公开(公告)号：US07496126B2

公开(公告)日：2009-02-24

申请号：US11700768

申请日：2007-02-01

申请人： Yoshitaka Kubo ,  Toshiyasu Shiomi ,  Akira Egawa ,  Kazuhiro Suzuki

发明人： Yoshitaka Kubo ,  Toshiyasu Shiomi ,  Akira Egawa ,  Kazuhiro Suzuki

IPC分类号： H01S3/22

CPC分类号： H01S3/036 ,  H01S3/10069 ,  H01S3/104

摘要： A gas laser oscillator includes a supply-side valve for regulating a laser gas supply to a gas chamber, an exhaust-side valve for regulating a laser gas exhaust from the gas chamber, a gas pressure measuring device for measuring a pressure in the gas chamber, and a control device functioning as a laser gas replacement measuring device. The control device makes a first measurement and a second measurement of the pressure in the gas chamber by a gas pressure measuring device at a predetermined time interval during the vacuuming or purging of the gas chamber, and determines the laser gas replacement amount per unit time during the laser oscillating operation, based on the results of the first and second measurements.

摘要翻译： 气体激光振荡器包括用于调节对气室的激光气体供应的供给侧阀，用于调节来自气室的激光气体排出的排气侧阀，用于测量气室中的压力的​​气体压力测量装置 以及用作激光气体置换测量装置的控制装置。 控制装置在气室的抽真空或吹扫期间，以预定的时间间隔，通过气体压力测量装置对气室中的压力进行第一次测量和第二次测量，并且确定每单位时间内的激光气体替换量 激光振荡操作，基于第一和第二测量的结果。

公开(公告)号：US20080253418A1

公开(公告)日：2008-10-16

申请号：US12081005

申请日：2008-04-09

申请人： Akira Egawa ,  Kiyoto Sudo ,  Kazuhisa Mizusako

发明人： Akira Egawa ,  Kiyoto Sudo ,  Kazuhisa Mizusako

IPC分类号： H01S3/00

CPC分类号： H01S5/0683 ,  H01S5/042 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/423 ,  H04N9/3129 ,  H04N9/3161

摘要： A light source device includes: a plurality of laser light sources that emit laser light; and a light source driving section that drives at least one of the laser light sources by a first driving value that is a value less than a threshold level of at least one of the laser light sources, or by a second driving value that is a value greater than a threshold level of at least one of the laser light sources, and that varies at least one of the number of laser light sources that are driven by the first driving value and the number of laser light sources that are driven by the second driving value in the laser light sources, thereby controlling the total output of laser light emitted from the laser light sources.

摘要翻译： 光源装置包括：发射激光的多个激光光源; 以及光源驱动部，其以至少一个所述激光源的阈值以下的第一驱动值或者作为值的第二驱动值驱动所述激光源中的至少一个 大于激光光源中的至少一个的阈值水平，并且改变由第一驱动值驱动的激光光源的数量和由第二驱动驱动的激光光源的数量中的至少一个 从而控制从激光光源发射的激光的总输出。

公开(公告)号：US20080144681A1

公开(公告)日：2008-06-19

申请号：US12000267

申请日：2007-12-11

申请人： Akira Egawa ,  Minoru Ando ,  Hajime Ikemoto

发明人： Akira Egawa ,  Minoru Ando ,  Hajime Ikemoto

IPC分类号： H01S3/00

CPC分类号： H01S3/104 ,  H01S3/036 ,  H01S3/09702 ,  H01S3/09705 ,  H01S3/10069 ,  H01S3/134

摘要： A discharge excitation type gas laser oscillator has a discharge excitation unit for exciting a laser gas by discharge in a discharge tube to generate induced emission of laser light, a high-frequency power supply unit for supplying power to the discharge tube, and a controller unit for controlling output current of the high-frequency power supply unit. The laser oscillator further has an output detecting section that detects actual current value of the high-frequency power supply unit supplying power to the discharge tube at an arbitrary pressure lower than the high pressure during the steady-state operation, at the start of the laser oscillator, after the laser gas begins discharge excitation at a pressure lower than the high pressure during steady-state operation, an output comparison section that compares the detected actual current value with a normal current value that has been detected when the gas composition of the laser gas is normal at the same pressure as the actual current value is detected; and a power supply control section that discriminates, if the difference between the actual current value and the normal current value is equal to or greater than a preset value, that the gas composition of the laser gas is abnormal, and stops output of the high-frequency power supply unit.

