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    • 1. 发明授权
    • Saturable reactor and power source apparatus for pulse laser utilizing same
    • 可饱和电抗器和脉冲激光器的电源装置
    • US06594292B2
    • 2003-07-15
    • US09352610
    • 1999-07-13
    • Yasufumi KawasujiMasao HagiwaraYasuhiko MatsukiYoshio Nomura
    • Yasufumi KawasujiMasao HagiwaraYasuhiko MatsukiYoshio Nomura
    • H01S300
    • H01F38/02
    • A saturable reactor is in a conductive state or has a magnetic switching function depending on the direction of the current flowing through it. Also provided is a power source apparatus for pulse laser utilizing the satiable reactor. The saturable reactor comprises a saturable magnetic core (1); a principal coil (2) wound around the saturable magnetic core (1); a subsidiary coil (3) wound around the saturable magnetic core (1); and a power source (4) which feeds electric current (ib) to the subsidiary coil (3) when the transition of the saturable magnetic core (1) from unsaturated state to saturated state is effected by the subsidiary coil (3) wherein the saturable magnetic core (1) becomes saturated state immediately when a current (i2) is applied to the principal coil (2) in a direction same as the current flowing in the subsidiary magnetic coil (3), while becoming the saturated state from an initial unsaturated state at the time when a product of the voltage and time reaches a predetermined value if a current (i1) is applied to the principal coil (2) in a direction opposite to the current flowing in the subsidiary magnetic coil (3).
    • 可饱和电抗器处于导通状态或具有取决于流过其的电流的方向的磁性开关功能。 还提供了一种利用可饱和电抗器的脉冲激光器的电源装置。 可饱和电抗器包括可饱和磁芯(1); 围绕可饱和磁芯(1)缠绕的主线圈(2); 缠绕在可饱和磁芯(1)上的辅助线圈(3); 以及当可饱和磁芯(1)从不饱和状态转变为饱和状态时,向辅助线圈(3)馈送电流(ib)的电源(4)由辅助线圈(3)实现,其中可饱和 当电流(i2)以与在辅助电磁线圈(3)中流动的电流相同的方向施加到主线圈(2)时,磁芯(1)立即变为饱和状态,同时从初始不饱和状态变为饱和状态 当电流(i1)以与在辅助电磁线圈(3)中流动的电流相反的方向施加到主线圈(2)时,电压和时间的乘积达到预定值时的状态。
    • 2. 发明授权
    • Laser discharge electrodes with current return plate structure
    • 具有电流回流板结构的激光放电电极
    • US06490310B1
    • 2002-12-03
    • US09658920
    • 2000-09-11
    • Takayuki YabuTakanobu IshiharaTakashi MatsunagaYasufumi Kawasuji
    • Takayuki YabuTakanobu IshiharaTakashi MatsunagaYasufumi Kawasuji
    • H01S3097
    • H01S3/038
    • A discharge electrode for a laser device allowing return plates to be easily attached/detached and a laser device with the discharge electrode are provided. To this end, structure in which a pair of an anode (5A) and a cathode (5B), provided facing each other inside a laser chamber (2) sealing in laser gases, for discharging electricity to excite the laser gases flowing through a space between them, thereby oscillating a laser beam, a conductive anode base (6) for holding the anode (5A), an insulating cathode base (8) for holding the cathode (5B), and a plurality of return plates (9B) for electrically connecting the anode base (6) and the laser chamber (2) and supplying an electric current to the anode (5A) are provided, and in which upper portions and lower portions of the return plates (9B) are connected respectively with an upper fixed plate (9A) and a lower fixed plate (9C), is given.
