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    • 3. 发明申请
    • Power Supply Unit For Light Source And Method Of Controlling The Same
    • 光源电源单元及其控制方法
    • US20080180953A1
    • 2008-07-31
    • US11734290
    • 2007-04-12
    • Shiro IsobeTomotaka MoriToshitaka FujiiAtsuji Nakagawa
    • Shiro IsobeTomotaka MoriToshitaka FujiiAtsuji Nakagawa
    • H05B37/02F21V9/00H05B41/36
    • H05B41/3928H04N9/3114H04N9/3155H05B41/3927
    • A power supply unit capable of varying power supplied to a light source at timings determined by synchronization signals is provided. The power supply unit comprises an interface that receives a plurality of types of synchronization signals with different pulse widths and a control unit that changes a setting of output power supplied by the power supply unit in accordance with the pulse widths of the plurality of types of synchronization signals. The control unit includes obtaining a standard time interval from a cycle of a standard type of synchronization signal that has a longest pulse width, parsing for determining type of each synchronization signal, redefining supply power values corresponding to respective types of synchronization signals, and changing the setting of output power of the power supply unit to a supply power value corresponding to a type of the synchronization signal.
    • 提供一种能够在由同步信号确定的定时改变供给光源的功率的电源单元。 电源单元包括接收具有不同脉冲宽度的多种类型的同步信号的接口和控制单元,其根据多种类型的同步的脉冲宽度改变由电源单元提供的输出功率的设置 信号。 控制单元包括从具有最长脉冲宽度的标准类型的同步信号的周期获得标准时间间隔,用于确定每个同步信号的类型的解析,重新定义对应于各种类型的同步信号的电源功率值,以及改变 将电源单元的输出功率设置为与同步信号的类型相对应的电源功率值。
    • 6. 发明授权
    • Lighting circuit for high-pressure discharge lamp
    • 高压放电灯照明电路
    • US07348737B2
    • 2008-03-25
    • US11457837
    • 2006-07-17
    • Toshitaka FujiiAtsuji Nakagawa
    • Toshitaka FujiiAtsuji Nakagawa
    • G05F1/00
    • H05B41/2923Y10S315/05Y10S315/07
    • To provide a lighting circuit of a projector that can be driven by both the commercial alternating-current power supply and a battery and is convenient for portable use. A lighting circuit for a high-pressure discharge lamp 14 includes: a DC/DC converter 1 that boosts a direct-current voltage and outputs the boosted direct-current voltage; an AC/DC converter 10 that rectifies an alternating-current voltage to output a direct-current voltage; an input switch circuit 2 and a power switch circuit 3 that switch between the DC/DC converter 1 and the AC/DC converter 10; a ballast circuit 11 that stabilizes the lighting of the high-pressure discharge lamp 14; a power control section 12 that controls the power supply from the ballast circuit 11 to the high-pressure discharge lamp 14; a lighting initiation circuit 13 that starts lighting of the high-pressure discharge lamp 14; and the high-pressure discharge lamp 14, and the power switch circuit 3 performs power switching in such a manner that a relatively low power is supplied to the high-pressure discharge lamp 14 when a direct-current power supply is connected only to the DC/DC converter, and a relatively high power is supplied to the high-pressure discharge lamp 14 when the commercial alternating-current power supply is connected to the AC/DC converter 10.