摘要翻译： 放电励磁型气体激光振荡器具有放电激励单元，用于通过放电管中的放电来激发激光气体以产生激光的感应发射，用于向放电管供电的高频电源单元和控制器单元 用于控制高频电源单元的输出电流。 激光振荡器还具有输出检测部，其在稳态操作期间，在激光开始时，以低于高压的任意压力，检测向放电管供电的高频电源单元的实际电流值 振荡器，在激光气体在稳态运行期间在低于高压的压力下开始放电激励之后，输出比较部分将检测到的实际电流值与当激光的气体组成检测到的正常电流值进行比较 在与检测到实际电流值相同的压力下，气体正常; 以及电源控制部，其将实际电流值与正常电流值的差等于或大于预设值，判断为激光气体的气体成分异常， 高频电源单元。

公开(公告)号：US07348517B2

公开(公告)日：2008-03-25

申请号：US11197259

申请日：2005-08-05

申请人： Akira Egawa ,  Minoru Ando ,  Atsushi Mori

发明人： Akira Egawa ,  Minoru Ando ,  Atsushi Mori

IPC分类号： B23K26/06 ,  B23K26/38

CPC分类号： B23K26/38 ,  B23K26/06 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0665 ,  B23K26/14

摘要： A laser cutting apparatus capable of properly cutting a workpiece having a large thickness with a laser beam. The laser cutting apparatus includes a gas laser oscillator; and an optical system including a collective lens and transmitting and collecting a laser beam generated in the gas laser oscillator to irradiate a workpiece with the laser beam. An index M2 for evaluating a beam quality of the laser beam emerging from the optical system, with which the workpiece is irradiated, is in a range of 2.8 to 4.5; while the index M2 is defined by a formula: M2=π×(dm)2/(4×λ×Zr); in which λ is a wavelength of the laser beam; dm is a minimum beam diameter of the laser beam in a predetermined optical-path range including a focal point of the collective lens; and Zr is a distance between a first position on an optical axis, at which the minimum beam diameter dm is established, and a second position on the optical axis, at which a beam diameter “21/2×dm” is established, in the laser beam in the predetermined optical-path range.

摘要翻译： 一种能够用激光束适当地切割厚度大的工件的激光切割装置。 激光切割装置包括气体激光振荡器; 以及包括集体透镜的光学系统，并且传送和收集在气体激光振荡器中产生的激光束以用激光束照射工件。 用于评估从工件被照射的光学系统出射的激光束的光束质量的指标M 2在2.8至4.5的范围内; 而索引M 2由下式定义：M 2 = pix（dm）2 /（4xlambdaxZr）; 其中λ是激光束的波长; dm是包括集体透镜的焦点的预定光路范围内的激光束的最小光束直径; 并且Zr是在建立最小光束直径dm的光轴上的第一位置与光轴上的光束直径“2”1/2“之间的距离， xdm“在预定光路范围内的激光束中建立。

公开(公告)号：US20080062292A1

公开(公告)日：2008-03-13

申请号：US11844852

申请日：2007-08-24

申请人： Akira Egawa ,  Toshiharu Ueda

发明人： Akira Egawa ,  Toshiharu Ueda

IPC分类号： G06K9/32

CPC分类号： H04N5/374 ,  H04N5/3572 ,  H04N5/3651

摘要： An imaging apparatus includes an imaging area having, in a vertical direction, a plurality of lines having a plurality of pixels in a horizontal direction, wherein each of the plurality of lines includes an light-shielded area and an effective pixel area that is not light-shielded, a first correction unit configured to correct a shading component in the vertical direction that is included in an image signal from the effective pixel area of the plurality of lines, according to a first correction signal from the light-shielded area of the plurality of lines, and a second correction unit configured to correct the image signal output from the first correction unit according to a second correction signal obtained by multiplying the first correction signal, which is in the same line as the image signal, by a coefficient for decreasing a signal level of the first correction signal.

摘要翻译： 一种成像设备包括：成像区域，在垂直方向上具有在水平方向上具有多个像素的多条线，其中，所述多条线中的每一条线包括遮光区域和不亮的有效像素区域 第一校正单元，被配置为根据来自多个行的遮光区域的第一校正信号来校正来自多行的有效像素区域的图像信号中包括的垂直方向上的阴影分量 以及第二校正单元，被配置为根据通过将与图像信号在同一行中的第一校正信号乘以通过用于减小的系数而获得的第二校正信号来校正从第一校正单元输出的图像信号 第一校正信号的信号电平。

