公开(公告)号：US6046812A

公开(公告)日：2000-04-04

申请号：US166418

申请日：1998-10-05

申请人： Sung-Hoon Baik ,  Seung-Kyu Park ,  Cheol-Jung Kim

发明人： Sung-Hoon Baik ,  Seung-Kyu Park ,  Cheol-Jung Kim

IPC分类号： G01B11/25 ,  G01B11/24

CPC分类号： G06T7/0057 ,  G01B11/25

摘要： The present invention relates to an apparatus for measuring surface relief profile of an object by projecting a line-shaped laser sheet beam in triangulation method and anisotropic magnification optics for improving the measurement resolution. The purpose of the present invention is to provide a system or an apparatus capable of measuring relief profiles with anisotropic magnification optics composed with one or more positive and one or more negative cylindrical lenses, which allows it to obtain magnified images along the direction vertical to the length-wise direction of the image of a line-shaped laser sheet beam for higher resolution in the relief profile measurements along the direction parallel to the length-wise direction of a line-shaped laser sheet beam image to measure the same range of area as the range without anisotropic magnification optics.

摘要翻译： 本发明涉及一种用于通过在三角测量方法和各向异性放大光学器件中投射线状激光束光束来改善测量分辨率来测量物体的表面凹凸轮廓的装置。 本发明的目的是提供一种能够利用由一个或多个正的和一个或多个负的柱面透镜组成的各向异性放大光学元件来测量浮雕轮廓的系统或装置，这允许它沿垂直于 沿着平行于线状激光束光束图像的长度方向的方向的平面轮廓测量中的用于更高分辨率的线状激光片光束的图像的长度方向，以测量与 无范围放大光学范围。

公开(公告)号：US06555780B1

公开(公告)日：2003-04-29

申请号：US10006140

申请日：2001-12-10

申请人： Cheol-Jung Kim ,  Sung-Hoon Baik ,  Min-Suk Kim ,  Chin-Man Chung

发明人： Cheol-Jung Kim ,  Sung-Hoon Baik ,  Min-Suk Kim ,  Chin-Man Chung

IPC分类号： B23K2620

CPC分类号： B23K26/032 ,  B23K26/03 ,  B23K26/034

摘要： In a laser welding, a laser beam is focused on a workpiece by a focusing lens or lenses. The focusing lens or lenses image an aperture liming the size of the laser beam on the workpiece and the size of focused laser beam is the image size of the aperture on the workpiece at the wavelength of the laser. A weld pool is generated by the interaction of the focused laser beam and the workpiece. Due to the thermal conduction of the workpiece, the size of the weld pool is generally not the same as the size of the focused laser beam and varies with the power of the laser or with the focus shift of the focusing lens or lenses. The weld pool irradiates a thermal radiation. The thermal radiation is measured back through the focusing lens or lenses and through the aperture limiting the size of the laser beam or any other aperture limiting a size of the thermal radiation to be measured in three spectral bands with single element detectors. Due to the chromatic aberration of the focusing lens or lenses, the transmittance of each spectral band of the thermal radiation varies with the size variation and with the focus position of a weld pool and the spectral band signals measured with single-element detectors vary if the size and/or the focus position of a weld pool varies. However, the chromatic aberration of the focusing lens or lenses is usually unknown and is not easy to measure. A method to monitor the size variation and/or the focus position of a weld pool is disclosed wherein the effects of the chromatic aberration are measured experimentally and the size variation of a weld pool is monitored independently from the focus shift of the focusing lens or lenses and the focus position of a weld pool is monitored independently from the power variation of the laser.

摘要翻译： 在激光焊接中，激光束通过聚焦透镜聚焦在工件上。 聚焦透镜或透镜对激光束在工件上的尺寸进行成像，并且聚焦激光束的尺寸是在激光波长处工件上的孔径的图像尺寸。 焊池由聚焦激光束与工件的相互作用产生。 由于工件的热传导，熔池的尺寸通常与聚焦的激光束的尺寸不同，并随着激光的功率或聚焦透镜的聚焦偏移而变化。 焊接池照射热辐射。 通过聚焦透镜或透镜测量热辐射，并通过孔径限制激光束或任何其他孔径的尺寸，以单个元件检测器限制三个光谱带中待测量的热辐射的尺寸。 由于聚焦透镜或透镜的色差，热辐射的每个光谱带的透射率随着尺寸变化和焊池的焦点位置而变化，并且用单元件检测器测量的光谱带信号变化如果 焊池的尺寸和/或焦点位置不同。 然而，聚焦透镜或透镜的色差通常是未知的并且不容易测量。 公开了一种用于监测焊池的尺寸变化和/或焦点位置的方法，其中色差的影响通过实验测量，并且独立于聚焦透镜或聚焦透镜的聚焦偏移监测焊池的尺寸变化 并且独立于激光器的功率变化监测焊池的聚焦位置。

