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1. 发明授权

US06979960B2 Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the same 有权
标题翻译：用于驱动光源的电路，投影仪，用于控制光源照明的方法，以及用于执行光源的计算机可读程序
公开(公告)号：US06979960B2
公开(公告)日：2005-12-27
申请号：US10715504
申请日：2003-11-19
申请人： Kazuo Okawa , Tomiyoshi Ushiyama
发明人： Kazuo Okawa , Tomiyoshi Ushiyama
IPC分类号： G02F1/13 , G02F1/133 , G02F1/13357 , G03B21/00 , G03B21/14 , H05B41/24 , H05B41/282 , H05B41/288 , H05B41/38 , H05B41/42 , G05F1/00
CPC分类号： H05B41/288 , H05B41/38 , H05B41/382
摘要： The invention provides a circuit to drive a light source capable of lengthening the life span of the light source and of coping with both a rated power mode and a power saving mode. A circuit to drive a light source includes a control device to drive the light source, which is composed of a discharge tube, and to switch the light source to a plurality of lighting modes including a rated power mode and a power saving mode. The control device includes a lighting mode setting unit to set the lighting mode to one of the plurality of lighting modes, and a rated power supplying unit to supply a rated power to the light source at the lighting starting time of the light source until a halogen cycle of the discharge tube is stabilized. The control device switches the light source to the lighting mode set by the lighting mode setting unit after the halogen cycle of the discharge tube is stabilized.
摘要翻译：本发明提供了一种驱动能够延长光源的使用寿命以及应付额定功率模式和省电模式的光源的电路。驱动光源的电路包括驱动由放电管构成的光源的控制装置，并且将光源切换成包括额定功率模式和省电模式的多个点亮模式。控制装置包括：点亮模式设定单元，用于将点亮模式设定为多个发光模式中的一个;以及额定供电单元，用于在光源的点亮开始时间向光源提供额定功率，直到卤素放电管的周期稳定。在放电管的卤素循环稳定后，控制装置将光源切换到由点亮模式设定单元设定的点亮模式。

2. 发明授权

US08264170B2 Discharge lamp lighting device, method of driving discharge lamp, and projector 有权
标题翻译：放电灯照明装置，放电灯驱动方法和投影仪
公开(公告)号：US08264170B2
公开(公告)日：2012-09-11
申请号：US12698356
申请日：2010-02-02
申请人： Tetsuo Terashima , Kazuo Okawa
发明人： Tetsuo Terashima , Kazuo Okawa
IPC分类号： H05B37/02
CPC分类号： G03B21/2053 , G03B21/2026 , H05B41/38
摘要： In at least one embodiment of the disclosure, a discharge lamp lighting device includes a discharge lamp driving unit that drives a discharge lamp by supplying an AC driving current to the discharge lamp. A memory unit is configured to store driving parameters for the AC driving current. A control unit is configured to control the discharge lamp driving unit based on the driving parameters stored in the memory unit. The driving parameters comprise a range of holding time values, each holding time value representing a time period in which the AC driving current is to be continuously maintained at a same polarity. Upon a predetermined time condition, the control unit selects one of the holding time values based on a predetermined probability and controls the discharge lamp driving unit based on the selected holding time value.
摘要翻译：在本公开的至少一个实施例中，放电灯点亮装置包括通过向放电灯提供AC驱动电流来驱动放电灯的放电灯驱动单元。存储器单元被配置为存储AC驱动电流的驱动参数。控制单元被配置为基于存储在存储单元中的驱动参数来控制放电灯驱动单元。驱动参数包括保持时间值的范围，每个保持时间值表示交流驱动电流将以相同的极性连续地保持的时间段。在预定时间条件下，控制单元基于预定概率选择一个保持时间值，并根据选择的保持时间值控制放电灯驱动单元。

3. 发明申请

US20090153806A1 Light source device, projector, and driving method of discharge lamp 有权
标题翻译：放电灯的光源装置，投影机及驱动方法
公开(公告)号：US20090153806A1
公开(公告)日：2009-06-18
申请号：US12314181
申请日：2008-12-05
申请人： Kentaro Yamauchi , Tetsuo Terashima , Takeshi Takezawa , Kazuo Okawa , Shigeyasu Soma
发明人： Kentaro Yamauchi , Tetsuo Terashima , Takeshi Takezawa , Kazuo Okawa , Shigeyasu Soma
IPC分类号： G03B21/28 , H05B41/14
CPC分类号： H01J61/86 , G03B21/00 , G03B21/005 , H05B41/2883 , H05B41/2928
摘要： A light source device is provided. The light source device has: a discharge lamp that emits light by discharge in an interelectrode space between a first electrode and a second electrode; a main mirror arranged at the first electrode side that reflects light flux generated by the discharge in the interelectrode space so as to emit the light flux to an area to be illuminated; a sub-mirror arranged at the second electrode side facing opposite the main mirror that reflects the light flux from the interelectrode space toward the interelectrode space; and a driver that supplies alternating current to the first and the second electrodes, and changes duty ratio of the alternating current supplied to the first and the second electrodes in accordance with a predetermined pattern. In the light source device, maximum value of time ratio of a first anode period in which the first electrode works as anode to one cycle of the alternating current is larger than maximum value of time ratio of a second anode period in which the second electrode works as anode to the one cycle of the alternating current.
摘要翻译：提供光源装置。光源装置具有：放电灯，其在第一电极和第二电极之间的电极间空间中通过放电发光; 主反射镜，其布置在第一电极侧，反射在电极间空间中由放电产生的光束，以将光通量发射到待照射的区域; 副镜子，其布置在第二电极侧，与主镜相对，反射来自电极间空间的光束朝向电极间空间; 以及驱动器，其向第一和第二电极提供交流电流，并且根据预定图案改变供应到第一和第二电极的交流电的占空比。在光源装置中，第一电极作为阳极工作的一个阳极周期与交流电的一个周期的时间比的最大值大于第二电极工作的第二阳极周期的时间比的最大值作为阳极到交流电的一个周期。

