公开(公告)号：US09785041B2

公开(公告)日：2017-10-10

申请号：US15139022

申请日：2016-04-26

申请人： SEIKO EPSON CORPORATION

发明人： Shun Sato ,  Junichi Suzuki ,  Satoshi Kito

IPC分类号： G03B21/06 ,  H04N9/31 ,  G03B21/20 ,  G03B21/00 ,  H05B41/38 ,  H05B41/288

CPC分类号： G03B21/2053 ,  G03B21/006 ,  G03B21/2026 ,  H04N9/3155 ,  H04N9/317 ,  H04N9/3194 ,  H04N9/3197 ,  H05B41/2886 ,  H05B41/2887 ,  H05B41/38 ,  Y02B20/202

摘要： A discharge lamp driving device includes a discharge lamp driving unit configured to supply a driving current to a discharge lamp including electrodes, a controller configured to control the discharge lamp driving unit, and a voltage detection unit configured to detect an inter-electrode voltage of the discharge lamp, in which the controller controls the discharge lamp driving unit so that the driving current includes a hybrid period in which a first period for supplying an AC current with a first frequency to the discharge lamp and a second period for supplying a DC current to the discharge lamp are alternately repeated, in which the first frequency includes a plurality of different frequencies, and in which the controller changes the first frequency on the basis of at least one of the detected inter-electrode voltage and driving power supplied to the discharge lamp.

公开(公告)号：US20170237954A1

公开(公告)日：2017-08-17

申请号：US15329338

申请日：2015-07-23

申请人： USHIO DENKI KABUSHIKI KAISHA

发明人： Koji YAMADA ,  Shigeyoshi MATSUMOTO

IPC分类号： H04N9/31 ,  G03B21/20

CPC分类号： H04N9/3155 ,  G03B21/2026 ,  G09G3/002 ,  G09G3/34 ,  G09G3/36 ,  G09G2320/0247 ,  H04N9/3179 ,  H05B41/2887

摘要： The discharge lamp lighting device for supplying alternating current to a discharge lamp includes: a power supply control part having a segment signal generation part, a peak value control part, and a frequency control part; and a power supply part. The peak value control part sets a specific segment period, which indicates a value where a value of integral corresponding to a product of the length of the segment period and a peak value set in a segment period is most deviated from an average value of the values of integral within the specific period, to a period other than a final segment period positioned at the final end of the specific period, among a plurality of segment periods belonging to the specific period.

公开(公告)号：US20170227840A1

公开(公告)日：2017-08-10

申请号：US15408049

申请日：2017-01-17

申请人： SEIKO EPSON CORPORATION

发明人： Tetsuo TERASHIMA

IPC分类号： G03B21/20 ,  H05B41/36 ,  G03B21/00 ,  H05B41/24

CPC分类号： G03B21/2053 ,  G03B21/006 ,  G03B21/2026 ,  H05B41/24 ,  H05B41/2887 ,  H05B41/36 ,  Y02B20/202

摘要： A discharge lamp driving device includes a discharge lamp driving section configured to supply a driving current to a discharge lamp including a first electrode and a second electrode and a control section configured to control the discharge lamp driving section. The control section is configured to repeat a unit period. The unit period includes a direct current period including a first direct current period in which a direct current having a first polarity is supplied to the discharge lamp and a second direct current period in which a direct current having a second polarity is supplied to the discharge lamp, and an alternating current period provided between the first direct current period and the second direct current period, an alternating current being supplied to the discharge lamp in the alternating current period. The control section is configured to temporally change length of the direct current period.

公开(公告)号：US09585234B2

公开(公告)日：2017-02-28

申请号：US15014216

申请日：2016-02-03

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Kazuya Kato

IPC分类号： H05B41/16 ,  H05B41/292 ,  H01J61/54 ,  H05B41/288

CPC分类号： H05B41/2926 ,  H01J61/54 ,  H05B41/2887 ,  Y02B20/202

摘要： The lighting device of one aspect according to the present disclosure calculates, based on a voltage value of an AC voltage applied to a discharge lamp and a current value of AC current flowing through the discharge lamp, a first power value defined as a value of power supplied to the discharge lamp in a first half period of the AC voltage and a second power value defined as a value of power supplied to the discharge lamp in a second half period of the AC voltage. The lighting device determines that a ground fault has occurred, when an imbalance state in which a difference between the first power value and the second power value is equal to or greater than a threshold value continues for a predetermined time period.