    • 提供了一种用于允许容易地安装/拆卸返回板的激光装置的放电电极和具有放电电极的激光装置。 为此,在密封激光气体的激光室(2)内相对设置的一对阳极(5A)和阴极(5B),用于放电以激发流过空间的激光气体的结构 在它们之间,由此振荡激光束,用于保持阳极(5A)的导电阳极基座(6),用于保持阴极(5B)的绝缘阴极基座(8)和用于电气的多个返回板 连接阳极基体(6)和激光室(2)并向阳极(5A)供给电流,其中返回板(9B)的上部和下部分别与上固定 板(9A)和下固定板(9C)。
    • 3. 发明授权
    • Discharge electrodes connecting structure for laser apparatus and laser apparatus therewith
    • 激光装置的放电电极连接结构和激光装置
    • US06771685B1
    • 2004-08-03
    • US09648632
    • 2000-08-28
    • Takayuki YabuTakanobu IshiharaTakashi MatsunagaYasufumi Kawasuji
    • Takayuki YabuTakanobu IshiharaTakashi MatsunagaYasufumi Kawasuji
    • H01S3097
    • H01S3/038H01S3/0971H01S3/225
    • The invention provides a discharge electrodes connecting structure for a laser apparatus in which a thickness of the return plate is set to be within an optimum range, and a laser apparatus employing the same. Accordingly, a laser apparatus is provided with a laser chamber (2) sealing a laser gas, a pair of anode (5A) and cathode (5B) provided within the laser chamber in an opposing manner, generating a discharge so as to excite a laser gas flowing therebetween and oscillating a laser beam, a conductive anode base (6) holding the anode, an insulative cathode base (8) holding the cathode, and a return plate (9) electrically connecting the anode base to the laser chamber so as to supply a current to the anode. A thickness (t) of the return plate is set to be equal to or more than 100 &mgr;m and equal to or less than 500 &mgr;m, and the return plate is arranged substantially in parallel to a gas flow of the laser gas flowing between the discharge electrodes.
    • 本发明提供一种用于激光装置的放电电极连接结构,其中将返回板的厚度设置在最佳范围内,以及采用该放电电极连接结构的激光装置。 因此,激光装置设置有激光室(2),密封激光气体,以相对的方式设置在激光室内的一对阳极(5A)和阴极(5B),产生放电以激发激光 在其间流动的气体和激光束的振荡,保持阳极的导电阳极基座(6),保持阴极的绝缘阴极基座(8)和将阳极基座电连接到激光室的回流板(9) 向阳极提供电流。 返回板的厚度(t)设定为100μm以上且500μm以下,返回板大致平行于在排出口之间流动的激光气体的气流 电极。
    • 4. 发明授权
    • Peaking capacitor layout
    • 峰值电容布局
    • US06377595B1
    • 2002-04-23
    • US09657993
    • 2000-09-08
    • Hirotoshi InoueYasufumi KawasujiTetsutarou TakanoTakashi Matsunaga
    • Hirotoshi InoueYasufumi KawasujiTetsutarou TakanoTakashi Matsunaga
    • H01S300
    • H01S3/0975
    • A peaking capacitor layout in which a discharge energy is not lowered even when peaking capacitors are decreased in their capacitance, increased in their number and disposed in a plurality of rows. The discharge energy is uniformly distributed to obtain a stable laser power. A peaking capacitor group in a first row formed of a plurality of peaking capacitors and a peaking capacitor group in a second row formed of a plurality of peaking capacitors are disposed in a plurality of rows (two rows) in a direction in which a length of a loop changes. The capacitance of the peaking capacitors forming the second row having a long loop is adjusted to be smaller than that of the peaking capacitors forming the first row having a short loop. And, the capacitance of the peaking capacitors in the first and second rows are adjusted so that the distribution of the capacitance of the peaking capacitors becomes uniform along the longitudinal direction of the discharge electrodes.