4. 发明授权

US07511433B2 Discharge lamp lighting device and projector 有权
标题翻译：放电灯照明装置和投影机
公开(公告)号：US07511433B2
公开(公告)日：2009-03-31
申请号：US11670752
申请日：2007-02-02
申请人： Kazuo Okawa
发明人： Kazuo Okawa
IPC分类号： H05B37/02
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。

5. 发明授权

US08102128B2 Driving method and driving device for discharge lamp, light source device, and image display device 有权
标题翻译：放电灯，光源装置和图像显示装置的驱动方法和驱动装置
公开(公告)号：US08102128B2
公开(公告)日：2012-01-24
申请号：US12404341
申请日：2009-03-16
申请人： Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
发明人： Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
IPC分类号： H05B41/36
CPC分类号： H05B41/2928
摘要： A driving method for a discharge lamp that lights by performing discharge between two electrodes while alternately switching a polarity of a voltage applied between the two electrodes includes: modulating an anode duty ratio, which is a ratio of an anode time for which one of the electrodes operates as an anode in one period of the polarity switching, by setting first and second periods with different anode duty ratios; and setting a first polarity switching period in the first period to be shorter than a second polarity switching period in the second period.
摘要翻译：通过在两个电极之间交替地切换施加的电压的极性而在两个电极之间进行放电而点亮的放电灯的驱动方法包括：调制阳极占空比，该阳极占空比是电极之一通过设置具有不同阳极占空比的第一和第二周期，在极性切换的一个周期中作为阳极工作; 以及将所述第一周期中的第一极性切换期间设定为短于所述第二期间的第二极性切换期间。

6. 发明授权

US08089214B2 Driving method and driving device for discharge lamp, light source device, and image display device 有权
标题翻译：放电灯，光源装置和图像显示装置的驱动方法和驱动装置
公开(公告)号：US08089214B2
公开(公告)日：2012-01-03
申请号：US12389648
申请日：2009-02-20
申请人： Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
发明人： Tetsuo Terashima , Kentaro Yamauchi , Takeshi Takezawa , Kazuo Okawa
IPC分类号： H05B41/36 , H05B41/24
CPC分类号： H05B41/2928
摘要： A driving method for a discharge lamp that lights by performing discharge between two electrodes while alternately switching a polarity of a voltage applied between the two electrodes includes: modulating an anode duty ratio, which is a ratio of an anode time for which one of the electrodes operates as an anode in one period of the polarity switching, within a predetermined range; and changing the predetermined range to make a maximum value of the modulated anode duty ratio higher than a maximum value of an initial anode duty ratio of the discharge lamp when a predetermined condition is satisfied.
摘要翻译：通过在两个电极之间交替地切换施加的电压的极性而在两个电极之间进行放电而点亮的放电灯的驱动方法包括：调制阳极占空比，该阳极占空比是电极之一在极性切换的一个周期内作为阳极在预定范围内工作; 并且当满足预定条件时，改变预定范围以使调制的阳极占空比的最大值高于放电灯的初始阳极占空比的最大值。

7. 发明授权

US07999488B2 Ignition controller, light source, projector and ignition control method 有权
标题翻译：点火控制器，光源，投影机和点火控制方式
公开(公告)号：US07999488B2
公开(公告)日：2011-08-16
申请号：US12213678
申请日：2008-06-23
申请人： Kazuo Okawa
发明人： Kazuo Okawa
IPC分类号： G05F1/00
CPC分类号： H05B41/2888 , Y02B20/202
摘要： An ignition controller that controls ignition of a discharge lamp discharging and emitting light between a pair of electrodes provided therein, the controller includes: an ignition device that ignites the discharge lamp, and a controller that controls a drive of the ignition device, in which the controller includes: a pulse applying unit that applies a high pressure pulse to the pair of electrodes by the ignition device, a direct current applying unit for applying a direct current to the pair of electrodes for a first period after applying the high pressure pulse, and an alternating current applying unit for applying a first alternating current to the pair of electrodes for a second period after the first period.
摘要翻译：一种点火控制器，其控制放电灯的点火并在其中设置的一对电极之间发射光，控制器包括：点燃放电灯的点火装置和控制点火装置的驱动的控制器，其中，控制器包括：脉冲施加单元，其通过点火装置向一对电极施加高压脉冲;直流施加单元，用于在施加高压脉冲之后的第一时间段内施加直流电流，以及交流施加单元，用于在所述第一周期之后的第二周期中向所述一对电极施加第一交流电流。

