltage is lower than a predetermined first voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the second mode, and when the polarity-reversal mode is the second mode, and it is detected that the lamp voltage is higher than a predetermined second voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the first mode.

    摘要翻译: 用于接通放电灯的放电灯点亮装置具有在用于放电的电极的尖端处形成突起的照明条件。 在放电灯点亮装置中,当极性反转模式为第二模式时,逆变器控制电路进行动作以产生逆变器控制信号,使得包含在输出电流中的DC分量比第一模式中增加更多, 极性反转模式是第一模式,并且检测到灯电压低于预定的第一电压,极性反转模式控制电路将极性反转模式改变为第二模式,并且当极性反转模式 是第二模式,并且检测到灯电压高于预定的第二电压,极性反转模式控制电路将极性反转模式改变为第一模式。

    Discharge lamp lighting apparatus and projector
    22.
    发明申请
    Discharge lamp lighting apparatus and projector 有权
    放电灯照明设备和投影机

    公开(公告)号:US20080315782A1

    公开(公告)日:2008-12-25

    申请号:US12213583

    申请日:2008-06-20

    申请人: Tetsuji Hirao

    发明人: Tetsuji Hirao

    IPC分类号: H05B37/02

    摘要: A discharge lamp lighting apparatus for turning on a discharge lamp has a lighting condition in which a projection is formed at a tip of an electrode for electric discharge. In the discharge lamp lighting apparatus, when the polarity-reversal mode is the second mode, the inverter control circuit operates to generate the inverter control signal so that a DC component contained in the output current increases more than that in the first mode, when the polarity-reversal mode is the first mode, and it is detected that the lamp voltage is lower than a predetermined first voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the second mode, and when the polarity-reversal mode is the second mode, and it is detected that the lamp voltage is higher than a predetermined second voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the first mode.

    摘要翻译: 用于接通放电灯的放电灯点亮装置具有在用于放电的电极的尖端处形成突起的照明条件。 在放电灯点亮装置中,当极性反转模式为第二模式时,逆变器控制电路进行动作以产生逆变器控制信号,使得包含在输出电流中的DC分量比第一模式中增加更多, 极性反转模式是第一模式,并且检测到灯电压低于预定的第一电压,极性反转模式控制电路将极性反转模式改变为第二模式,并且当极性反转模式 是第二模式,并且检测到灯电压高于预定的第二电压,极性反转模式控制电路将极性反转模式改变为第一模式。

    Ultrahigh pressure mercury lamp with an anode configured to have a high thermal capacity
    26.
    发明授权
    Ultrahigh pressure mercury lamp with an anode configured to have a high thermal capacity 有权
    具有阳极配置为具有高热容量的超高压汞灯

    公开(公告)号:US06888311B2

    公开(公告)日:2005-05-03

    申请号:US10406389

    申请日:2003-04-04

    申请人: Tetsuji Hirao

    发明人: Tetsuji Hirao

    CPC分类号: H01J61/822 H01J61/0732

    摘要: An ultrahigh pressure mercury lamp which is small and has high light radiation intensity and moreover good color reproduction with high efficiency in which, even with a large amount of mercury added, a failure of the mercury to vaporize in the bulb part does not occur, and in which blackening of the bulb part due to wearing of the electrodes even under a large electrode load as a result of shortening of the distance between the electrodes is low is obtained by an ultrahigh pressure mercury lamp in which a bulb part of the discharge vessel made of translucent material has an essentially ovoid shape, is filled with at least 0.2 mg/mm3 of mercury and which is operated at an input wattage of at most 400 W using direct current, has the length D of the tip area of the anode and the length L of the bulb part in the direction of the tube axis of the lamp set in accordance with the relationship D≧L/2.

    摘要翻译: 一种超高压汞灯,其光照强度高,再次具有高效率的良好的色彩再现性,其中即使加入大量的汞也不会发生汞在灯泡部分蒸发的故障, 其中由于电极之间的距离缩短导致电极甚至在大的电极负载下的磨损引起的灯泡部分的黑化是通过超高压汞灯得到的,其中放电容器的灯泡部分制成 半透明材料具有基本上卵形的形状,填充有至少0.2mg / mm 3的汞并且使用直流以至多400W的输入瓦数进行操作,其长度D为 根据关系D> = L / 2,阳极的尖端区域和灯泡部分在灯管的管轴方向上的长度L。