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    • 4. 发明授权
    • Laser oscillator apparatus and power supply apparatus therefor, and control method therefor
    • 激光振荡器装置及其电源装置及其控制方法
    • US07889772B2
    • 2011-02-15
    • US12282811
    • 2006-04-25
    • Toshiki KoshimaeToshiaki WatanabeTakeshi Morimoto
    • Toshiki KoshimaeToshiaki WatanabeTakeshi Morimoto
    • H01S3/00
    • H01S3/0941H01S3/0014H01S3/0602H01S3/0912H01S3/1022H01S3/1305H01S3/1312
    • A laser output power command determination value from a controller (17) is input to an upper limit current determination unit (32), and an upper limit current value to be decided based on the laser output power command determination value is determined. Then, a second comparator (30) compares a command current value determined from the laser output power command determination value and a laser output power command determination value measured with a power monitor (13), with an upper limit current value determined with a upper limit current determination unit (32). The second comparator (30) determines a command current value when the upper limit current value is greater than the command current value and the upper limit current value when the command current value is greater than the upper limit current value, as a reference current value, by which reference current value a current to be supplied to pumping means is configured to be controlled. In such a configuration, an upper limit current value is determined according to a laser output power command determination value, whereby an increased current to be supplied to the pumping means, i.e., the increase of energy to be supplied to a laser oscillator apparatus is avoided, and an energy loss in the optical component is reduced, which prevents damage development from leading to the replacement of the component.
    • 来自控制器(17)的激光输出功率指令确定值被输入到上限电流确定单元(32),并且确定将基于激光输出功率指令确定值来确定的上限电流值。 然后,第二比较器(30)将根据激光输出功率指令判定值确定的指令电流值与用功率监视器(13)测量的激光输出功率指令判定值与由上限确定的上限电流值进行比较 电流确定单元(32)。 当指令电流值大于上限电流值时,第二比较器(30)确定上限电流值大于指令电流值和上限电流值时的指令电流值作为参考电流值, 参考电流值被提供给泵送装置的电流被配置为被控制。 在这样的结构中,根据激光输出功率指令判定值来确定上限电流值,从而避免向泵送装置供给的增加的电流,即提供给激光振荡器装置的能量的增加 ,并且光学部件中的能量损失减小,这防止损坏发展导致部件的更换。
    • 5. 发明授权
    • Laser generator and method of controlling the same
    • 激光发生器及其控制方法
    • US07817690B2
    • 2010-10-19
    • US12095455
    • 2006-02-02
    • Toshiki KoshimaeTakeshi MorimotoToshiaki Watanabe
    • Toshiki KoshimaeTakeshi MorimotoToshiaki Watanabe
    • H01S3/00
    • H01S3/1312G02F1/3525H01S3/0014H01S3/0092H01S3/117H01S3/1305
    • A laser generator includes a generation means for pumping by a pumping light source (7) a pumping medium (3) to generate a fundamental-wave laser beam, an output sensor (6) for measuring average output power or pulse energy of the fundamental-wave laser beam, a wavelength-conversion element (5), arranged on an optical path for the fundamental-wave laser beam, for converting the fundamental-wave laser beam into its higher-harmonic-wave laser beam, and a controller (9) for memorizing a determination value set to a value lower than a breakage threshold for average output power or pulse energy of the laser beam converted by the wavelength-conversion element (5), and for, when the measurement value becomes not lower than the determination value, controlling the output power of the fundamental-wave laser beam to be a value lower than the breakage threshold; thereby, the beam intensity through the wavelength-conversion element (5) never exceeds the breakage threshold, and thus breakage of the wavelength-conversion element (5) can be prevented.
    • 激光发生器包括用泵浦光源(7)泵送泵送介质(3)以产生基波激光束的产生装置,用于测量基波激光束的平均输出功率或脉冲能量的输出传感器(6) 波长转换元件(5),布置在基波激光束的光路上,用于将基波激光束转换成其高次谐波激光束;以及控制器(9),其中, 用于存储设定为低于由波长转换元件(5)转换的激光束的平均输出功率或脉冲能量的破坏阈值的值的判定值,并且当测量值变得不低于确定值 将基波激光束的输出功率控制为低于破损阈值的值; 由此,通过波长转换元件(5)的光束强度不会超过断裂阈值,因此可以防止波长转换元件(5)的断裂。
    • 8. 发明申请
    • Power supply apparatus
    • 电源设备
    • US20070165433A1
    • 2007-07-19
    • US11651299
    • 2007-01-08
    • Masao KatookaTetsuro IkedaKenzo DanjoTakeshi MorimotoHideo Ishii
    • Masao KatookaTetsuro IkedaKenzo DanjoTakeshi MorimotoHideo Ishii
    • H02M1/10
    • H02M1/10
    • One of a plurality of voltages is adapted to be applied to power supply terminals (2a, 2b, 2c). A rectifying circuit (6) rectifies the applied voltage and develops a rectified voltage between the output terminals (6a, 6b) thereof. Inverters (16a, 16b) are connected into one of a plurality of inverter connections between the rectifier output terminals (6a, 6b) in response to one of a plurality of inverter connection indicative signals. The inverter connections are set to correspond to respective ones of the plurality of voltages, so that a predetermined voltage can be applied to each inverter whichever one of the plurality of voltages is applied to the power supply terminals. An inverter connection indicative signal generating circuit (34) is manually operated to generate a desired one of the inverter connection indicative signals. A thyristor (8) is disposed between the rectifier output terminals (6a, 6b) and the inverters (16a, 16b). When one of the plurality of voltages is applied to the power supply terminals, a voltage detecting circuit (38) generates an inverter connection indicative signal corresponding to the voltage applied to the power supply terminals. A judging unit (26d) determines whether or not the inverter connection indicative signals from the voltage detecting circuit (38) and the inverter connection indicative signal generating circuit (34) match. When the two signals match, a thyristor control unit (26a) provides a CLOSE signal to the thyristor (8). When the two signals do not match, an alarm circuit (42) is activated.