    • 提供可由商用交流电源和电池驱动的投影仪的照明电路,并且便于便携式使用。 用于高压放电灯14的点亮电路包括:DC / DC转换器1,其升压直流电压并输出升压的直流电压; AC / DC转换器10,其对交流电压进行整流以输出直流电压; 在DC / DC转换器1和AC / DC转换器10之间切换的输入开关电路2和电源开关电路3; 稳定高压放电灯14的点亮的镇流器电路11; 控制从镇流器电路11到高压放电灯14的电源的电力控制部12; 启动高压放电灯14点亮的点亮启动电路13; 并且高压放电灯14和电源开关电路3进行电力切换,使得当直流电源仅连接到DC时,向高压放电灯14提供相对低的功率 / DC转换器,并且当商用交流电源连接到AC / DC转换器10时,向高压放电灯14提供相对较高的功率。
    • 7. 发明授权
    • Projection system using a high-pressure discharge lamp adapted to d.c. lighting, and method of operating the same
    • 投影系统使用高压放电灯适用于直流 照明和操作方法
    • US07306340B2
    • 2007-12-11
    • US11116035
    • 2005-04-27
    • Atsuji NakagawaToshitaka Fujii
    • Atsuji NakagawaToshitaka Fujii
    • G03B21/14H04N9/31
    • G03B21/2026G03B21/2053H04N9/3114
    • This invention provides a method of operating a projection system wherein light emitted from a high-pressure discharge lamp being lit with d.c. lamp current is passed through color segments of a color filter sequentially and then reflected by an optical element to project an image on a screen, the color segments of the color filter including red, green and blue color segments and a color segment comprising a green ND filter having a relatively low lightness. The method includes making lower a crest value of the d.c. lamp current fed to the high-pressure discharge lamp for a first illumination period during which the color segment comprising the green ND filter is illuminated than a crest value of the d.c. lamp current fed to the high-pressure discharge lamp for a second illumination period during which any one of the other color segments is illuminated, in synchronism with the first illumination period.
    • 本发明提供了一种操作投影系统的方法,其中从高压放电灯发出的光以直流点亮。 灯电流顺序通过彩色滤光片的颜色段,然后被光学元件反射,以将图像投影到屏幕上,滤色片的色段包括红色,绿色和蓝色色段,以及包括绿色ND 滤光片具有较低的亮度。 该方法包括降低直流电压的峰值。 在第一照明期间,将包含绿色ND滤色器的色彩段照亮的高压放电灯的灯电流高于直流电压的峰值。 在与第一照明周期同步的情况下,将其中任何一个其他颜色段照亮的第二照明周期馈送到高压放电灯的灯电流。
    • 9. 发明授权
    • Optical information recording apparatus, optical information reproducing apparatus, optical information recording/reproducing apparatus, and optical information recording medium
    • 光信息记录装置,光信息重放装置,光信息记录/再现装置和光信息记录介质
    • US07227827B2
    • 2007-06-05
    • US10220745
    • 2001-03-09
    • Hideyoshi HorimaiMitsuteru InoueToshitaka Fujii
    • Hideyoshi HorimaiMitsuteru InoueToshitaka Fujii
    • G11B7/00
    • G11B11/10534G03H1/0248G03H1/182G03H1/26G03H2001/0212G03H2001/026G03H2240/25G03H2260/35G11B7/0065G11B7/128G11B7/1356G11B11/10502
    • An object of the present invention is to make it possible to record information on an optical information recording medium in the form of three dimensional interference patterns so that the information is erasable in part.The optical information recording medium (1) has an information recording layer (3) made of a magneto-optic recording material. A pick-up (11) of an optical information recording/reproducing apparatus generates information light by spatially modulating laser light emitted from a light source unit (20) with a spatial light modulator (22), and generates recording-specific reference light spatially modulated in phase by spatially modulating the phase of the laser light emitted from the light source (20) with a phase-spatial light modulator (16). The information recording layer (3) of the optical information recording medium (1) is irradiated with the information light and the recording-specific reference light. An electromagnetic coil (30) applies a magnetic field to the information recording layer (3). A three-dimensional distribution pattern of magnetization corresponding to the interference pattern resulting from the information light and the recording-specific reference light is formed in the information recording layer (3).
    • 本发明的目的是使得可以以三维干涉图案的形式在光学信息记录介质上记录信息,使得信息可以部分地被擦除。 光信息记录介质(1)具有由磁光记录材料制成的信息记录层(3)。 光信息记录/再现装置的拾取器(11)通过利用空间光调制器(22)空间调制从光源单元(20)发出的激光来产生信息光,并产生记录专用参考光空间调制 通过用相空间光调制器(16)空间调制从光源(20)发射的激光的相位来同相。 光信息记录介质(1)的信息记录层(3)用信息光和记录专用参考光照射。 电磁线圈(30)向信息记录层(3)施加磁场。 在信息记录层(3)中形成与由信息光产生的干涉图形相对应的磁化的三维分布图案和记录专用参考光。