公开(公告)号：US06344625B1

公开(公告)日：2002-02-05

申请号：US09589134

申请日：2000-06-08

申请人： Cheol-Jung Kim ,  Sung-Hoon Baik ,  Min-Suk Kim ,  Chin-Man Chung

发明人： Cheol-Jung Kim ,  Sung-Hoon Baik ,  Min-Suk Kim ,  Chin-Man Chung

IPC分类号： B23K2620

CPC分类号： B23K26/032 ,  B23K26/034 ,  B23K26/04

摘要： In a laser welding, a laser beam is focused on a workpiece by a focusing lens or lenses. The focusing lens or lenses image an aperture liming the size of the laser beam on the workpiece and the size of focused laser beam is the image size of the aperture on the workpiece at the wavelength of the laser. A weld pool is generated by the interaction of the focused laser beam and the workpiece. Due to the thermal conduction of the workpiece, the size of the weld pool is generally not the same as the size of the focused laser beam and varies with the power of the laser or with the focus shift of the focusing lens or lenses. The weld pool radiates a thermal radiation. An apparatus and method is disclosed wherein the thermal radiation is measured back through the focusing lens or lenses and through the aperture limiting the size of the laser beam or any other aperture limiting a size of the thermal radiation to be measured in at least three spectral bands with single element detectors. Due to the chromatic aberration of the focusing lens or lenses, the transmittance of each spectral band of the thermal radiation varies with the size variation and with the focus position of a weld pool and the spectral band signals measured with single-element detectors vary if the size and/or the focus position of a weld pool varies. Algorithm to monitor the size variation and/or the focus position of a weld pool is disclosed wherein the size variation of a weld pool is monitored independently from the focus shift of the focusing lens or lenses and the focus position of a weld pool is monitored independently from the power variation of the laser.

摘要翻译： 在激光焊接中，激光束通过聚焦透镜聚焦在工件上。 聚焦透镜或透镜对激光束在工件上的尺寸进行成像，并且聚焦激光束的尺寸是在激光波长处工件上的孔径的图像尺寸。 焊池由聚焦激光束与工件的相互作用产生。 由于工件的热传导，熔池的尺寸通常与聚焦的激光束的尺寸不同，并随着激光的功率或聚焦透镜的聚焦偏移而变化。 焊接池辐射热辐射。 公开了一种装置和方法，其中通过聚焦透镜或透镜测量热辐射，并通过孔径限制激光束或任何其它孔径的尺寸，以限制在至少三个光谱带中待测量的热辐射的尺寸 与单元素检测器。 由于聚焦透镜或透镜的色差，热辐射的每个光谱带的透射率随着尺寸变化和焊池的焦点位置而变化，并且用单元件检测器测量的光谱带信号变化如果 焊池的尺寸和/或焦点位置不同。 公开了监测焊池的尺寸变化和/或焦点位置的算法，其中独立于聚焦透镜或透镜的聚焦位移监测焊池的尺寸变化，并且独立地监测焊池的聚焦位置 从激光的功率变化。

