公开(公告)号：US07088761B2

公开(公告)日：2006-08-08

申请号：US10492049

申请日：2002-02-18

申请人： Nobuaki Iehisa

发明人： Nobuaki Iehisa

IPC分类号： H01S3/091 ,  H01S3/08 ,  B01K26/00

CPC分类号： B23K26/0613 ,  B23K26/0604 ,  B23K2103/02 ,  B23K2103/10 ,  B23K2103/12 ,  H01S3/005 ,  H01S3/2383 ,  H01S5/4025 ,  H01S5/4087

摘要： A laser system is constructed so that a solid-state laser beam emitted from an Nd:YAG laser unit and a laser diode beam emitted from a combining LD which oscillates in a wavelength range shorter than that of the solid-state laser beam are combined by a dichroic beam splitter, the resultant beam is guided to an optical fiber, and a workpiece is irradiated with the combining LD beam and the solid-state laser beam with absolute irradiation positions and irradiation shapes of the beams almost matched each other. Thus, problems of high cost and high power consumption of the laser system due to low energy conversion efficiency, which become problems in a high-output high-luminance solid-state laser unit can be solved.

摘要翻译： 激光系统被构造成使得从Nd：YAG激光器单元发射的固态激光束和从组合LD发射的激光二极管束在比固态激光束的波长短的波长范围内振荡的光束通过 二向色光束分离器，合成的光束被引导到光纤，并且用绝对照射位置和光束的照射形状的组合LD光束和固态激光束照射工件几乎彼此匹配。 因此，可以解决在高输出高亮度固体激光器单元中成为问题的由于低能量转换效率导致的激光系统的高成本和高功耗的问题。

公开(公告)号：US5084885A

公开(公告)日：1992-01-28

申请号：US465267

申请日：1990-03-30

申请人： Nobuaki Iehisa ,  Etsuo Yamazaki

发明人： Nobuaki Iehisa ,  Etsuo Yamazaki

IPC分类号： B23K26/08 ,  H01S3/036 ,  H01S3/041

CPC分类号： H01S3/036

摘要： An NC laser device is provided which is a combination of a gas laser oscillator having a cooling mechanism for forcibly cooling a laser gas by a blower and a cooling unit, and a numerical control device. The NC laser device includes a gas temperature measuring device for measuring a gas temperature at an inlet of the blower, a casing temperature measuring device for measuring a temperature of a casing of the blower, and an abnormality detecting device, etc. The abnormality detecting device detects an abnormal state of the cooling mechanism, and stops the operation of the gas laser oscillator, when the inlet gas temperature or the casing temperature becomes higher than the respective reference value. Accordingly, an abnormal state of the cooling mechanism can be detected at an early stage, and thus secondary damage to the blower can be prevented.

公开(公告)号：US4956846A

公开(公告)日：1990-09-11

申请号：US320307

申请日：1989-02-22

申请人： Nobuaki Iehisa

发明人： Nobuaki Iehisa

IPC分类号： B23K26/00 ,  H01S3/036 ,  H01S3/097

CPC分类号： H01S3/036

摘要： A gas laser device for effecting a laser oscillation while circulating a laser gas is disclosed, the gas laser device comprising a laser gun supply unit (5), a gas supply valve (6) provided at the outlet of the laser gas supply unit, an exhaust unit (9) for exhausting the laser gas in a discharge tube, a pressure sensor (7), a gas cylinder replacement check switch (5a), a control unit (10) and the like, wherein the control unit (10) exhausts the air after closing the gas supply valve, introduces a laser gas by opening the gas supply valve after the laser oscillator has been brought to a vacuum state, and effects a vacuum exhausting of the laser oscillator after closing the gas supply valve, whereby air in a pipe is exhausted from the oscillator when a gas cylinder is replaced to eliminate such disadvantages as a reduced laser output, and an unstable laser output, and the like.

