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    • 1. 发明授权
    • Laser apparatus
    • 激光设备
    • US5631917A
    • 1997-05-20
    • US604831
    • 1996-02-22
    • Makoto OgawaYasushi Matsuda
    • Makoto OgawaYasushi Matsuda
    • H01S3/042H01S3/00H01S3/04H01S3/102H01S3/30
    • H01S3/042H01S3/0407
    • To adapt temperature control of a secondary cooling water to the temperature of a primary cooling water: A control apparatus computes duty factor D from measured open time period T.sub.ON and closed time period T.sub.OFF of a solenoid valve (step B3) for each cycle of the solenoid valve operation (step B2). The apparatus classifies the computed duty factor into one of a plurality of predetermined ranges and conditionally updates the reference temperature Pt of the secondary cooling water based on the classification (B5, B6, B7). If the reference temperature has reached an upper limit P.sub.MAX and if the duty factor has exceeded an upper limit, e.g., 95 percent (B8), the apparatus stops the operation of a laser oscillator and provides an alarm.
    • 使二级冷却水的温度控制适应于初级冷却水的温度:控制装置根据测量的开放时间段TON和电磁阀的每个循环的电磁阀的闭合时间段TOFF(步骤B3)计算占空系数D 阀门操作(步骤B2)。 该装置将计算出的占空因数分类为多个预定范围之一,并基于分类(B5,B6,B7)有条件地更新二次冷却水的参考温度Pt。 如果参考温度已经达到上限PMAX,并且如果占空比已经超过上限(例如95%(B8)),则该装置停止激光振荡器的操作并提供警报。
    • 9. 发明授权
    • Fiber laser beam processing apparatus
    • 光纤激光束处理装置
    • US07436863B2
    • 2008-10-14
    • US11653892
    • 2007-01-17
    • Yasushi MatsudaHidenori ShimadaKouichi YaginumaShingo Tanaka
    • Yasushi MatsudaHidenori ShimadaKouichi YaginumaShingo Tanaka
    • H01S3/30
    • H01S3/1312H01S3/067
    • A fiber laser beam processing apparatus is configured by a fiber laser oscillator, a laser power source unit, a laser beam injecting unit, a fiber transmission system, a laser beam irradiating unit, a processing table, etc. A portion of a fiber laser beam oscillated and outputted by the fiber laser oscillator is received by a photo diode for monitoring the power through a beam splitter. An output signal of the photo diode is sent to a laser power source unit. The power source unit receives the output signal of the photo diode as a feedback signal and controls a driving current or an excitation current to be supplied to a laser diode of a pumping unit such that the laser output of the fiber laser beam equals a set value.
    • 光纤激光束处理装置由光纤激光振荡器,激光源单元,激光束注入单元,光纤传输系统,激光束照射单元,处理台等构成。光纤激光束的一部分 由光纤激光振荡器振荡和输出的光电二极管通过分束器监测功率。 光电二极管的输出信号被发送到激光电源单元。 电源单元接收光电二极管的输出信号作为反馈信号,并控制向泵送单元的激光二极管提供的驱动电流或励磁电流,使得光纤激光束的激光输出等于设定值 。