公开(公告)号：US06188041B1

公开(公告)日：2001-02-13

申请号：US09190234

申请日：1998-11-13

申请人： Cheol-Jung Kim ,  Min-Suk Kim ,  Sung-Hoon Baik ,  Chin-Man Chung

发明人： Cheol-Jung Kim ,  Min-Suk Kim ,  Sung-Hoon Baik ,  Chin-Man Chung

IPC分类号： B23K2600

CPC分类号： B23K26/034 ,  B23K26/04 ,  B23K26/0643 ,  B23K26/0665

摘要： A method and apparatus for real-time weld process monitoring are provided for a pulsed laser welding. The thermal radiation from a weld pool is measured at several spectral bands through an aperture with single-element detectors after splitting the spectral bands with dichromatic mirrors and beam splitters. The distal end of an optical fiber for laser delivery can be used as an aperture and each spectral band signal is measured with a single-element detector. Due to the chromatic aberration of an imaging optics, the field of view from a single-element detector through the aperture is varied by the wavelength of spectral band. The weld pool size contributing to the spectral band signal varies by the wavelength of the spectral band. The transmittance profile of each spectral band also depends on the focus shift of imaging optics. By processing the measured spectral band signals, the size of a weld pool, the power variation on a workpiece and the focus shift of imaging optics can be monitored simultaneously. Furthermore, the weld pool sizes at predetermined positions in time are correlated to the weld depth and the weld defect such as a weld gap for weld quality assurance.

摘要翻译： 为脉冲激光焊接提供了实时焊接过程监控的方法和装置。 在使用双色镜和分束器分割光谱带之后，通过具有单元件检测器的孔径在几个光谱带处测量来自熔池的热辐射。 用于激光输送的光纤的远端可以用作孔径，并且每个光谱带信号都用单元件检测器测量。 由于成像光学元件的色差，来自单元件检测器通过孔径的视场由光谱带的波长变化。 有助于光谱带信号的焊池尺寸随光谱带的波长而变化。 每个光谱带的透射率分布也取决于成像光学元件的聚焦偏移。 通过处理测量的光谱带信号，可以同时监测焊池的尺寸，工件上的功率变化和成像光学器件的聚焦偏移。 此外，预定位置的焊池尺寸与焊接深度和焊接缺陷（例如用于焊接质量保证的焊接间隙）相关。

公开(公告)号：US5875026A

公开(公告)日：1999-02-23

申请号：US763752

申请日：1996-12-11

申请人： Cheol-Jung Kim ,  Kwang-Suk Kim

发明人： Cheol-Jung Kim ,  Kwang-Suk Kim

IPC分类号： G01J1/06 ,  G01J1/42 ,  G01J1/28 ,  G01J3/46

CPC分类号： G01J1/42 ,  G01J1/06

摘要： A method and system is disclosed in which the local variation of an extended radiation source is monitored with single-element detector. The chromatic aberration of the imaging optics induces the different transmittance curves for different wavelengths, and the different shape in the transmittance curve is used as a spatial filter which is multiplied to the chromatic intensity profile of the extended radiation source to detect the local variation in the intensity profile of the extended radiation source. The signal processing of the chromatic signals is implemented to detect the size variation and the environmental effects on the extended radiation source. A fiber is also used for remote operation.

摘要翻译： 公开了一种方法和系统，其中利用单元件检测器监测扩展辐射源的局部变化。 成像光学器件的色差引起不同波长的不同透射率曲线，并且将透射率曲线中的不同形状用作空间滤波器，该空间滤波器与扩展辐射源的色度分布相乘以检测扩展辐射源中的局部变化 扩展辐射源的强度分布。 实施彩色信号的信号处理以检测尺寸变化和对扩展辐射源的环境影响。 光纤也用于远程操作。

公开(公告)号：US07323651B2

公开(公告)日：2008-01-29

申请号：US10522461

申请日：2002-09-18

申请人： Do-Young Jeong ,  Kwang-Hoon Ko ,  Gwon Lim ,  Cheol-Jung Kim

发明人： Do-Young Jeong ,  Kwang-Hoon Ko ,  Gwon Lim ,  Cheol-Jung Kim

IPC分类号： B01D5/00

CPC分类号： B01D59/34

摘要： A method for isotope separation of thallium using a laser beam comprising the steps of: (a) producing photons of a first frequency by a laser system, wherein a wave length of the first frequency is about 378 nm; (b) producing photons of a second frequency by the laser system, wherein a wave length of the second frequency is about 292 nm; (c) producing photons of a third frequency by the laser system, wherein a wave length of the third frequency is in the range of 700 nm to 1400 nm; (d) applying the photons of the first, second and third frequencies to the vapor of the thallium, wherein the photons of the first frequency pump isotope-selectively a plurality of ground state thallium atoms through an excited state into a metastable state, and wherein the photons of the second frequency excite a plurality of metastable state thallium atoms to an intermediate, resonant state, and wherein the photons of the third frequency ionize a plurality of atoms in the intermediate, resonant state through continuum states; and (e) collecting the isotope ions. Thallium isotope can efficiently be separated with small scale facilities.