    • 其中即使峰值电容器的放电能量也不降低,其电容量减小,峰值电容布置增加并且以多行排列。 放电能量均匀分布,以获得稳定的激光功率。 由多个峰化电容器形成的第一行中的峰值电容器组和由多个峰值电容器形成的第二行中的峰值电容器组沿着长度方向的多个行(两行)设置, 一个循环改变了。 形成具有长环的第二行的峰化电容器的电容被调节为小于形成具有短循环的第一行的峰化电容器的电容。 并且,调整第一和第二行中的峰值电容器的电容,使得峰化电容器的电容分布沿着放电电极的纵向均匀。
    • 7. 发明授权
    • Power supply unit for pulsed laser using magnetic switch
    • 使用磁性开关脉冲激光器的电源单元
    • US06188144B1
    • 2001-02-13
    • US09437670
    • 1999-11-10
    • Yasufumi Kawasuji
    • Yasufumi Kawasuji
    • H03K300
    • H03K3/57H03K17/80
    • A plurality of series circuits of saturable reactors and transferring capacitors are connected in parallel to a peaking capacitor, the plurality of saturable reactors are magnetically coupled, and saturable reactors for finely adjusting a transfer initiation time are connected in series to the plurality of saturable reactors. Otherwise, a plurality of series circuits of saturable reactors and transferring capacitors are connected in parallel to the peaking capacitor, the plurality of saturable reactors are magnetically coupled, and post-saturation inductances of the plurality of saturable reactors are made different.
    • 饱和电抗器和转移电容器的多个串联电路并联连接到峰值电容器,多个可饱和电抗器是磁耦合的,用于精细调节转移起始时间的可饱和电抗器串联连接到多个可饱和电抗器。 否则,可饱和电抗器和转移电容器的多个串联电路并联连接到峰值电容器,多个饱和电抗器被磁耦合,并且使多个饱和电抗器的后饱和电感变得不同。
    • 8. 发明授权
    • Electric power steering controller
    • 电动助力转向控制器
    • US06131692A
    • 2000-10-17
    • US49874
    • 1998-03-27
    • Yasufumi Kawasuji
    • Yasufumi Kawasuji
    • B62D6/00B62D5/04B62D119/00B62D137/00H02P7/00H02P7/29
    • B62D5/0472H02P7/04
    • An electric power steering controller which, when an assist command signal is absent or a PWM signal is off according to the assist command signal, keeps a steering wheel position without affecting on the steering operation even if an external force is applied to tires thereby improving steering operability. A switch controller 25 controls to turn on and off switches Q1 to Q4, which form an H-bridge circuit, to change a direction of a current flowing through an assist motor M1, thereby controlling to rotate the assist motor M1 and its rotating direction. For example, to rotate the assist motor M1 rightward, the switch Q4 is turned on, the switch Q1 is turned on or off according to an on-off signal of the PWM signal, and when the switch Q1 is on, a current I1 flows through the assist motor M1 to rotate it rightward. When an assist command is absent including a condition that the PWM signal is off when the assist motor M1 is rotated rightward, the switching control is performed to turn on the switches Q2 and Q4 only to form a closed circuit including the assist motor M1. Thus, the assist motor M1 is prevented from being rotated by an unexpected external force.
    • 一种电动助力转向控制器,当辅助指令信号不存在或根据辅助指令信号断开PWM信号时,即使向轮胎施加外力也保持方向盘位置而不影响转向操作,从而改善转向 可操作性 开关控制器25控制导通和断开形成H桥电路的开关Q1至Q4以改变流过辅助电动机M1的电流的方向,从而控制使辅助电动机M1及其旋转方向旋转。 例如,为了使辅助电动机M1向右旋转,开关Q4导通,根据PWM信号的通断信号,开关Q1导通或断开,当开关Q1导通时,电流I1流动 通过辅助马达M1向右旋转。 当辅助指令不存在时,当辅助电动机M1向右旋转时,PWM信号关闭的条件,执行切换控制以仅接通开关Q2和Q4,以形成包括辅助电动机M1的闭合电路。 因此,通过意外的外力来防止辅助马达M1旋转。
    • 9. 发明授权
    • Discharge circuit for pulsed laser
    • 脉冲激光放电电路
    • US06693938B1
    • 2004-02-17
    • US09657669
    • 2000-09-08
    • Hiroshi UmedaYasufumi KawasujiTetsutarou Takano
    • Hiroshi UmedaYasufumi KawasujiTetsutarou Takano
    • H01S300
    • H01S3/097H01S3/225
    • A discharge circuit for pulsed laser 10 in which one connecting portion of a preionization capacitor Cpp is connected to a preionization electrode 4 and the other one connecting portion of the preionization capacitor Cpp is connected to a junction between a capacitor C2 and a magnetic switch AL2. In the discharge circuit for pulsed laser 10, a voltage Vcc of the preionization capacitor Cpp, which is charged in synchronization with the charging of the capacitor C2, increases at a time t3 earlier by a predetermined time than a start time t6 of main discharge by the main discharge electrodes 1, 2. When a voltage of the preionization electrode 4 increases to a predetermined preionization start voltage through the preionization capacitor Cpp, a main discharge gap 3 is preionized by a corona discharge caused by the preionization electrode 4 and the main discharge is caused by the main discharge electrodes 1, 2 with the main discharge gap 3 fully preionized.