公开(公告)号：US20070180909A1

公开(公告)日：2007-08-09

申请号：US11655576

申请日：2007-01-19

申请人： Takeshi Uchiyama ,  Mitsuo Yarita ,  Akira Egawa

发明人： Takeshi Uchiyama ,  Mitsuo Yarita ,  Akira Egawa

IPC分类号： G01P9/04 ,  G01P1/04

CPC分类号： G01P15/125 ,  G01C19/56 ,  G01P15/18 ,  G01P2015/0842

摘要： An angular velocity sensor amplifies a plurality of detection signals using one amplifying circuit and properly separates these detection signals after amplification. The angular velocity sensor detects displacements of a mass in the respective axial directions using an x-axis detection circuit, a y-axis detection circuit and a z-axis detection circuit respectively. A carrier wave which has a phase thereof shifted from a phase of a carrier wave of the z-axis detection circuit by 90° is applied to the x-axis detection circuit and the y-axis detection circuit, wherein the application of the carrier wave to the x-axis detection circuit and the y-axis detection circuit is performed by switching based on a clock signals. Outputs of the respective axis detection circuits are collectively inputted to a current/voltage conversion circuit. An output signal of the current/voltage conversion circuit is inputted to three synchronous detection circuits, and an x-axis detection signal component, a y-axis detection signal component and a z-axis detection signal component are separated in the respective synchronous detection circuits. In the synchronous detection circuits, by applying phase division processing to the combined signal, the z-axis detection signal component is separated from cross axis detection signal components and, further, by applying time division processing to the signal components based on switching timing of the carrier wave, the x-axis detection signal component and the y-axis detection signal component are separated from each other.

摘要翻译： 角速度传感器使用一个放大电路放大多个检测信号，并在放大后适当地分离这些检测信号。 角速度传感器分别使用x轴检测电路，y轴检测电路和z轴检测电路来检测各轴向的质量位移。 将具有从z轴检测电路的载波相位偏移90°的相位的载波施加到x轴检测电路和y轴检测电路，其中载波的应用 并且通过基于时钟信号的切换来执行y轴检测电路。 各轴检测电路的输出被共同地输入到电流/电压转换电路。 电流/电压转换电路的输出信号被输入到三个同步检测电路，并且在各个同步检测电路中分离x轴检测信号分量，y轴检测信号分量和z轴检测信号分量 。 在同步检测电路中，通过对组合信号进行相位分割处理，将z轴检测信号分量与交叉轴检测信号分量分离，并且通过对基于信号分量的切换定时对信号分量进行时分处理 载波，x轴检测信号分量和y轴检测信号分量彼此分离。

公开(公告)号：US20070047610A1

公开(公告)日：2007-03-01

申请号：US11467029

申请日：2006-08-24

申请人： Akira Egawa ,  Minoru Ando ,  Hajime Ikemoto

发明人： Akira Egawa ,  Minoru Ando ,  Hajime Ikemoto

IPC分类号： H01S3/04 ,  H01S3/22

CPC分类号： H01S3/097 ,  H01S3/036 ,  H01S3/073 ,  H01S3/10069 ,  H01S3/134

摘要： A high-frequency discharge excited gas laser oscillator receiving power from a laser power supply controlled by a pulse command, the high-frequency discharge excited gas laser oscillator provided with a power detecting section for detecting supply power from the laser power supply to a discharge tube and a pulse command control section positioned at an upstream side of the laser power supply, comparing an allowable upper limit value of supply power found from a relationship between a discharge tube temperature and supply power and an actual supply power detected by the power detecting section, stopping the pulse command value to the discharge tube when the supply power is higher than the allowable upper limit value, and setting a pulse command value based on the allowable upper limit value.

摘要翻译： 一种高频放电激励气体激光振荡器，其从由脉冲命令控制的激光电源接收电力，所述高频放电激励气体激光振荡器设置有用于检测从激光电源向放电管供电的功率检测部 以及脉冲指令控制部，其位于所述激光电源的上游侧，将从放电管温度和供给电力之间的关系求出的供给电力的容许上限值与由所述功率检测部检测出的实际供给电力进行比较， 当供电功率高于允许上限值时，将放电管的脉冲指令值停止，并根据容许上限值设定脉冲指令值。

公开(公告)号：US07154925B2

公开(公告)日：2006-12-26

申请号：US10765877

申请日：2004-01-29

申请人： Akira Egawa ,  Minoru Ando

发明人： Akira Egawa ,  Minoru Ando

IPC分类号： H01S3/00

CPC分类号： H01S3/0326 ,  H01S3/036 ,  H01S3/0384 ,  H01S3/041 ,  H01S3/073 ,  H01S3/08045 ,  H01S3/104 ,  H01S2301/20

摘要： A gas laser oscillator of easy maintenance which is capable of switching a beam mode at high speed. Electric discharge sections in which gas medium is flown are formed in an optical resonating space in an electric discharge tube between a rear mirror and an output mirror. Electrodes are connected to electric discharge power sources (alternating current or direct current power sources). Coils are wound around the electric discharge tube at the respective electric discharge sections and excited by coil excitation circuits. Directions and intensities of the excitation currents from the coil excitation circuits are controlled by a controller. Regions in which the electric discharge currents flow between the electrodes in the respective electric discharge sections are varied by magnetic fields generated by the coils in accordance with the directions and intensities of the excitation currents of the coils, to thereby control the beam mode.

