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1. 发明申请

US20090085495A1 LIGHT SOURCE AND PROJECTOR 有权
标题翻译：光源和投影仪
公开(公告)号：US20090085495A1
公开(公告)日：2009-04-02
申请号：US12237746
申请日：2008-09-25
申请人： Kentaro YAMAUCHI , Tetsuo TERASHIMA , Takeshi TAKEZAWA , Kazuo OKAWA , Keishi KIMURA
发明人： Kentaro YAMAUCHI , Tetsuo TERASHIMA , Takeshi TAKEZAWA , Kazuo OKAWA , Keishi KIMURA
IPC分类号： H05B41/36
CPC分类号： H05B41/2928 , Y02B20/208
摘要： A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies steady energy to the first and second electrodes and an initial operation which supplies energy to the first and second electrodes with an operation different from the steady operation before performing the steady operation, a determination unit determining states of the discharge lamp and a data storage unit storing plural initial power feeding conditions provided corresponding to states of the discharge lamp as examples of the initial operation and plural steady power feeding conditions provided corresponding to the states of the discharge lamp as examples of the steady operation, in which the drive unit performs the initial operation in any one of conditions selected from the plural initial power feeding conditions according to a determination result by the determination unit and performs the steady operation in any one of conditions selected from the plural steady power feeding conditions according to a determination result by the determination unit.
摘要翻译：光源包括：放电灯，包括第一电极和通过它们之间放电发光的第二电极;驱动单元，执行向第一和第二电极提供稳定能量的稳定操作;以及初始操作，其向第一和第二电极提供能量; 在执行稳定操作之前具有与稳定操作不同的操作的第二电极，确定单元确定放电灯的状态和存储与放电灯的状态相对应地提供的多个初始供电条件的数据存储单元，作为初始操作的示例以及对应于放电灯的状态提供的多个稳定供电条件，作为稳定操作的示例，其中驱动单元根据根据确定结果的多个初始供电条件中选择的任何一个条件执行初始操作确定单元并执行根据由确定单元的确定结果从多个稳定供电条件中选择的任何一个条件下的稳定操作。

2. 发明申请

US20090108770A1 LIGHT SOURCE, PROJECTOR, AND METHOD FOR DRIVING LIGHT SOURCE 有权
标题翻译：光源，投影仪和驱动光源的方法
公开(公告)号：US20090108770A1
公开(公告)日：2009-04-30
申请号：US12258958
申请日：2008-10-27
申请人： Tetsuo TERASHIMA , Kentaro YAMAUCHI , Takeshi TAKEZAWA , Kazuo OKAWA , Keishi KIMURA
发明人： Tetsuo TERASHIMA , Kentaro YAMAUCHI , Takeshi TAKEZAWA , Kazuo OKAWA , Keishi KIMURA
IPC分类号： H05B41/36
CPC分类号： H05B41/2928 , Y02B20/208
摘要： A light source includes an arc tube having a first electrode and a second electrode that emit light by discharge between the electrodes, and a driving unit that supplies a current between the first electrode and the second electrode and can change at least a waveform of frequency and waveform of the supplied current. The driving unit can perform lighting drive of the arc tube, using a driving waveform formed by combining a first lighting waveform having a maximum current value at a part other than a half-cycle rear end of the waveform and a second lighting waveform having a maximum current value at the half-cycle rear end of the waveform.
摘要翻译：光源包括具有第一电极和第二电极的电弧管，所述第一电极和第二电极通过电极之间的放电发光;以及驱动单元，其在第一电极和第二电极之间提供电流，并且可以至少改变频率的波形，供电电流的波形。驱动单元可以使用通过组合在波形的半周期后端部分以外的部分具有最大电流值的第一发光波形和具有最大值的第二发光波形而形成的驱动波形来执行电弧管的点亮驱动波形半周期的当前值。