摘要翻译： 根据本公开的一个方面的照明装置基于施加到放电灯的AC电压的电压值和流过放电灯的AC电流的电流值来计算定义为功率值的第一功率值 在交流电压的前半个周期中提供给放电灯，以及在交流电压的后半个周期中被定义为提供给放电灯的功率值的第二功率值。 当第一功率值和第二功率值之间的差等于或大于阈值的不平衡状态持续预定时间段时，照明装置确定发生接地故障。

公开(公告)号：US20160270197A1

公开(公告)日：2016-09-15

申请号：US15059892

申请日：2016-03-03

申请人： SEIKO EPSON CORPORATION

发明人： Shun SATO ,  Tetsuo TERASHIMA ,  Yoichi NAKAGOMI

IPC分类号： H05B41/288 ,  H04N9/31

CPC分类号： H04N9/3123 ,  H04N9/3155 ,  H04N9/3179 ,  H04N9/3197 ,  H05B41/2886 ,  H05B41/2887 ,  Y02B20/202

摘要： According to an aspect of the invention, a discharge lamp driving device includes a discharge lamp driving section, a control section, and a voltage detecting section. The control section is configured to execute a first discharge lamp driving for executing a first control and a second control for supplying a driving current including a direct current and an alternating current to a discharge lamp. In the first discharge lamp driving, the control section executes the first control when the interelectrode voltage is equal to or smaller than a first threshold voltage at predetermined setting timing and executes the second control when the interelectrode voltage is larger than the first threshold voltage at the predetermined setting timing. A rate of the direct current in the second control is larger than a rate of the direct current in the first control.

摘要翻译： 根据本发明的一个方面，放电灯驱动装置包括放电灯驱动部分，控制部分和电压检测部分。 控制部被配置为执行用于执行第一控制的第一放电灯驱动和用于将包括直流电和交流电的驱动电流提供给放电灯的第二控制。 在第一放电灯驱动中，当电极间电压等于或小于预定设定时刻的第一阈值电压时，控制部执行第一控制，并且当电极间电压大于第一阈值电压时执行第二控制 预定设定时间。 第二控制中的直流电流的速率大于第一控制中的直流电流的速率。

公开(公告)号：US20160249440A1

公开(公告)日：2016-08-25

申请号：US15045739

申请日：2016-02-17

申请人： SEIKO EPSON CORPORATION

发明人： Tetsuo TERASHIMA ,  Yoichi NAKAGOMI

IPC分类号： H05B41/282 ,  H04N9/31 ,  G03B21/00 ,  H05B41/392 ,  G03B21/20

CPC分类号： H04N9/3197 ,  G03B21/006 ,  G03B21/2053 ,  H04N9/3123 ,  H04N9/3141 ,  H04N9/3179 ,  H05B41/2887 ,  H05B41/2928 ,  Y02B20/202

摘要： A discharge lamp driving device includes a discharge lamp driving unit configured to supply driving current to a discharge lamp provided with a first electrode and a second electrode, and a controller configured to control the discharge lamp driving unit. The driving current includes a first AC period and a second AC period in which an AC current is supplied. The first AC period includes a plurality of consecutive first unit driving periods each of which is formed of a first polarity period and a second polarity period, a length of the first polarity period being larger than a length of the second polarity period. The second AC period includes a plurality of consecutive second unit driving periods each of which is formed of the first polarity period and the second polarity period, the length of the second polarity period being larger than the length of the first polarity period.

摘要翻译： 放电灯驱动装置包括：放电灯驱动单元，被配置为向设置有第一电极和第二电极的放电灯提供驱动电流;以及控制器，被配置为控制放电灯驱动单元。 驱动电流包括提供AC电流的第一AC周期和第二AC周期。 第一AC周期包括多个连续的第一单元驱动周期，每个第一单元驱动周期由第一极性周期和第二极性周期形成，第一极性周期的长度大于第二极性周期的长度。 第二AC周期包括多个连续的第二单元驱动周期，每个第二单元驱动周期由第一极性周期和第二极性周期形成，第二极性周期的长度大于第一极性周期的长度。

公开(公告)号：US09405179B2

公开(公告)日：2016-08-02

申请号：US14263363

申请日：2014-04-28

申请人： SEIKO EPSON CORPORATION

发明人： Tetsuo Terashima

IPC分类号： G03B21/20 ,  G03B35/16 ,  H05B37/02 ,  H05B41/288 ,  G02B27/22

CPC分类号： G03B21/2053 ,  G02B27/2228 ,  G03B21/2026 ,  G03B35/16 ,  H05B37/029 ,  H05B41/2887 ,  Y02B20/202

摘要： A projector that outputs a first picture and a second picture alternately, wherein a control section performs first control and second control, controls a discharge lamp driving section. In the first control and the second control, the absolute value of a drive current is relatively small in a first period and relatively large in a second period. In the first control, the energy provided to a first electrode in the second period is greater than the energy provided to the second electrode in the second period. In the second control, the energy provided to the second electrode in the second period is greater than the energy provided to the first electrode in the second period.