摘要翻译： 一种易于维护的气体激光振荡器，能够高速切换光束模式。 在后反射镜和输出镜之间的放电管的光学谐振空间中形成有气体介质流动的放电部。 电极连接到放电电源（交流电或直流电源）。 线圈在各个放电部分缠绕在放电管周围并被线圈激励电路激励。 来自线圈励磁电路的励磁电流的方向和强度由控制器控制。 放电电流在各个放电部分的电极之间流动的区域根据线圈产生的磁场根据线圈的激励电流的方向和强度而变化，从而控制射束模式。

公开(公告)号：US20060274806A1

公开(公告)日：2006-12-07

申请号：US11443011

申请日：2006-05-31

申请人： Takanori Sato ,  Takafumi Murakami ,  Akira Egawa

发明人： Takanori Sato ,  Takafumi Murakami ,  Akira Egawa

IPC分类号： H01S3/22 ,  H01S3/223

CPC分类号： H01S3/036 ,  H01S3/104 ,  H01S3/2232

摘要： A gas laser apparatus including a laser oscillating section including a medium circuit allowing a medium gas to flow therethrough under pressure, and a gas-composition adjusting section for adjusting the composition of the medium gas flowing through the medium circuit of the laser oscillating section. The gas-composition adjusting section comprising a gas supply section for supplying several types of medium gases having different compositions to the medium circuit of the laser oscillating section with a flow rate of each of the medium gases being adjustable; a gas exhaust section for exhausting the medium gas from the medium circuit of the laser oscillating section; and a control section for controlling the gas supply section and the gas exhaust section, to adjust the composition of the medium gas flowing through the medium circuit, in accordance with an oscillation condition including at least one of an attribute of an object matter acted on by a laser beam oscillated by the laser oscillating section and the accuracy of action of the laser beam.

摘要翻译： 一种气体激光装置，包括具有允许中等气体在压力下流过的介质回路的激光振荡部，以及用于调整流过激光振荡部的介质电路的介质气体的成分的气体成分调整部。 气体成分调节部分包括一个气体供应部分，用于向每个介质气体的流量调节激光振荡部分的介质回路，提供不同组成的几种介质气体; 用于从激光振荡部的介质电路排出介质气体的排气部; 以及控制部分，用于控制气体供应部分和排气部分，以根据包括以下操作的物体的属性中的至少一个的振荡条件来调节流经介质回路的介质气体的组成： 由激光振荡部分振荡的激光束和激光束的作用精度。

公开(公告)号：US20050206918A1

公开(公告)日：2005-09-22

申请号：US11083303

申请日：2005-03-18

申请人： Akira Egawa ,  Kazuhiro Suzuki ,  Motohiko Sato

发明人： Akira Egawa ,  Kazuhiro Suzuki ,  Motohiko Sato

IPC分类号： H01S3/13 ,  H01S3/036 ,  H01S3/041 ,  H01S3/07 ,  H01S3/097 ,  H01S3/104 ,  H01S3/134 ,  G06F15/00 ,  G03F3/08

CPC分类号： H01S3/09705 ,  H01S3/036 ,  H01S3/041 ,  H01S3/073 ,  H01S3/09702 ,  H01S3/1305 ,  H01S3/134

摘要： A laser unit capable of suitably updating a correction coefficient for correcting a laser output command for a laser oscillator. Validation of input of an update activation signal for the correction coefficient (F1=1) or waiting is carried out by operation of a display, a keyboard or a switch or by inputting an external signal. Flag F2 indicating automatic running, flag F3 indicating laser beam output and flag F4 indicating a shutter condition are checked. The correction coefficient is set to “1” only when flags F2, F3 and F4 are all equal to zero. Further, a laser output reference command value is outputted and the correction coefficient is updated after a predetermined time. Otherwise, a message indicating a reason for prohibition of update of the correction coefficient is displayed on an indicator, flag F1 is set to zero and the process is terminated.

摘要翻译： 一种能够适当地更新用于校正激光振荡器的激光输出命令的校正系数的激光单元。 通过显示器，键盘或开关的操作或通过输入外部信号来执行用于校正系数（F 1 = 1）或等待的更新激活信号的输入的验证。 标志F 2表示自动运行，标志F 3表示激光束输出，标志F 4表示快门条件。 仅当标志F 2，F 3和F 4都等于零时，校正系数才被设置为“1”。 此外，输出激光输出参考指令值，并且在预定时间之后更新校正系数。 否则，在指示符上显示指示禁止更新校正系数的原因的消息，标志F 1被设置为零并且处理结束。