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公开(公告)号：US11458561B2
公开(公告)日：2022-10-04
申请号：US16344359
申请日：2017-01-12
IPC分类号： B23K15/00 , B33Y10/00 , B33Y30/00 , B33Y50/02 , H01J37/06 , H01J37/141 , H01J37/147 , H01J37/305 , H01J29/56
摘要： To provide a three-dimensional printing device that irradiates approximately the same ranges on the surface of a powder layer simultaneously with a plurality of electron beams having different beam shapes. An electron beam column 200 of the three-dimensional printing device 100 includes a plurality of electron sources 20 including electron sources having anisotropically-shaped beam generating units, and beam shape deforming elements 30 that deform the beam shapes of electron beams output from the electron sources 20 on a surface 63 of a powder layer 62. A deflector 50 included in the electron beam column 200 deflects an electron beam output from each of the plurality of electron sources 20 by a distance larger than the beam space between electron beams before passing through the deflector 50.
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公开(公告)号：US20190272968A1
公开(公告)日：2019-09-05
申请号：US15776143
申请日：2016-12-26
发明人： Moshe EINAT , Yafit ORBACH , Moritz PILOSSOF
摘要： Disclosed are methods and devices suitable for producing an electron beam.
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公开(公告)号：US10319554B2
公开(公告)日：2019-06-11
申请号：US15539384
申请日：2015-12-23
IPC分类号： H01J29/86 , H01L29/06 , H01L29/12 , G01L21/34 , H01J29/48 , H01J29/56 , H01J29/62 , H01J1/304 , H01J3/02
摘要： Example compact modular electron beam units are provided that can be used to generate electron beams using field emitter elements. A modular electron beam unit may comprise an electron beam source including a base portion, at least one field emitter element coupled to the base portion, the field emitter element including a field emitter tip, at least one gate electrode and a membrane window disposed over the at least one gate electrode.
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公开(公告)号：US20170365438A1
公开(公告)日：2017-12-21
申请号：US15539384
申请日：2015-12-23
CPC分类号： H01J29/86 , G01L21/34 , H01J1/3042 , H01J3/022 , H01J29/481 , H01J29/566 , H01J29/62 , H01J2229/4817 , H01J2229/5635
摘要： Example compact modular electron beam units are provided that can be used to generate electron beams using field emitter elements. A modular electron beam unit may comprise an electron beam source including a base portion, at least one field emitter element coupled to the base portion, the field emitter element including a field emitter tip, at least one gate electrode and a membrane window disposed over the at least one gate electrode.
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5.发明授权Method for performing focusing in a particle-optical device with the aid of astigmatism in the particle beam 有权借助于散射光束中的散光在粒子光学器件中进行聚焦的方法公开(公告)号：US06992289B2
公开(公告)日：2006-01-31
申请号：US10928573
申请日：2004-08-27
CPC分类号： H01J37/21 , H01J2237/216
摘要： Method for performing focusing in a particle-optical device with the aid of astigmatism in the particle beam.In a particle-optical device such as an electron microscope it is advantageous to perform the process of focusing automatically. In accordance with the invention, the electron beam which is to be focused is deliberately made astigmatic to a certain degree. With this astigmatic beam, two images of a specimen are made at two different settings of the objective, after which in each of the images the direction of the astigmatic smearing is determined—for example, with the aid of a two-dimensional Fourier transform (FFT). The directions of the astigmatic smearing are perpendicular to each other if, in the transition from a first setting of the objective to a second one, the point of optimum focus is passed. Through a process of interpolation (which process may be iterative) between these two settings, the point of optimum focus can now be determined. Possible anisotropy in the specimen itself can be eliminated by making two images at both of the settings of the objective and by subtracting the FFTs thereof from each other.