摘要翻译： 一种使用激光束同位素分离铊的方法，包括以下步骤：（a）通过激光系统产生第一频率的光子，其中第一频率的波长约为378nm; （b）通过所述激光系统产生第二频率的光子，其中所述第二频率的波长为约292nm; （c）通过激光系统产生第三频率的光子，其中第三频率的波长在700nm至1400nm的范围内; （d）将第一，第二和第三频率的光子施加到铊的蒸汽，其中第一频率泵同位素的光子选择性地将多个基态铊原子通过激发态转化为亚稳态，并且其中 第二频率的光子将多个亚稳状态铊原子激发到中间的共振状态，并且其中第三频率的光子通过连续态电离处于中间共振状态的多个原子; 和（e）收集同位素离子。 铊同位素可以用小规模的设施有效分离。

公开(公告)号：US20050269198A1

公开(公告)日：2005-12-08

申请号：US10522461

申请日：2002-09-18

申请人： Do-Young Jeong ,  Kwang-Hoon Ko ,  Gwon Lim ,  Cheol-Jung Kim

发明人： Do-Young Jeong ,  Kwang-Hoon Ko ,  Gwon Lim ,  Cheol-Jung Kim

IPC分类号： C09C1/00 ,  B01D59/34 ,  C01G15/00 ,  H01S3/00 ,  B01D5/00

CPC分类号： B01D59/34

摘要： A method for isotope separation of thallium using a laser beam is disclosed. The method comprises the steps of: (a) producing photons of a first frequency by a laser system, wherein said first frequency is about 378 nm; (b) producing photons of a second frequency by said laser systems, wherein said second frequency is about 292 nm; (c) producing photons of a third frequency by said laser system, wherein said third frequency is in the range of 700 nm to 1400 nm; (d) applying said photons of said first, second and third frequencies to said vapor of said thallium, wherein said photons of said first frequency pump isotope-selectively a plurality of ground state thallium atoms through an excited state into a metastable state, and wherein said photons of said second frequency excite a plurality of metastable state thallium atoms to an intermediate, resonant state, and wherein said photons of said third frequency ionize a plurality of atoms in said intermediate, resonant state through continuum states; and (e) collecting said isotope ions. Thallium isotope can efficiently be separated with small scale facilities.

摘要翻译： 公开了一种使用激光束同位素分离铊的方法。 该方法包括以下步骤：（a）通过激光系统产生第一频率的光子，其中所述第一频率约为378nm; （b）由所述激光系统产生第二频率的光子，其中所述第二频率为约292nm; （c）通过所述激光系统产生第三频率的光子，其中所述第三频率在700nm至1400nm的范围内; （d）将所述第一，第二和第三频率的所述光子施加到所述铊的所述蒸气，其中所述第一频率泵的所述光子同位素选择性地将多个基态铊原子通过激发态转化为亚稳态，并且其中 所述第二频率的所述光子将多个亚稳状态铊原子激发到中间的共振状态，并且其中所述第三频率的所述光子以所述中间谐振状态的多个原子通过连续状态离子化; 和（e）收集所述同位素离子。 铊同位素可以用小规模的设施有效分离。

公开(公告)号：US5661745A

公开(公告)日：1997-08-26

申请号：US455415

申请日：1995-05-31

申请人： Cheol-Jung Kim ,  Jung-Moog Kim ,  Kwang-Suk Kim

发明人： Cheol-Jung Kim ,  Jung-Moog Kim ,  Kwang-Suk Kim

IPC分类号： H01S3/10 ,  H01S3/092 ,  H01S3/091

CPC分类号： H01S3/092

摘要： A method for generating high peak power pulses in lamp pumped continuous lasers by current mixing is disclosed, in which three kinds of oscillations, i.e., pure continuous wave laser oscillation, pure pulse laser oscillation and mixed laser oscillation of continuous wave and pulse lasers are attained without replacing any internal components of the laser. The current mixing is implemented by combining a high peak pulse current from pulse mode power supply and a DC current from the continuous wave laser power supply directly with isolating diodes, whereby a high peak power pulse equivalent to several scores of times the output of a continuous wave laser is simultaneously obtained.