公开(公告)号：US07215689B2

公开(公告)日：2007-05-08

申请号：US10492366

申请日：2002-02-18

申请人： Nobuaki Iehisa

发明人： Nobuaki Iehisa

IPC分类号： H01S3/10 ,  H01S3/13 ,  H01S3/00

CPC分类号： B23K26/24 ,  B23K26/064 ,  B23K26/0853 ,  B23K26/702 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1312 ,  H01S3/1643 ,  H01S5/0428 ,  H01S5/0617 ,  H01S5/0683

摘要： 1. A pulse oscillating type solid laser unit that has a laser unit body whose exciting source is a laser diode that emits light in a principal energy absorbing spectrum of a solid laser activated media, and characterized by that prior to radiating laser light outside the laser unit body as a calibrating operation of a pulse laser output value, specified several varieties of rectangle pulse current values are conducted to a laser diode inside the pulse oscillating type solid laser unit so as to pulse-oscillate the laser unit body, a mean laser output value in each rectangle pulse current value is measured by the use of a laser output measuring instrument arranged inside the laser unit body so as to obtain a mean laser output value data, and in case that the laser output light is radiated outside the laser unit body, a pulse current value linear-predicted based on an obtained mean output value data is conducted to the laser diode so as to obtain a desired pulse laser output value.

摘要翻译： 1.一种脉冲振荡型固体激光器单元，其具有激光单元体，其激励源是激光二极管，其在固体激光活化介质的主能量吸收光谱中发光，并且其特征在于，在激光外部照射激光 单位体作为脉冲激光输出值的校准操作，将脉冲振荡式固体激光器内部的激光二极管指定几种矩形脉冲电流值，以脉冲振荡激光单元体，平均激光输出 通过使用布置在激光单元体内部的激光输出测量仪器来测量每个矩形脉冲电流值中的值，以获得平均激光输出值数据，并且在激光输出光辐射到激光单元体外部的情况下 基于获得的平均输出值数据线性预测的脉冲电流值被传送到激光二极管，以获得期望的脉冲激光输出值。

公开(公告)号：US5893987A

公开(公告)日：1999-04-13

申请号：US374755

申请日：1995-02-07

申请人： Etsuo Yamazaki ,  Nobuaki Iehisa ,  Kazuhiro Suzuki

发明人： Etsuo Yamazaki ,  Nobuaki Iehisa ,  Kazuhiro Suzuki

IPC分类号： B23K26/00 ,  B23K26/38 ,  G05B19/408 ,  H01S3/09 ,  H01S3/10 ,  H01S3/102

CPC分类号： G05B19/408 ,  B23K26/382 ,  G05B2219/35395 ,  G05B2219/45165 ,  G05B2219/49353

摘要： A laser output control system responsive to a command signal from a CNC, which is capable of sharply reducing time required for transfer of waveform data from the CNC in executing laser-beam machining. An output control device, upon receiving the command signal from the CNC, reads registration data and a set of waveform data stored in advance in one of the registers and a memory of an output control circuit, respectively, and then multiplies a peak value of a specified set of waveform data by a waveform scale factor and an override value set in advance to a PMC to form the waveform data into a waveform having a desired peak value. Then, by the use of a frequency and the number of times of output of the registration data, a repetition period and the number of repetitions of the set of waveform data are determined. The output control device delivers an output waveform thus determined to a power supply for a laser oscillator.

摘要翻译： PCT No.PCT / JP96 / 00980 Sec。 371日期：1995年2月7日 102（e）1995年2月7日PCT PCT。1994年6月16日PCT公布。 公开号WO95 / 01851 日期1995年1月19日激光输出控制系统响应于CNC的命令信号，能够大幅度减少在执行激光束加工时从CNC传送波形数据所需的时间。 输出控制装置在接收到来自CNC的命令信号时，分别读取登记数据和一组预先存储在寄存器之一中的波形数据和输出控制电路的存储器，然后将峰值 指定的波形数据集合通过波形比例因子和超前值预先设置到PMC以将波形数据形成具有期望峰值的波形。 然后，通过使用频率和登记数据的输出次数，确定重复周期和该组波形数据的重复次数。 输出控制装置将如此确定的输出波形传送到激光振荡器的电源。

