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：US20060114959A1

公开(公告)日：2006-06-01

申请号：US11285284

申请日：2005-11-23

申请人： Akira Egawa ,  Minoru Ando ,  Atsushi Mori

发明人： Akira Egawa ,  Minoru Ando ,  Atsushi Mori

IPC分类号： H01S3/03

CPC分类号： H01S3/09705 ,  H01S3/036 ,  H01S3/073

摘要： A gas laser oscillator (10) provided with voltage detecting means (4a to 4d) for detecting the voltage of each of a plurality of discharge tube segments (6a to 6d) of a discharge tube before start of discharge and a discharge tube segment start judging means (1) for judging if each of the plurality of discharge tube segments (6a to 6d) has started based on the voltage of the discharge tube segments (6a to 6d) detected by the voltage detecting means (4a to 4d), wherein the discharge tube segment start judging means (1) allows all of the plurality of discharge tube segments (6a to 6d) to start only when the voltages of all of the discharge tube segments (6a to 6d) of the plurality of discharge tube segments are smaller than a predetermined voltage (Vb) is provided. Due to this, it is possible to judge an abnormality in the laser gas before the start of discharge without any work on the part of the operator and thereby prevent the discharge tube from being damaged.

摘要翻译： 一种气体激光振荡器（10），其设置有用于检测在放电开始和放电之前放电管的多个放电管段（6a至6d）中的每一个的电压的电压检测装置（4a至4d） 管段开始判断装置（1），用于基于由电压检测装置检测的放电管段（6a至6d）的电压来判断多个放电管段（6a至6d）中的每一个是否已经开始 （4a至4d），其中放电管段开始判断装置（1）允许所有多个放电管段（6a至6d）中的所有放电管段（6a至6d）的所有放电管段 一个至6d）的多个放电管段都小于预定电压（Vb）。 由此，可以在开始放电之前判断激光气体在操作者的任何工作中的异常，从而防止放电管的损坏。

公开(公告)号：US20060044981A1

公开(公告)日：2006-03-02

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： G11B7/00

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：US20050220164A1

公开(公告)日：2005-10-06

申请号：US11094591

申请日：2005-03-31

申请人： Atsushi Mori ,  Akira Egawa

发明人： Atsushi Mori ,  Akira Egawa

IPC分类号： H01S3/00 ,  H01S3/081 ,  H01S3/08

CPC分类号： H01S3/081 ,  H01S3/005

摘要： A laser oscillator that can suppress astigmatism and achieve an axially symmetric laser beam output profile even when a spherical mirror is inserted between an output mirror and a rear mirror. Turning mirrors (plane mirrors) and spherical mirrors are arranged between the output mirror and the rear mirror so as to provide a zigzag round-trip optical path where the optical axes cross in the same plane. This configuration achieves the same effect as if lenses were arranged between the ends of a very long resonator, and the light-gathering performance of the laser beam may be controlled by the output mirror, the rear mirror and the curvatures of the respective turning mirrors. The positions and orientations of the spherical mirrors are determined so that the planes formed by the optical axis of the incident laser beam and the optical axis of the reflected laser beam on the respective spherical mirrors are perpendicular to each other, thereby offsetting the astigmatism and preventing the axial symmetry of the output laser beam profile from degrading. The angle of incidence of the laser beam axis on each spherical mirror may be set to 22.5 degrees or larger. Further, the turning mirrors may be replaced by a slab crystal.

摘要翻译： 激光振荡器，即使在将球面镜插入输出反射镜和后反射镜之间时也能抑制散光并实现轴向对称的激光束输出轮廓。 转向镜（平面镜）和球面镜布置在输出反射镜和后反射镜之间，以便提供光轴在同一平面上交叉的之字形往返光路。 这种结构实现了相同的效果，如果透镜布置在非常长的谐振器的端部之间，并且激光束的聚光性能可以由输出反射镜，后反射镜和各个转向镜的曲率来控制。 确定球面镜的位置和取向，使得由入射激光束的光轴和反射激光束的光轴在各个球面镜上形成的平面彼此垂直，从而抵消散光并防止 输出激光束轮廓的轴向对称性降低。 每个球面镜上的激光束轴的入射角可设定为22.5度或更大。 此外，转向镜可以由板状晶体代替。

公开(公告)号：US20070071057A1

公开(公告)日：2007-03-29

申请号：US11533168

申请日：2006-09-19

申请人： Kazuya Ohta ,  Akira Egawa ,  Atsushi Mori

发明人： Kazuya Ohta ,  Akira Egawa ,  Atsushi Mori

IPC分类号： H01S3/22 ,  H01S3/223

CPC分类号： H01S3/036 ,  G01H1/003 ,  G01M13/045 ,  H01S3/073

摘要： A blower (10) includes: at least two or at least three acoustic sensors or vibration sensors (31a to 31c) attached to a casing (12); and a position specifying means (34) for specifying a position of a source of abnormal sound or abnormal vibration from signals detected by the acoustic sensors or vibration sensors. When the position of the abnormal portion is specified in this way, a proper countermeasure can be taken quickly. Further, the blower (10) preferably includes an alarm output judging means (35) for judging whether or not an alarm should be outputted according to the position of the source of the abnormal sound or abnormal vibration specified by the position specifying means. A laser oscillator (100) having the blower (10) is also provided.