摘要翻译： 借助于散射光束中的散光在粒子光学器件中进行聚焦的方法。 在诸如电子显微镜的粒子光学器件中，有利的是自动执行聚焦过程。 根据本发明，要聚焦的电子束在一定程度上刻意散焦。 利用该散光束，在目标的两个不同设置处制作样本的两个图像，之后在每个图像中确定散光涂片的方向 - 例如，借助于二维傅立叶变换（ FFT）。 如果在从目标的第一设置到第二设置的过渡中，通过最佳焦点的点，则散光涂抹的方向彼此垂直。 通过这两个设置之间的内插过程（该过程可能是迭代的），现在可以确定最佳焦点。 可以通过在物镜的两个设置中通过在彼此中减去FFT来实现两个图像来消除样本本身中可能的各向异性。
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公开(公告)号：US20050174035A1
公开(公告)日：2005-08-11
申请号：US10849655
申请日：2004-05-20
申请人： Seok-Hwan Hwang , Sang-Ho Shin , Sung-Woo Kim
发明人： Seok-Hwan Hwang , Sang-Ho Shin , Sung-Woo Kim
CPC分类号： H01J29/705 , H01J29/566 , H01J2229/5637 , H01J2229/5687
摘要： A deflection yoke includes a vertical deflection coil part and first and second pairs of coils that are symmetrically disposed around a portion of the vertical deflection coil part. Winding directions of the first pair of coils are opposite to those of the second pair of coils, thereby compensating for the misconvergence incurred when light spot is vertically displaced.
摘要翻译： 偏转线圈包括垂直偏转线圈部分和围绕垂直偏转线圈部分的一部分对称设置的第一和第二对线圈。 第一对线圈的绕线方向与第二对线圈的绕线方向相反，从而补偿当光点垂直移位时产生的失会聚。
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7.发明授权Method for correcting distortion of image displayed on display device, distortion detecting unit, distortion correcting unit and display device having such distortion correcting unit 失效用于校正在显示装置上显示的图像的失真的方法，失真检测单元，失真校正单元和具有这种失真校正单元的显示装置
公开(公告)号：US6124685A
公开(公告)日：2000-09-26
申请号：US985083
申请日：1997-12-04
申请人： Takashi Toriu , Satoshi Kouyama
发明人： Takashi Toriu , Satoshi Kouyama
CPC分类号： H04N3/2335
摘要： A method for correcting distortion of an image displayed on a screen of a display device. The method includes steps of taking a picture of a test pattern displayed on the screen of the display device in an adjusting state, extracting distortion information representing distortion of the test pattern from an image obtained from a result of the above step, extracting additional information as a distortion characteristic, the distortion information being approximately represented by a plurality of basic information items which are known and the additional information coupled to the basic information items, storing the additional information in a storage unit, reproducing the distortion information using the additional information stored in the storage unit and the plurality of basic information items when an image is displayed on the screen of the display device, and controlling the display device based on the reproduced distortion information so that the distortion is canceled.
摘要翻译： 一种用于校正显示在显示装置的屏幕上的图像的失真的方法。 该方法包括在调整状态下拍摄显示在显示装置的屏幕上的测试图案的图像的步骤，从根据上述步骤的结果获得的图像提取表示测试图案的失真的失真信息，提取附加信息作为 失真特性，失真信息由已知的多个基本信息项和耦合到基本信息项的附加信息近似表示，将附加信息存储在存储单元中，使用存储在其中的附加信息再现失真信息 存储单元和多个基本信息项目，并且基于再现的失真信息来控制显示设备，从而消除失真。
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公开(公告)号：US06091212A
公开(公告)日：2000-07-18
申请号：US84972
申请日：1998-05-28
申请人： Tae-Gil Park
发明人： Tae-Gil Park
摘要： Disclosed is a circuit for adjusting a horizontal center of a raster displayed on a monitor CRT, which includes a current generating circuit which can control an amount of a direct current flowing through a horizontal deflection yoke of the monitor based on a control voltage, a first voltage, and a second voltage. A control part generates the control voltage in response to a center adjustment signal. A voltage generating circuit generates the first and second voltages, respectively. The first voltage has a higher potential than that of a B.sup.+ voltage which is applied to the horizontal deflection yoke, and the second voltage has a lower potential than that of the B.sup.+ voltage. The current generating circuit either generates a first current flowing into the horizontal deflection yoke to increase the direct current or a second current flowing out therefrom to decrease the direct current, such that the horizontal center of the raster is controlled.