3. 发明申请

US20090237009A1 DISCHARGE LAMP LIGHTING DEVICE, CONTROL METHOD THEREOF, AND PROJECTOR 有权
标题翻译：放电灯照明装置，其控制方法和投影仪
公开(公告)号：US20090237009A1
公开(公告)日：2009-09-24
申请号：US12401301
申请日：2009-03-10
申请人： Kazuo OKAWA , Kentaro YAMAUCHI , Tetsuo TERASHIMA , Takeshi TAKEZAWA
发明人： Kazuo OKAWA , Kentaro YAMAUCHI , Tetsuo TERASHIMA , Takeshi TAKEZAWA
IPC分类号： H05B41/36
CPC分类号： H05B41/2928
摘要： A discharge lamp lighting device includes: a power control circuit outputting DC current; an AC conversion circuit generating and outputting discharge lamp driving AC current by inverting the polarity of the DC current at a predetermined timing; a control circuit performing an AC conversion control process of controlling a polarity inversion timing of the discharge lamp driving AC current on the AC conversion circuit and performing an interval current control process of controlling a current value of the DC current every polarity inversion timing interval on the power control circuit; a detection unit detecting a discharge lamp driving voltage at the time of normal lighting; a history information storage periodically storing history information of the detected discharge lamp driving voltage, a statistics processing unit statistically processing the stored history information every predetermined period; and a statistical information storage storing information having been subjected to the statistical process as statistical information. Here, the control circuit sets and controls at least one of a frequency, a duty ratio, and a waveform of the discharge lamp driving AC current on the basis of a time-dependent tendency of the statistical information.
摘要翻译：放电灯点亮装置包括：输出DC电流的功率控制电路; AC转换电路，通过在预定定时反转DC电流的极性来产生并输出放电灯来驱动AC电流; 执行AC转换控制处理的控制电路，该AC转换控制处理控制AC转换电路上的放电灯驱动AC电流的极性反转定时，并且执行在每个极性反转定时间隔上对DC电流的当前值进行控制的间隔电流控制处理电源控制电路; 检测单元，其检测在正常点亮时的放电灯驱动电压; 历史信息存储器，周期性地存储检测到的放电灯驱动电压的历史信息;统计处理单元，每隔预定周期对所存储的历史信息进行统计处理; 以及将经过统计处理的信息作为统计信息存储的统计信息存储。这里，控制电路基于统计信息的时间依赖倾向来设置和控制放电灯驱动AC电流的频率，占空比和波形中的至少一个。

4. 发明申请

US20070188107A1 DISCHARGE LAMP LIGHTING DEVICE AND PROJECTOR 有权
标题翻译：放电灯照明设备和投影仪
公开(公告)号：US20070188107A1
公开(公告)日：2007-08-16
申请号：US11670752
申请日：2007-02-02
申请人： Kazuo OKAWA
发明人： Kazuo OKAWA
IPC分类号： H05B39/04
CPC分类号： H05B41/2882 , H05B41/2928 , Y02B20/208
摘要： A high pressure discharge lamp lighting device includes: a DC power supply circuit that is supplied with a DC voltage and performs current control to supply a predetermined constant power to a high pressure discharge lamp; an inverter that converts an output current of the DC power supply circuit into an AC current having a predetermined frequency and supplies a driving current to the high pressure discharge lamp; and a control unit that controls the DC power supply circuit and the inverter. In the high pressure discharge lamp lighting device, the control unit superposes a current pulse asynchronous with the driving current on the driving current.
摘要翻译：高压放电灯点亮装置包括：直流电源电路，其被提供有直流电压并执行电流控制以向高压放电灯提供预定的恒定功率; 逆变器，其将直流电源电路的输出电流转换成具有预定频率的交流电流，并向高压放电灯提供驱动电流; 以及控制单元，其控制直流电源电路和逆变器。在高压放电灯点亮装置中，控制单元将与驱动电流异步的电流脉冲叠加在驱动电流上。

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