摘要翻译： 鼓风机（10）包括：附接到壳体（12）的至少两个或至少三个声学传感器或振动传感器（31a至31c）; 以及位置指定装置，用于根据由声学传感器或振动传感器检测到的信号来指定异常声音或异常振动源的位置。 当以这种方式指定异常部分的位置时，可以迅速采取适当的对策。 此外，鼓风机10优选地包括报警输出判断装置，用于根据由位置指定装置指定的异常声音或异常振动的源的位置来判断是否应该输出报警。 还提供了具有鼓风机（10）的激光振荡器（100）。

公开(公告)号：US20060114772A1

公开(公告)日：2006-06-01

申请号：US11289440

申请日：2005-11-30

申请人： Akira Egawa ,  Atsushi Mori

发明人： Akira Egawa ,  Atsushi Mori

IPC分类号： G11B7/00

CPC分类号： G02B27/0927 ,  B23K26/0734 ,  G02B5/001 ,  G02B27/0944 ,  G02B27/095

摘要： A laser processing device having an effect similar to that obtained by changing a focal length of a condensing lens. A part of a laser beam entering into a flat surface portion of the condensing lens is not condensed and radiated on a condensing point on a workpiece as a parallel beam. This part of the laser beam serves as an auxiliary beam in laser processing. On the other hand, the other part of the laser beam entering into a curved surface portion is condensed and radiated on or near the circumference of the condensing point.

摘要翻译： 具有与通过改变聚光透镜的焦距获得的效果相似的效果的激光加工装置。 入射到聚光透镜的平坦表面部分的激光束的一部分不会被冷凝并辐射在作为平行光束的工件上的聚光点上。 激光束的这一部分在激光加工中用作辅助光束。 另一方面，进入弯曲表面部分的激光束的另一部分被冷凝并辐射在聚光点的圆周上或附近。

公开(公告)号：US20060060571A1

公开(公告)日：2006-03-23

申请号：US11230653

申请日：2005-09-21

申请人： Atsushi Mori ,  Ryoma Okazaki ,  Minoru Ando

发明人： Atsushi Mori ,  Ryoma Okazaki ,  Minoru Ando

IPC分类号： B23K26/00

CPC分类号： H01S3/134 ,  B23K26/702 ,  B23K26/705 ,  H01S3/036 ,  H01S3/041 ,  H01S3/073 ,  H01S3/0975 ,  H01S3/10069

摘要： A laser apparatus (100) for performing the laser machining operation by condensing the laser light output from a laser oscillator (3) is disclosed. A laser output value calculation unit calculates a laser output value (L1) based on a command value (L0) issued to a laser oscillator (2). A temperature change estimating unit (31) estimates the temperature change or the temperature (Te) of specified component element(s) (7a, 7b) of the laser apparatus based on the elapsed time (t) and the laser output value calculated by the laser output value calculation unit. An adjusting unit (32) adjusts the conditions for controlling the laser or the conditions for laser machining based on the temperature change or the temperature of the specified component element estimated by the temperature change estimating unit. A stable laser machining operation is performed without a temperature sensor. The laser output value (L1) may be measured by a laser power sensor (5).

摘要翻译： 公开了一种通过使从激光振荡器（3）输出的激光聚光来进行激光加工的激光装置（100）。 激光输出值计算单元基于发出到激光振荡器（2）的指令值（L 0）来计算激光输出值（L 1）。 温度变化推定部（31）基于经过时间（t）和计算出的激光输出值，来估计激光装置的规定成分（7a，7b）的温度变化或温度（Te） 由激光输出值计算单元。 调整单元（32）基于由温度变化推定部估计出的规定成分要素的温度变化或温度来调整激光控制条件或激光加工条件。 在不使用温度传感器的情况下进行稳定的激光加工。 激光输出值（L 1）可以由激光功率传感器（5）测量。

