公开(公告)号：US20060013274A1

公开(公告)日：2006-01-19

申请号：US11176349

申请日：2005-07-08

申请人： Yuji Nishikawa ,  Hiroyuki Yoshida ,  Hisatada Machida ,  Akihiko Nishio ,  Ryusuke Miyata

发明人： Yuji Nishikawa ,  Hiroyuki Yoshida ,  Hisatada Machida ,  Akihiko Nishio ,  Ryusuke Miyata

IPC分类号： H01S3/04

CPC分类号： H01S3/04 ,  H01S5/02423

摘要： A laser unit using circulating cooling water, which may economically maintain the cleanliness of the cooling water and a channel for the cooling water. By a command of an operator, the activation of a water conveying device of the laser unit, the start of the laser oscillation, the stop of the laser oscillation and the stop of the conveying device are sequentially executed. When the laser unit is stopped for a relatively long period, an intermittent conveyance mode is automatically started in the laser unit. In this mode, the conveyance of the water starts after the passing of a first predetermined period of time and the conveyance stops after the passing of a second predetermined period of time. Similarly, the start and the stop of the conveyance of the water by the conveying device are alternately changed. When the laser oscillation should be started, the intermittent conveyance mode is terminated by the operator. The water conveyance device may be located within the laser unit or outside of a body of the laser unit.

摘要翻译： 使用循环冷却水的激光单元，其可以经济地保持冷却水的清洁度和冷却水的通道。 通过操作者的命令，依次执行激光单元的水输送装置的激活，激光振荡的开始，激光振荡的停止和输送装置的停止。 当激光单元停止相对长的时间时，在激光单元中自动开始间歇输送模式。 在这种模式中，水的输送在经过第一预定时间段之后开始，并且在经过第二预定时间段之后输送停止。 类似地，交替地改变由输送装置输送水的开始和停止。 当激光振荡开始时，操作员终止间歇输送模式。 水输送装置可以位于激光单元内或激光单元的主体的外侧。

公开(公告)号：US20050111504A1

公开(公告)日：2005-05-26

申请号：US10994613

申请日：2004-11-23

申请人： Yuji Nishikawa ,  Hiroyuki Yoshida ,  Hisatada Machida ,  Hiromitsu Takahashi ,  Soichi Arita

发明人： Yuji Nishikawa ,  Hiroyuki Yoshida ,  Hisatada Machida ,  Hiromitsu Takahashi ,  Soichi Arita

IPC分类号： B23K26/06 ,  B23K26/42 ,  G01J1/42 ,  H01S3/00 ,  H01S3/04 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H01S3/16

CPC分类号： H01S3/1312 ,  B23K26/702 ,  H01S3/04 ,  H01S3/1305 ,  H01S3/1643

摘要： A laser oscillator capable of executing a high-speed feedback control by reducing the control load of a main processor in the feedback control of the laser output. The laser is excited by an excitation source activated by one or more power supplies. The laser radiation is detected by a power sensor or a photodiode. A detected signal is A/D converted and fed to a sub processor or a high-speed DSP. The sub processor compares the current laser output value to a desired control value and calculates a deviation value in a predetermined period. The sub processor outputs a feedback signal to each of the power supplies according to a command from the main processor. Each power supply adjusts the supplied current to control the laser output. The main processor monitors conditions of the power supplies and controls a coolant circulation device. A factor regarding a load on a sequential control process, which may delay the feedback control, is eliminated and an analog circuit is unnecessary. The period time of the feedback control may be within 200 μs.

