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公开(公告)号：US5744780A
公开(公告)日：1998-04-28
申请号：US523321
申请日：1995-09-05
Applicant: Jim J. Chang , Ernest P. Dragon , Bruce E. Warner
Inventor： Jim J. Chang , Ernest P. Dragon , Bruce E. Warner
CPC classification number: B23K26/0626 , B23K26/0057 , B23K26/032 , B23K26/046 , B23K26/0643 , B23K26/0665 , B23K26/082 , B23K26/123 , B23K26/142 , B23K26/16 , B23K26/18 , B23K26/382 , B23K26/384 , B23K26/388 , B23K26/40 , B23K2201/36 , B23K2203/04 , B23K2203/05 , B23K2203/10 , B23K2203/16 , B23K2203/50 , B23K2203/52
Abstract: A new material processing apparatus using a short-pulsed, high-repetition-rate visible laser for precision micromachining utilizes a near diffraction limited laser, a high-speed precision two-axis tilt-mirror for steering the laser beam, an optical system for either focusing or imaging the laser beam on the part, and a part holder that may consist of a cover plate and a back plate. The system is generally useful for precision drilling, cutting, milling and polishing of metals and ceramics, and has broad application in manufacturing precision components. Precision machining has been demonstrated through percussion drilling and trepanning using this system. With a 30 W copper vapor laser running at multi-kHz pulse repetition frequency, straight parallel holes with size varying from 500 microns to less than 25 microns and with aspect ratios up to 1:40 have been consistently drilled with good surface finish on a variety of metals. Micromilling and microdrilling on ceramics using a 250 W copper vapor laser have also been demonstrated with good results. Materialogroaphic sections of machined parts show little (submicron scale) recast layer and heat affected zone.
Abstract translation: 使用短脉冲，高重复率可见激光器进行精密微加工的新材料处理装置利用近衍射限制激光器，用于转向激光束的高速精密双轴倾斜镜，用于两者的光学系统 将激光束聚焦或成像在该部件上，以及可由盖板和背板组成的部件保持器。 该系统通常用于金属和陶瓷的精密钻孔，切割，铣削和抛光，并且在制造精密部件方面具有广泛的应用。 通过使用该系统的冲击钻和切割技术已经证明了精密加工。 使用以多kHz脉冲重复频率运行的30瓦铜蒸气激光器，尺寸变化范围从500微米到小于25微米，纵横比高达1:40的直线平行孔已被持续地钻出，具有良好的表面光洁度 的金属。 使用250瓦铜蒸汽激光器的陶瓷上的微孔和微孔也已经被证明具有良好的结果。 加工零件的材质部分显示出少量（亚微米级）重铸层和热影响区。
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公开(公告)号：US08410396B1
公开(公告)日：2013-04-02
申请号：US11655416
申请日：2007-01-19
Applicant: Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
Inventor： Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
CPC classification number: B23K26/381 , B23K26/0613 , B23K26/3576 , B23K26/382 , B23K26/389 , B23K26/40 , B23K2103/04 , B23K2103/16 , B23K2103/42 , B23K2103/50 , B23K2103/52
Abstract: A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.
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公开(公告)号：US07193175B1
公开(公告)日：2007-03-20
申请号：US11040588
申请日：2005-01-20
Applicant: Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
Inventor： Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
IPC: B23K26/38
CPC classification number: B23K26/381 , B23K26/0613 , B23K26/3576 , B23K26/382 , B23K26/389 , B23K26/40 , B23K2103/04 , B23K2103/16 , B23K2103/42 , B23K2103/50 , B23K2103/52
Abstract: A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.
Abstract translation: 激光系统产生第一激光束，用于快速去除区域中的大部分材料以形成凹陷的孔。 激光系统产生第二激光束，用于精确地清洁凹陷孔，使得最终孔具有高精度的尺寸。
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4.发明授权
公开(公告)号：US5444332A
公开(公告)日：1995-08-22
申请号：US133400
申请日：1993-10-08
Applicant: Jim J. Chang , Terry W. Alger
Inventor： Jim J. Chang , Terry W. Alger
CPC classification number: H01J1/025 , H01S3/0385 , H01S3/0382
Abstract: Several different cold cathode configurations for a gas discharge device each having a plurality of grooves of selected spacing, depth and width to improve the emission of electrons in a gas discharge device. Each of the cold cathode configurations can be machined from a single piece of a selected material. Several of the configurations can be assembled with individual elements which is easily seen from the various figures.