8. 发明申请

US20100277085A1 DISCHARGE LAMP LIGHTING DEVICE, PROJECTOR, AND DISCHARGE LAMP LIGHTING DEVICE CONTROL METHOD 有权
标题翻译：放电灯照明装置，投影仪和放电灯照明装置控制方法
公开(公告)号：US20100277085A1
公开(公告)日：2010-11-04
申请号：US12810417
申请日：2008-12-25
申请人： Kazuo Okawa
发明人： Kazuo Okawa
IPC分类号： H05B41/36
CPC分类号： H05B41/2887 , H02M1/4225 , H02M7/53873 , H02M2001/007 , Y02B20/202 , Y02B70/126
摘要： Provided is an electric discharge lamp lighting device (10) including a control section (40) which performs first control operation for controlling at least the current value, frequency, duty ratio or waveform of a driving current (I) for driving an electric discharge lamp (90). The electric discharge lamp lighting device also includes a signal receiving section (50) for receiving a drive control signal (S) which can control at least the current value, frequency, duty ratio or waveform of the driving current (I) in mode different from the first control operation. The control section (40) performs second control operation for controlling at least the current value, frequency duty ratio or waveform of the driving current (I) based on the drive control signal (S), in the case where the signal receiving section (50) has received the drive control signal (S).
摘要翻译：本发明提供一种放电灯点亮装置（10），其具有控制部（40），该控制部进行用于至少控制用于驱动放电灯的驱动电流（I）的电流值，频率，占空比或波形的第一控制动作（90）。放电灯点亮装置还包括用于接收驱动控制信号（S）的信号接收部（50），所述驱动控制信号（S）至少可以以不同于模式的方式至少控制驱动电流（I）的当前值，频率，占空比或波形第一个控制操作。在信号接收部（50）的情况下，控制部（40）进行基于驱动控制信号（S）的至少控制驱动电流（I）的当前值，频率占空比或波形的第二控制动作）已经接收到驱动控制信号（S）。

9. 发明申请

US20090160348A1 Discharge lamp lighting device and projector 有权
标题翻译：放电灯照明装置和投影机
公开(公告)号：US20090160348A1
公开(公告)日：2009-06-25
申请号：US12379296
申请日：2009-02-18
申请人： Kazuo Okawa
发明人： Kazuo Okawa
IPC分类号： H05B41/36
CPC分类号： H05B41/2882 , H05B41/2928 , Y02B20/208
摘要： A method of generating a driving current supplied to a high pressure discharge lamp, including outputting a DC current, converting the DC current to an AC current having a predetermined frequency, generating a reference pulse which is asynchronous with the AC current, and superposing the first pulse and the second pulse to the AC current for producing the driving current.
摘要翻译：一种产生提供给高压放电灯的驱动电流的方法，包括输出DC电流，将DC电流转换为具有预定频率的AC电流，产生与AC电流异步的参考脉冲，并将第一脉冲和第二脉冲到交流电流以产生驱动电流。

10. 发明申请

US20050057194A1 Discharge lamp lighting apparatus and discharge lamp apparatus 有权
标题翻译：放电灯照明装置和放电灯装置
公开(公告)号：US20050057194A1
公开(公告)日：2005-03-17
申请号：US10952720
申请日：2004-09-30
申请人： Yutaka Ishihara , Kazuo Okawa
发明人： Yutaka Ishihara , Kazuo Okawa
IPC分类号： H05B41/282 , H05B41/16 , H05B41/292 , H05B41/392 , H05B37/02
CPC分类号： H05B41/392 , H05B41/2923 , H05B41/2926
摘要： The present invention relates to a discharge lamp lighting apparatus which can prevent an increase of loss and a rise of temperature in the area where discharge lamp tube voltage is low. The power conversion circuit 1 converts the input power Pin to output the DC power Pd. The discharge lamp driving circuit 5 converts the DC power Pd supplied from the power conversion circuit 1 to output AC voltage Vo and AC current Io. The controller 2 provides constant power control for maintaining the AC power Po provided by the AC voltage Vo and AC current Io to be constant when the AC voltage Vo is higher than the predetermined value V1, and provides power reduction control for reducing AC power Po to the power conversion circuit 1 when the AC voltage Vo is lower than the predetermined value V1.
摘要翻译：放电灯点灯装置技术领域本发明涉及能够防止放电灯管电压低的区域的损失增加和温度升高的放电灯点亮装置。电力转换电路1将输入电力Pin转换为输出直流电力Pd。放电灯驱动电路5将从电力转换电路1提供的直流电力Pd转换为输出交流电压Vo和交流电流Io。当AC电压Vo高于预定值V1时，控制器2提供恒定的功率控制，用于将由AC电压Vo和AC电流Io提供的AC电力Po保持为恒定，并且提供用于减少AC功率Po的功率降低控制当交流电压Vo低于预定值V1时，电力转换电路1。

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