    • 多个电压中的一个适于施加到电源端子(2a,2b,2c)。 整流电路(6)对施加的电压进行整流,并在其输出端子(6a,6b)之间产生整流电压。 响应于多个逆变器连接指示信号中的一个,逆变器(16a,16b)连接到整流器输出端子(6a,6b)之间的多个逆变器连接中的一个。 逆变器连接被设置为对应于多个电压中的相应电压,使得可以向每个逆变器施加预定电压,无论哪一个电压被施加到电源端子。 逆变器连接指示信号发生电路(34)被手动操作以产生期望的一个逆变器连接指示信号。 在整流器输出端子(6a,6b)和逆变器(16a,16b)之间设置晶闸管(8)。 当多个电压中的一个施加到电源端子时,电压检测电路(38)产生与施加到电源端子的电压相对应的反相器连接指示信号。 判断单元(26d)判定来自电压检测电路(38)和逆变器连接指示信号生成电路(34)的逆变器连接指示信号是否一致。 当两个信号匹配时,晶闸管控制单元(26a)向晶闸管(8)提供CLOSE信号。 当两个信号不匹配时,报警电路(42)被激活。
    • 9. 发明申请
    • Laser diode pumped solid-state laser oscillator and laser diode control method of the oscillator
    • 激光二极管泵浦固态激光振荡器和激光二极管的振荡器控制方法
    • US20070160098A1
    • 2007-07-12
    • US10587306
    • 2004-12-08
    • Takeshi Morimoto
    • Takeshi Morimoto
    • H01S3/00
    • H01S3/0941H01S3/061H01S3/07H01S3/09408H01S3/101H01S3/1022H01S3/1312H01S5/06825H01S5/4018
    • Plural LDs 6 are series-connected and pump a solid-state pumping medium 7. Each of bypass circuits 15 is connected in parallel to an associated one of the LDs 6. An operation of driving each of the bypass circuits 15 is controlled by a control circuit 14. A detection circuit 13 is provided corresponding to each of the LDs 6 and detects a short circuit failure and an open failure of each of the LDs 6 according to a voltage developed thereacross or the like. The detection circuit 13 and the control circuit 14 are connected to and are controlled by an LD shortcircuit control circuit 11. In a case where a failure of the LD is detected by the detection circuit 13, the LD shortcircuit control unit 11 determines the position of the failed LD to bypass electric current having flowed through the failed LD. Then, the control circuit 11 sends a signal to a predetermined control circuit 14 to thereby operate a predetermined bypass circuit 15. The LD shortcircuit control unit 11 determines the position of the LD, which is to be turned off, according to the position of the failed LD to improve a pointing deviation in the solid-state medium 7. Then, the control unit 11 sends a signal to the control circuit 14 to turn off this LD. Thus, the control unit 11 causes a predetermined bypass circuit 15 to operate thereby to turn off the predetermined LD.
    • 多个LD6串联连接并泵送固态泵送介质7。 旁路电路15中的每一个并联连接到相关的一个LD6。 驱动各旁路电路15的动作由控制电路14控制。 对应于LD6中的每一个设置检测电路13,根据其上产生的电压等检测LD6中的每一个的短路故障和开路故障。 检测电路13和控制电路14连接LD并由LD短路控制电路11控制。 在由检测电路13检测到LD的故障的情况下,LD短路控制单元11确定故障的LD旁路流过故障LD的电流的位置。 然后,控制电路11向预定的控制电路14发送信号从而操作预定的旁路电路15。 LD短路控制单元11根据故障LD的位置来确定要关闭的LD的位置,以改善固态介质7中的指示偏差。 然后,控制单元11向控制电路14发送一个信号以关闭该LD。 因此,控制单元11使预定的旁路电路15工作,从而关闭预定的LD。