摘要翻译： 激光振荡器能够通过在激光输出的反馈控制中减小主处理器的控制负载来执行高速反馈控制。 激光由一个或多个电源激活的激发源激发。 激光辐射由功率传感器或光电二极管检测。 检测到的信号被A / D转换并馈送到子处理器或高速DSP。 子处理器将当前的激光输出值与期望的控制值进行比较，并在预定的周期内计算偏差值。 子处理器根据来自主处理器的命令向每个电源输出反馈信号。 每个电源调节供电电流以控制激光输出。 主处理器监控电源的状况并控制冷却液循环装置。 消除了可能延迟反馈控制的顺序控制过程上的负载的因素，并且不需要模拟电路。 反馈控制的周期时间可能在200μs以内。

公开(公告)号：US20060159140A1

公开(公告)日：2006-07-20

申请号：US11329168

申请日：2006-01-11

申请人： Hisatada Machida ,  Yuji Nishikawa ,  Ryusuke Miyata

发明人： Hisatada Machida ,  Yuji Nishikawa ,  Ryusuke Miyata

IPC分类号： H01S3/00 ,  H01S3/091

CPC分类号： H01S5/0021 ,  H01S3/0014 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/0941 ,  H01S3/1022 ,  H01S3/1611 ,  H01S3/1643 ,  H01S5/042 ,  H01S5/06808

摘要： A laser oscillator enabling estimation of the lifetime of the pump light source by a simple configuration, provided with a pump light source, a power source supplying current to the pump light source, a laser crystal outputting laser light by the pump light emitted from the pump light source, a power sensor receiving laser light generated from the laser crystal and outputting a signal corresponding to the intensity of the laser light, a memory storing the operating time of the laser oscillator, and a processor judging if the signal output by the power sensor satisfies a predetermined condition and, if satisfying the predetermined condition, uses the value of the current supplied by the power source to the pump light source and the operating time stored in the memory to estimate the lifetime of the pump light source.

摘要翻译： 一种激光振荡器，其能够通过设置有泵浦光源的简单配置来估计泵浦光源的寿命，向泵浦光源提供电流的电源，通过从泵发射的泵浦光输出激光的激光晶体 光源，接收从激光晶体产生的激光的功率传感器，并输出与激光的强度对应的信号;存储器，存储激光振荡器的工作时间;以及处理器，判断由功率传感器输出的信号 满足预定条件，并且如果满足预定条件，则使用由电源提供的电流对泵浦光源的值和存储在存储器中的操作时间来估计泵浦光源的寿命。

公开(公告)号：US20060092999A1

公开(公告)日：2006-05-04

申请号：US11258188

申请日：2005-10-26

申请人： Hisatada Machida ,  Hiroyuki Yoshida ,  Hiromitsu Takahashi ,  Yuji Nishikawa

发明人： Hisatada Machida ,  Hiroyuki Yoshida ,  Hiromitsu Takahashi ,  Yuji Nishikawa

IPC分类号： H01S3/00

CPC分类号： H01S3/0941 ,  H01S3/1312

摘要： A semiconductor-laser-pumped solid-state laser apparatus (11) which operates laser oscillation by exciting a solid-state laser medium (1) using a semiconductor laser (2) is described. The semiconductor-laser-pumped solid-state laser apparatus (11) has driving current switching means for switching, in accordance with an external control signal, a driving current between a state in which the driving current not less than an emission threshold value of the semiconductor laser is supplied to the semiconductor laser, and a state in which the driving current smaller than the emission threshold value of the semiconductor laser is supplied to the semiconductor laser. An external control apparatus sends an external control signal to a semiconductor-laser-pumped solid-state laser apparatus even if the laser radiation of the solid-state laser is stopped. Therefore, the electric power consumption of a laser machining system can be reduced and the lifetime of the semiconductor laser can be prolonged.

摘要翻译： 描述了通过使用半导体激光器（2）激励固态激光介质（1）来操作激光振荡的半导体激光泵浦固态激光装置（11）。 半导体激光泵浦固态激光装置（11）具有驱动电流切换装置，用于根据外部控制信号切换在不低于所述外部控制信号的发光阈值的驱动电流的状态之间的驱动电流 将半导体激光器提供给半导体激光器，并且将向半导体激光器提供小于半导体激光器的发光阈值的驱动电流的状态。 即使停止固体激光器的激光照射，外部控制装置也将外部控制信号发送到半导体激光泵浦固态激光装置。 因此，能够减少激光加工系统的耗电量，延长半导体激光器的寿命。