摘要翻译： 一种投影仪，其交替地输出第一图像和第二图像，其中控制部分执行第一控制和第二控制，控制放电灯驱动部分。 在第一控制和第二控制中，驱动电流的绝对值在第一期间相对较小，在第二期间相对较大。 在第一控制中，在第二周期中提供给第一电极的能量大于在第二周期中提供给第二电极的能量。 在第二控制中，在第二周期中提供给第二电极的能量大于在第二周期中提供给第一电极的能量。

公开(公告)号：US09220160B2

公开(公告)日：2015-12-22

申请号：US14646581

申请日：2013-10-17

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Masahiro Nishikawa ,  Masatoshi Ueno ,  Kazuya Kato ,  Masashi Kichima

IPC分类号： H05B37/02 ,  H05B41/24 ,  H05B41/36 ,  H05B41/292 ,  H05B41/288

CPC分类号： H05B41/2926 ,  H05B41/2886 ,  H05B41/2887 ,  H05B41/2925

摘要： Control unit decreases power to be supplied to high-pressure discharge lamp when an output voltage or an output current for high-pressure discharge lamp measured by measurement unit is in an abnormal range. Drive unit driving switching element includes capacitor that supplies, to a control electrode of switching element disposed on high potential side, electric charge necessary for turning on switching element disposed on high potential side when switching element disposed on low potential side is turned off. When high-pressure discharge lamp is started up, a discharge lamp lighting device starts to charge capacitor before DC/DC converter is started to operate, and control unit has a determination period for determining presence/absence of an abnormality based on a measured value acquired by measurement unit in a state in which DC/DC converter and DC/AC inverter are operated after completion of charging of capacitor.

摘要翻译： 当由测量单元测量的高压放电灯的输出电压或输出电流处于异常范围时，控制单元降低供应给高压放电灯的功率。 驱动单元驱动开关元件包括电容器，其将设置在高电位侧的开关元件的控制电极提供给设置在低电位侧的开关元件断开时用于接通设置在高电位侧的开关元件所需的电荷。 当高压放电灯启动时，在DC / DC转换器开始运行之前，放电灯点亮装置开始对电容器充电，并且控制单元具有基于所获得的测量值来确定异常的存在/不存在的确定周期 由DC / DC转换器和DC / AC变换器在电容器充电完成后进行动作的状态。

公开(公告)号：US20150055097A1

公开(公告)日：2015-02-26

申请号：US14529722

申请日：2014-10-31

申请人： SEIKO EPSON CORPORATION

发明人： Keishi KIMURA

IPC分类号： H04N13/04 ,  G02B27/22 ,  G03B21/20 ,  H05B41/16 ,  H05B41/24

CPC分类号： G03B21/2053 ,  G02B27/2264 ,  G03B35/16 ,  H04N9/3155 ,  H04N13/341 ,  H04N13/363 ,  H04N13/398 ,  H05B41/16 ,  H05B41/24 ,  H05B41/2887 ,  Y02B20/202

摘要： A discharge lamp driving device includes: a direct-current power supply section (a power supply section) that controls a current of power to be supplied to a discharge lamp from input power, and outputs the current; a voltage detecting section that detects a lamp voltage (a drive voltage) of the discharge lamp; and a control section that controls a modulation factor of a lamp current (a drive current) on which amplitude modulation has been performed, the lamp current (the drive current) which is supplied to the discharge lamp from the direct-current power supply section (the power supply section), in accordance with the detected lamp voltage (drive voltage) of the discharge lamp.

摘要翻译： 放电灯驱动装置包括：直流电源部（电源部），其从输入电力控制向放电灯供电的电力电流，并输出电流; 电压检测部，其检测放电灯的灯电压（驱动电压）; 以及控制部，其控制已经进行了幅度调制的灯电流（驱动电流）的调制度，从直流电源部提供给放电灯的灯电流（驱动电流） 电源部），根据检测到的放电灯的灯电压（驱动电压）。

公开(公告)号：US20150015141A1

公开(公告)日：2015-01-15

申请号：US14505118

申请日：2014-10-02

申请人： Gregory Mirsky ,  Michael Bandel

发明人： Gregory Mirsky ,  Michael Bandel

IPC分类号： H01J61/54 ,  H01J61/16 ,  H01J61/56

CPC分类号： H01J61/54 ,  H01J61/16 ,  H01J61/56 ,  H05B41/042 ,  H05B41/2887 ,  H05B41/382

摘要： A power supply for use in an accelerated weathering test apparatus can ignite the lamp without using a separate igniter and control both the xenon lamp radiated spectrum and its intensity in order to fully simulate the sun's daily cycle, improve the ultraviolet output, reduce the infrared radiation, and compensate for the xenon lamp aging.

摘要翻译： 用于加速风化试验装置的电源可以点燃灯而不使用单独的点火器，并控制氙灯辐射光谱及其强度，以便充分模拟太阳的日常循环，改善紫外线输出，减少红外辐射 ，并补偿氙灯老化。