Abstract translation: 用于气体放电装置的几种不同的冷阴极构造，每个具有选定间隔，深度和宽度的多个槽，以改善气体放电装置中的电子的发射。 每个冷阴极构造都可以从单片选定材料加工。 可以使用从各图中容易看出的各个元件来组装几个配置。
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Patent Agency Ranking
公开(公告)号：US20130075373A1
公开(公告)日：2013-03-28
申请号：US11655416
申请日：2007-01-19
Applicant: Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
Inventor： Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
IPC: B23K26/38
CPC classification number: B23K26/381 , B23K26/0613 , B23K26/3576 , B23K26/382 , B23K26/389 , B23K26/40 , B23K2103/04 , B23K2103/16 , B23K2103/42 , B23K2103/50 , B23K2103/52
Abstract: A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.
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公开(公告)号：US06864459B2
公开(公告)日：2005-03-08
申请号：US09781073
申请日：2001-02-08
Applicant: Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
Inventor： Jim J. Chang , Herbert W. Friedman , Brian J. Comaskey
CPC classification number: B23K26/381 , B23K26/0613 , B23K26/3576 , B23K26/382 , B23K26/389 , B23K26/40 , B23K2103/04 , B23K2103/16 , B23K2103/42 , B23K2103/50 , B23K2103/52
Abstract: A laser system produces a first laser beam for rapidly removing the bulk of material in an area to form a ragged hole. The laser system produces a second laser beam for accurately cleaning up the ragged hole so that the final hole has dimensions of high precision.
Abstract translation: 激光系统产生第一激光束，用于快速去除区域中的大部分材料以形成凹陷的孔。 激光系统产生第二激光束，用于精确地清洁凹陷孔，使得最终孔具有高精度的尺寸。
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公开(公告)号：US06704341B1
公开(公告)日：2004-03-09
申请号：US09657394
申请日：2000-09-08
Applicant: Jim J. Chang
Inventor： Jim J. Chang
IPC: H01S3091
CPC classification number: H01S3/0941 , H01S3/061 , H01S3/094057
Abstract: A laser wherein pump radiation from laser diodes is delivered to a pump chamber and into the lasing medium by quasi-three-dimensional compound parabolic concentrator light channels. The light channels have reflective side walls with a curved surface and reflective end walls with a curved surface. A flow tube between the lasing medium and the light channel has a roughened surface.
Abstract translation: 激光器，其中来自激光二极管的泵浦辐射通过准三维复合抛物面聚光器光通道传送到泵室并进入激光介质。 光通道具有具有弯曲表面的反射侧壁和具有弯曲表面的反射端壁。 激光介质和光通道之间的流管具有粗糙表面。
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公开(公告)号：US5978407A
公开(公告)日：1999-11-02
申请号：US825584
申请日：1997-03-31
Applicant: Jim J. Chang , Isaac L. Bass , Luis E. Zapata
Inventor： Jim J. Chang , Isaac L. Bass , Luis E. Zapata
IPC: H01S3/02 , H01S3/0941 , H01S3/091
CPC classification number: H01S3/0941 , H01S3/025 , H01S3/0407 , H01S3/061 , H01S3/094057 , H01S3/094084
Abstract: A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.
Abstract translation: 使用非常规光学器件将激光二极管光注入到激光泵室中的新的紧凑型侧泵激光泵腔设计包括多个细长的光集中通道。 在一个实施例中，光浓度通道是具有非常小的出射孔的复合抛物面聚光器（CPC），使得光不会从泵送室逸出并且将被多余的反射通过激光棒。 这种新设计有效地捕获包围激光棒的泵室内的泵浦辐射。 它能够实现更均匀的激光泵浦和高效的泵浦辐射循环，从而显着提高激光性能。 这种新设计还有效地拓宽了二极管可接受的辐射波长，从而以更低的成本获得了更可靠的激光器性能。
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公开(公告)号：US5434882A
公开(公告)日：1995-07-18
申请号：US226589
申请日：1994-04-12
Applicant: Jim J. Chang
Inventor： Jim J. Chang
CPC classification number: H01S3/10092 , H01S3/08068 , H01S3/08081
Abstract: A new injection-controlled laser resonator incorporates self-filtering and self-imaging characteristics with an efficient injection scheme. A low-divergence laser signal is injected into the resonator, which enables the injection signal to be converted to the desired resonator modes before the main laser pulse starts. This injection technique and resonator design enable the laser cavity to improve the quality of the injection signal through self-filtering before the main laser pulse starts. The self-imaging property of the present resonator reduces the cavity induced diffraction effects and, in turn, improves the laser beam quality.
Abstract translation: 新的注射控制激光谐振器结合了自我滤波和自我成像特性以及高效的注射方案。 将低发散激光信号注入到谐振器中，这使得能够在主激光脉冲启动之前将注入信号转换成期望的谐振器模式。 这种注入技术和谐振器设计使激光腔能够在主激光脉冲启动之前通过自我滤波来提高注入信号的质量。 本谐振器的自成像特性降低了腔诱导的衍射效应，进而提高了激光束的质量。
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