    • 一种用于脉冲激光器10的放电电路,其中,一个预电离电容器Cpp的一个连接部分连接到一个预电离电极4,另一个连接部分与前一个电容器Cpp连接在一个电容器C2和一个磁性开关AL2之间。 在脉冲激光器10的放电电路中,与电容器C2的充电同步地充电的前置电位电容器Cpp的电压Vcc比主放电的开始时刻t6比预先设定的时间早一点 主放电电极1,2,当前置电极4的电压通过预电离电容器Cpp增加到预定的起始电压时,通过由前置电极4和主放电产生的电晕放电来预处理主放电间隙3 由主放电间隙3完全预先被主放电电极1,2引起。
    • 10. 发明授权
    • Discharge device for pulsed laser
    • 脉冲激光放电装置
    • US06535540B1
    • 2003-03-18
    • US09660830
    • 2000-09-13
    • Yasufumi KawasujiTakashi Matsunaga
    • Yasufumi KawasujiTakashi Matsunaga
    • H01S3097
    • H01S3/09713H01S3/0384H01S3/09702
    • In a preionization discharge circuit 10, when a switch SW14 is turned on, an electric current i10 from a constant current source 13 flows through a loop of a coil L12, en electrode 11A and the switch SW14. When it is assumed that an inductance of the coil L12 is L (H) and the current i10 flowing through the coil L12 is I (A), energy EL of (1/2)·L·I{circumflex over ( )}2 is accumulated in the coil 12. Meanwhile, in a preionization discharge control section 40, a preionization discharge timing signal (namely, a corona emission timing signal) Ydt is output to the switch SW14 after lapse of a time ty (=Tds−tyd) after a pulse oscillation synchronizing signal TRL is received so that preionization discharge is caused earlier by a preset time tyd than the preionization discharge timing signal Ydt. When the switch SW14 is switched from on to off according to the corona emission timing signal Ydt, the energy EL accumulated in the coil L12 is abruptly supplied to the electrode 11A of the preionization electrode 11. Then, an electric field is produced between the electrode 11A and an electrode plate 11C and, when the electric field of the preionization electrode 11 rises to a predetermined preionization start electric field, a corona discharge is produced in a tube 11B as a dielectric of the preionization electrode 11 to flow an electric current i11, and a main discharge gap 3 is preionized before the main discharge is caused by main discharge electrodes 1 and 2.
    • 在预电离放电电路10中,当开关SW14导通时,来自恒流源13的电流i10流过线圈L12,电极11A和开关SW14的环路。 当假定线圈L12的电感为L(H)且流过线圈L12的电流i10为I(A)时,(1/2).LI 2的能量EL累积在线圈12中。同时 在预电离放电控制部分40中,在脉冲振荡同步信号TRL是在时间t(= Tds-tyd)之后经过时间ty(= Tds-tyd)之后,将初级放电定时信号(即,电晕发射定时信号)Ydt输出到开关SW14 被接收,使得比放电前放电定时信号Ydt预设时间tyd更早地产生预电离放电。 当根据电晕发射定时信号Ydt将开关SW14从接通切换到断开时,累积在线圈L12中的能量EL突然提供给前置电极11的电极11A。然后,在电极 11A和电极板11C,并且当预电离电极11的电场上升到预定的起始电场时,在作为前电极11的电介质的管11B中产生电流放电,以流过电流i11, 并且在主放电电极1和2引起主放电之前,将主放电间隙3预先放电。