摘要翻译： 公开了一种通过电流混合在灯泵浦连续激光器中产生高峰值功率脉冲的方法，其中获得连续波和脉冲激光器的纯连续波激光振荡，纯脉冲激光振荡和混合激光振荡三种振荡 而不用替换激光器的任何内部部件。 目前的混合是通过将来自脉冲模式电源的高峰值脉冲电流和来自连续波激光器电源的直流电流直接与隔离二极管组合来实现的，由此产生相当于连续波形输出数十倍的高峰值功率脉冲 同时获得波激光。

公开(公告)号：US07804801B2

公开(公告)日：2010-09-28

申请号：US12131617

申请日：2008-06-02

申请人： Yu-Ro Lee ,  Byung-Chan Kim ,  Minho Cheong ,  Chanho Yoon ,  Je-Hun Lee ,  Kwhang-Hyun Ryu ,  Cheol-Jung Kim ,  Tae-Hyun Jeon ,  Sok-Kyu Lee

发明人： Yu-Ro Lee ,  Byung-Chan Kim ,  Minho Cheong ,  Chanho Yoon ,  Je-Hun Lee ,  Kwhang-Hyun Ryu ,  Cheol-Jung Kim ,  Tae-Hyun Jeon ,  Sok-Kyu Lee

IPC分类号： H04W4/00

CPC分类号： H04L25/0246 ,  H04L25/03006 ,  H04L2025/03414 ,  H04L2025/03426

摘要： Provided are a QR decomposition apparatus and method for a MIMO system. The QR decomposition apparatus includes: a norm calculator for calculating a vector size norm for a channel input; a Q column calculator for calculating a column value of a unitary matrix Q by multiplying a delayed channel input with √{square root over (norm)}; an R row calculator for receiving the delayed channel input, the output of the Q column calculator, and 1/√{square root over (norm)}, and calculating a row value of an upper triangular matrix R; a Q update calculator for receiving the delayed channel input, the output of the R row calculator, and a delayed output of the Q column calculator, and calculating a Q update matrix value; and a norm update calculator for receiving a delayed output of the norm calculator and an output of the R row calculator, and outputting a norm update matrix value.

摘要翻译： 提供了一种用于MIMO系统的QR分解装置和方法。 QR分解装置包括：用于计算信道输入的矢量大小范数的范数计算器; Q列计算器，用于通过将延迟的信道输入与{平方根超过（norm）}相乘来计算酉矩阵Q的列值; 用于接收延迟信道输入的R行计算器，Q列计算器的输出和1 /√{平方根超过（norm）}，并计算上三角矩阵R的行值; 用于接收延迟信道输入，R行计算器的输出和Q列计算器的延迟输出的Q更新计算器，并计算Q更新矩阵值; 以及范数更新计算器，用于接收范数计算器的延迟输出和R行计算器的输出，并输出范数更新矩阵值。

公开(公告)号：US20080271986A1

公开(公告)日：2008-11-06

申请号：US12066026

申请日：2006-08-22

申请人： Do-Young Jeong ,  Hyun-Min Park ,  Jae-Min Han ,  Cheol-Jung Kim

发明人： Do-Young Jeong ,  Hyun-Min Park ,  Jae-Min Han ,  Cheol-Jung Kim

IPC分类号： B01D59/34

CPC分类号： B01D59/34

摘要： A method for isotope separation of ytterbium comprises isotope-selective photoionizing of a target isotope by use of a laser, and photoionizing of the target isotope from a metastable state to a continuum state or an auto-ionization state through excited states. The photoionized isotope ions of ytterbium can be separated within an electric field. With the method, it is possible to separate a great amount of ytterbium isotope by use of a simple apparatus while ensuring a highly economic efficiency in comparison with a conventional EM method.

摘要翻译： 镱的同位素分离方法包括通过使用激光对目标同位素进行同位素选择性光电离，并且通过激发态将目标同位素从亚稳状态光离子化成连续状态或自动电离状态。 镱的光电离同位素离子可以在电场内分离。 通过该方法，与传统的EM方法相比，可以通过使用简单的装置分离大量的镱同位素，同时确保高度经济的效率。