公开(公告)号：US07257136B2

公开(公告)日：2007-08-14

申请号：US11230653

申请日：2005-09-21

申请人： Atsushi Mori ,  Ryoma Okazaki ,  Minoru Ando

发明人： Atsushi Mori ,  Ryoma Okazaki ,  Minoru Ando

IPC分类号： H01S3/121

CPC分类号： H01S3/134 ,  B23K26/702 ,  B23K26/705 ,  H01S3/036 ,  H01S3/041 ,  H01S3/073 ,  H01S3/0975 ,  H01S3/10069

摘要： A laser apparatus (100) for performing the laser machining operation by condensing the laser light output from a laser oscillator (3) is disclosed. A laser output value calculation unit calculates a laser output value (L1) based on a command value (L0) issued to a laser oscillator (2). A temperature change estimating unit (31) estimates the temperature change or the temperature (Te) of specified component element(s) (7a, 7b) of the laser apparatus based on the elapsed time (t) and the laser output value calculated by the laser output value calculation unit. An adjusting unit (32) adjusts the conditions for controlling the laser or the conditions for laser machining based on the temperature change or the temperature of the specified component element estimated by the temperature change estimating unit. A stable laser machining operation is performed without a temperature sensor. The laser output value (L1) may be measured by a laser power sensor (5).

摘要翻译： 公开了一种通过使从激光振荡器（3）输出的激光聚光来进行激光加工的激光装置（100）。 激光输出值计算单元基于发出到激光振荡器（2）的指令值（L 0）来计算激光输出值（L 1）。 温度变化推定部（31）基于经过时间（t）和计算出的激光输出值，来估计激光装置的规定成分（7a，7b）的温度变化或温度（Te） 由激光输出值计算单元。 调整单元（32）基于由温度变化推定部估计出的规定成分要素的温度变化或温度来调整激光控制条件或激光加工条件。 在不使用温度传感器的情况下进行稳定的激光加工。 激光输出值（L 1）可以由激光功率传感器（5）测量。

公开(公告)号：US11260667B2

公开(公告)日：2022-03-01

申请号：US16869914

申请日：2020-05-08

申请人： Yuuichiroh Uematsu ,  Ryohki Wakasa ,  Atsushi Mori

发明人： Yuuichiroh Uematsu ,  Ryohki Wakasa ,  Atsushi Mori

IPC分类号： B41J2/18 ,  B41J2/14 ,  B41J2/175

摘要： A liquid circulation device includes a circulation passage, a liquid feeding device, a pressure sensor, and control circuitry. Through the circulation passage, liquid circulates to be supplied to and collected from a circulatory liquid discharge head. The liquid feeding device is configured to circulate the liquid through the circulation passage. The pressure sensor is configured to detect a pressure of the circulation passage. The control circuitry configured to acquire a characteristic indicating a relationship among a drive amount of the liquid feeding device, discharge information of the liquid discharged from the liquid discharge head, and a pressure detection value of the circulation passage; and change, based on the characteristic acquired, at least one of a control parameter and a calculation expression used to control the liquid feeding device.

公开(公告)号：US09451116B2

公开(公告)日：2016-09-20

申请号：US14499733

申请日：2014-09-29

申请人： Atsushi Mori ,  Shinji Kato ,  Masaru Kumagai

发明人： Atsushi Mori ,  Shinji Kato ,  Masaru Kumagai

IPC分类号： G03G15/00 ,  H04N1/047 ,  H04N1/028

CPC分类号： G03G15/5041 ,  G03G15/5058 ,  H04N1/02885 ,  H04N1/047

摘要： An image forming apparatus includes a photoconductor, an optical scanner, a development device, a movable density sensor, a density sensor driver, and a processor. The optical scanner includes a light source to emit light, and irradiates a surface of the photoconductor in a main scanning direction with the light to form a latent image on the surface of the photoconductor. The development device develops the latent image into a toner image. The density sensor detects unevenness in density of the toner image in the main scanning direction. The density sensor driver moves the density sensor in the main scanning direction. The processor corrects a driving signal for the light source according to image data to reduce the unevenness in density in the main scanning direction, according to positional data of the density sensor in the main scanning direction and an output value of the density sensor.

摘要翻译： 图像形成装置包括光电导体，光学扫描器，显影装置，可移动密度传感器，密度传感器驱动器和处理器。 光学扫描器包括发光的光源，并且用光在主扫描方向上照射感光体的表面，以在感光体的表面上形成潜像。 显影装置将潜像显影成调色剂图像。 密度传感器检测调色剂图像在主扫描方向上的浓度不均匀。 密度传感器驱动器将密度传感器沿主扫描方向移动。 处理器根据图像数据校正光源的驱动信号，以根据密度传感器在主扫描方向上的位置数据和密度传感器的输出值来减小主扫描方向上的浓度不均匀性。