摘要翻译： 公开了一种用于调节显示在监视器CRT上的光栅的水平中心的电路，其包括电流产生电路，该电流产生电路可以基于控制电压控制流过监视器的水平偏转线圈的直流电流量;第一 电压和第二电压。 控制部分响应于中心调节信号产生控制电压。 电压产生电路分别产生第一和第二电压。 第一电压具有比施加到水平偏转线圈的B +电压更高的电位，并且第二电压具有比B +电压低的电位。 电流产生电路或者产生流入水平偏转线圈的第一电流以增加直流电流或从其流出的第二电流以减小直流电流，从而控制光栅的水平中心。
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公开(公告)号：US6013989A
公开(公告)日：2000-01-11
申请号：US40301
申请日：1998-03-18
申请人： Ju-Hyung Lee
发明人： Ju-Hyung Lee
摘要： A wide-band horizontal linearity correction circuit includes: a primary line coil connected between a horizontal deflection yoke and an S-correction capacitor, the primary coil being wound around a first a core having a hysteresis characteristic; a secondary line coil wound around a second core adjacent the first core; a pair of permanent magnets of opposite polarities, disposed on either end of the first core; a microprocessor for supplying an analog linearity correction control signal in response to the variation of the frequency of a horizontal drive pulse signal; and a coil driver for driving the secondary line coil in response to the correction control signal supplied by the microcomputer. Accordingly, horizontal linearity can be corrected over an entire frequency band.
摘要翻译： 宽带水平线性校正电路包括：连接在水平偏转线圈和S校正电容器之间的初级线圈线圈，初级线圈缠绕在具有滞后特性的第一芯片上; 围绕与第一芯相邻的第二芯缠绕的次级线圈; 一对相对极性的永磁体，设置在第一芯的任一端; 微处理器，用于响应于水平驱动脉冲信号的频率的变化而提供模拟线性校正控制信号; 以及用于响应于由微型计算机提供的校正控制信号驱动次级线圈的线圈驱动器。 因此，可以在整个频带上校正水平线性度。
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公开(公告)号：US6005789A
公开(公告)日：1999-12-21
申请号：US120332
申请日：1998-07-22
申请人： Ji-Young Lee
发明人： Ji-Young Lee
CPC分类号： H02M3/33515
摘要： A circuit for inhibiting a transition phenomenon in a power supply unit is disclosed. When the power supply mode is shifted, a transition phenomenon is made not to appear in the operating power supplied to the load. The circuit includes a microcomputer which judges as to the presence or absence of horizontal and vertical synchronizing signals supplied from the computer system so as to vary the power in a stepwise form when shifting the power supply mode. In accordance with control signals of the microcomputer, a feedback level adjusting section reduces the error detected voltage in a stepwise form when the power is fed back from a second rectifying section through an error detecting section to a pulse width modulator (PWM) control section. Therefore, in accordance with the stepwisely decreasing error detected voltage, the pulse width modulator (PWM) control section reduces its output signals in a stepwise form, so that the power supplied to the load can be reduced in a stepwise form.
摘要翻译： 公开了一种用于抑制电源单元中的转换现象的电路。 当电源模式移动时，转换现象不会出现在提供给负载的工作电源中。 该电路包括微型计算机，其判断从计算机系统提供的水平和垂直同步信号的存在或不存在，以便在切换电源模式时以逐步形式改变功率。 根据微型计算机的控制信号，当从第二整流部分通过误差检测部分反馈到脉冲宽度调制器（PWM）控制部分时，反馈电平调整部分以逐步形式减小误差检测电压。 因此，脉冲宽度调制器（PWM）控制部根据逐步降低误差检测电压，逐步减小其输出信号，从而可以逐步地减少提供给负载的功率。
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