公开(公告)号：US07653103B2

公开(公告)日：2010-01-26

申请号：US11785620

申请日：2007-04-19

申请人： Nobuaki Iehisa

发明人： Nobuaki Iehisa

IPC分类号： H01S3/00 ,  H01S3/13

CPC分类号： B23K26/24 ,  B23K26/064 ,  B23K26/0853 ,  B23K26/702 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1312 ,  H01S3/1643 ,  H01S5/0428 ,  H01S5/0617 ,  H01S5/0683

摘要： A pulse oscillating type solid laser unit that has a laser unit body whose exciting source is a laser diode that emits light in a principal energy absorbing spectrum of a solid laser activated media, and characterized by that prior to radiating laser light outside the laser unit body as a calibrating operation of a pulse laser output value, specified several varieties of rectangle pulse current values are conducted to a laser diode inside the pulse oscillating type solid laser unit so as to pulse-oscillate the laser unit body, a mean laser output value in each rectangle pulse current value is measured by the use of a laser output measuring instrument arranged inside the laser unit body so as to obtain a mean laser output value data, and in case that the laser output light is radiated outside the laser unit body, a pulse current value linear-predicted based on an obtained mean output value data is conducted to the laser diode so as to obtain a desired pulse laser output value.

摘要翻译： 一种脉冲振荡型固体激光器单元，其具有激光单元体，其激励源为激光二极管，其以固体激光活化介质的主能量吸收光谱发光，其特征在于，在激光单元体外部照射激光 作为脉冲激光输出值的校准操作，将脉冲振荡型固体激光器单元内的激光二极管指定若干种矩形脉冲电流值，以脉冲振荡激光单元体，平均激光输出值 通过使用布置在激光单元体内的激光输出测量仪器来测量每个矩形脉冲电流值，以获得平均激光输出值数据，并且在激光输出光照射到激光单元体外部的情况下， 基于获得的平均输出值数据线性预测的脉冲电流值被传送到激光二极管，以获得期望的脉冲激光输出值。

公开(公告)号：US6097747A

公开(公告)日：2000-08-01

申请号：US101020

申请日：1998-09-14

申请人： Nobuaki Iehisa ,  Hitoshi Enokizono

发明人： Nobuaki Iehisa ,  Hitoshi Enokizono

IPC分类号： H01S3/097 ,  H01S3/104 ,  H01S3/00

CPC分类号： H01S3/097 ,  H01S3/09702 ,  H01S3/09705 ,  H01S3/104

摘要： A gas discharge excitation laser device having an improved response of an actual output to transition from a laser output ON command to a laser output OFF command. When a command output is switched from ON to OFF at time it2 after passing an ON period Ton, an output command voltage Voc is once suddenly reduced to an OFF-period bottom value Vbott lower than a value VB1 which is suitable for maintaining a base discharge current when laser gas is cold, and then is increased to the value VB1 in a period .tau.. Thus, the actual output is permitted to be instantly interrupted without stopping the discharge. Vbott is a function of .eta.=(Pc/Pmax).times.Beam ON period, and is gradually reduced to a lower-limit clamp value VB2. Vbott(.eta.)=VB1-[(VB1-VB2)/.eta.B2].eta. (where 0.ltoreq..eta..ltoreq..eta.B), Vbott(.eta.)=VB2 (where .eta.>.eta.B). In the equations, Pc is a laser output during the beam ON period, Pmax is a maximum rated laser output, and .eta.B2 is a value of .eta. when Vbott(.eta.) is reduced to VB2.

摘要翻译： PCT No.PCT / JP97 / 03935 Sec。 371日期：1998年9月14日 102（e）1998年9月14日PCT PCT 1997年10月29日PCT公布。 WO98 / 19374 PCT出版物 日期1998年5月7日一种气体放电激发激光装置，其具有实际输出对从激光输出ON命令转换到激光输出OFF命令的响应的改善。 当在通过ON期间Ton之后的时刻it2将命令输出从ON切换到OFF时，输出指令电压Voc一度突然降低到低于适合于维持基极放电的值VB1的OFF周期底部值Vbott 激光气体冷时的电流，然后在τ期间增加到值VB1。 因此，实际输出被允许立即中断而不停止放电。 Vbott是eta =（Pc / Pmax）xBeam ON周期的函数，逐渐减小到下限钳位值VB2。 Vbott（eta）= VB1 - [（VB1-VB2）/ eta B2] eta（其中0 = eta B），Vbott（eta）= VB2（其中eta> eta B）。 在等式中，Pc是光束ON期间的激光输出，Pmax是最大额定激光输出，eta B2是Vbott（eta）降低到VB2时的eta值。

公开(公告)号：US5278860A

公开(公告)日：1994-01-11

申请号：US952087

申请日：1992-09-28

申请人： John L. August, Jr. ,  Mark J. Kukla ,  Todd J. Rockstroh ,  Nobuaki Iehisa

发明人： John L. August, Jr. ,  Mark J. Kukla ,  Todd J. Rockstroh ,  Nobuaki Iehisa

IPC分类号： H01S3/02 ,  H01S3/06 ,  H01S3/092 ,  H01S3/093

CPC分类号： H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/093

摘要： This invention relates to face-pumped slab lasers of the type that have laser head assemblies constructed of individual components, which are rigidly attached together, in order to form an integral structure. Such structures of this type, generally, allow a face-pumped slab laser component to be assembled and disassembled easily and quickly.

摘要翻译： 本发明涉及具有刚性地连接在一起的各个部件构成的激光头组件的类型的面部泵浦平板激光器，以便形成一体的结构。 这种类型的这种结构通常允许面部泵送的平板激光器部件容易且快速地组装和拆卸。

公开(公告)号：US5059760A

公开(公告)日：1991-10-22

申请号：US548988

申请日：1990-07-30

申请人： Nobuaki Iehisa ,  Etsuo Yamazaki

发明人： Nobuaki Iehisa ,  Etsuo Yamazaki

IPC分类号： B23K26/00 ,  B23K26/03 ,  B23K26/42

CPC分类号： B23K26/032 ,  B23K26/702

摘要： A laser beam machining device for machining a workpiece by irradiating a laser beam onto a surface of a workpiece is provided, and comprises a power sensor (21) for detecting the level of a reflected laser beam (11) fed back to a laser oscillator due to a reflection thereof by the surface of the workpiece (10), and an abnormality detecting unit for stopping the operation of the laser oscillator and movement of the workpiece (10) and displaying an alarm at a display device (19) when the power level of the reflected laser beam (11) becomes higher than a predetermined value. The power level of the reflected laser beam (11) fed back to the laser oscillator is monitored by the power sensor (21), and when an abnormal reflection occurs, the monitored value becomes higher than the predetermined value and this increase is detected by the abnormality detecting unit, which then stops the operation of the laser oscillator and movement of one of the workpiece (10) and a nozzle, and displays an alarm at the display device (19).

公开(公告)号：US5043555A

公开(公告)日：1991-08-27

申请号：US445672

申请日：1989-11-22

申请人： Nobuaki Iehisa ,  Kazuhiro Suzuki

发明人： Nobuaki Iehisa ,  Kazuhiro Suzuki

IPC分类号： B23K26/00 ,  B23K26/06 ,  G05B19/18 ,  G05B19/4063 ,  G05B19/4069 ,  H01S3/00

CPC分类号： G05B19/4069 ,  B23K26/083 ,  G05B19/4063 ,  G05B2219/45165

摘要： An NC laser device which is a combination of a numerical control apparatus and a laser machining device is provided, and which includes a measuring means for measuring a laser oscillation time and a power measuring means (19) for measuring a laser output power, etc. When the oscillation time is shorter than a predetermined time based on the life of optical components and an output power drop rate is higher than a specified value a message warning that the optical components (5,6) of the device must be cleaned is displayed on a display (18). When the laser oscillation time is longer than the predetermined time and the output power drop rate is higher than the specified value, a message warning that the optical components (5,6) must be replaced is displayed on the display (18), whereby the maintenance of the device is facilitated and the life of the optical components is prolonged.