Encoder that optically detects positional information of a moving body from different optical paths lengths
    1.
    发明授权
    Encoder that optically detects positional information of a moving body from different optical paths lengths 有权
    从不同的光路长度光学地检测移动体的位置信息的编码器

    公开(公告)号:US08710425B2

    公开(公告)日:2014-04-29

    申请号:US13090659

    申请日:2011-04-20

    IPC分类号: G01D5/34

    CPC分类号: G01D5/38 G01D5/34746

    摘要: An encoder emits modulated light from a light source section and lets a first light and a second light separated from the modulated light interfere with each other in a moving grating. In the encoder, the light emitted from the light source section is electrically modulated, and the first light and the second light have different light path lengths.

    摘要翻译: 编码器发射来自光源部分的调制光,并使得与调制光分离的第一光和第二光在移动光栅中相互干扰。 在编码器中,从光源部发射的光被电调制,第一光和第二光具有不同的光路长度。

    ENCODER
    3.
    发明申请
    ENCODER 审中-公开
    编码器

    公开(公告)号:US20090267781A1

    公开(公告)日:2009-10-29

    申请号:US12432025

    申请日:2009-04-29

    IPC分类号: G08B21/00 G01D5/34

    CPC分类号: G01D5/38

    摘要: The present invention performs calculations on photoelectric conversion signals (Ia, Ib, Ic, Id) supplied from a light receiving device and calculates two signals (IA, IB) as a result. Furthermore, the signal (IAB) is generated based on the signals (IA, IB), and the signal (IAB) is output from the encoder. As shown in equation, the term in the signal (IAB) that depends on the time t is 4d−sin(ωt). Moreover, as shown in equations (5) and (6), the term that depends on the time t in the signals (IA, IB) is 2d−sin(ωt); consequently, the signal (IAB) varies with respect to the signals (IA, IB) on a scale substantially tantamount to doubling the degree of modulation. Accordingly, if the position of the movable scale is detected based on the signal (IAB), then that position can be detected with good accuracy on a scale tantamount to doubling the degree of modulation.

    摘要翻译: 本发明对从光接收装置提供的光电转换信号(Ia,Ib,Ic,Id)进行计算,结果计算出两个信号(IA,IB)。 此外,基于信号(IA,IB)生成信号(IAB),并且从编码器输出信号(IAB)。 如等式所示,取决于时间t的信号(IAB)中的项是4d-sin(ωgat)。 此外,如等式(5)和(6)所示,取决于信号(IA,IB)中的时间t的项是2d-sin(ωgat); 因此,信号(IAB)相对于信号(IA,IB)而变化,基本上等于将调制度加倍。 因此,如果基于信号(IAB)检测到可移动刻度的位置,那么可以以等于调制度加倍的量级的高精度检测该位置。

    Encoder that optically detects positional information of a scale
    4.
    发明授权
    Encoder that optically detects positional information of a scale 失效
    光学地检测刻度尺的位置信息的编码器

    公开(公告)号:US07601947B2

    公开(公告)日:2009-10-13

    申请号:US11798255

    申请日:2007-05-11

    IPC分类号: G01B9/02

    CPC分类号: G01D5/38

    摘要: When an incident light is obliquely incident on an index scale, the optical path length of light A becomes longer than the optical path length of light B and an optical path length difference occurs, which causes a phase difference in both of the diffracted lights incident on a photodetection element. According to the phase difference, intensity of a photoelectric detection signal output from the photodetection element changes. That is, due to a periodic change in the incident angle of the incident light, the phase difference between light A and light B is modulated, and the interference signal becomes greatly modulated.

    摘要翻译: 当入射光倾斜地入射到指数刻度上时,光A的光程长度比光B的光路长度长,并且产生光程长度差,导致两个衍射光入射的相位差 光电检测元件。 根据相位差,从光检测元件输出的光电检测信号的强度变化。 也就是说,由于入射光的入射角度的周期性变化,光A和光B之间的相位差被调制,并且干扰信号变得很大地被调制。

    MOVABLE-BODY APPARATUS, EXPOSURE APPARATUS, EXPOSURE METHOD, AND DEVICE MANUFACTURING METHOD
    5.
    发明申请
    MOVABLE-BODY APPARATUS, EXPOSURE APPARATUS, EXPOSURE METHOD, AND DEVICE MANUFACTURING METHOD 有权
    可动体装置,曝光装置,曝光方法及装置的制造方法

    公开(公告)号:US20090135388A1

    公开(公告)日:2009-05-28

    申请号:US12330119

    申请日:2008-12-08

    IPC分类号: G01B9/02 G03B27/58 G03B27/42

    摘要: A moving grating is arranged on a side of a wafer stage, a light source irradiates a light to the moving grating, diffracted lights generated from the moving grating are interfered by fixed scales and an index scale of which positional relation with the light source is fixed, and a detection instrument detects the interfered light. In this case, since the moving grating is arranged on a side of the wafer stage, upsizing of the entire wafer stage can be suppressed. Further, since interference occurs between a plurality of diffracted lights (e.g., the ±1st-order diffracted light) passing extremely close optical paths, influence caused by a fluctuation of ambient atmosphere becomes less in comparison to conventional interferometers, and thus, a high-precision measurement of positional information of the movable body is possible.

    摘要翻译: 移动光栅布置在晶片台的一侧,光源将光照射到移动光栅,由移动光栅产生的衍射光被固定的刻度干扰,并且与光源的位置关系固定的折射率 并且检测仪器检测被干扰的光。 在这种情况下,由于移动光栅布置在晶片台的一侧,因此可以抑制整个晶片台的大型化。 此外,由于在通过非常接近的光路的多个衍射光(例如±1级衍射光)之间发生干涉,所以与常规干涉仪相比,由环境大气的波动引起的影响变小, 移动体的位置信息的精度测量是可能的。

    ENCODER
    6.
    发明申请
    ENCODER 有权
    编码器

    公开(公告)号:US20080258050A1

    公开(公告)日:2008-10-23

    申请号:US12144936

    申请日:2008-06-24

    IPC分类号: G01D5/34

    CPC分类号: G01D5/38 G01D5/34784

    摘要: A light via first and second index scales is split by a beam splitter, and one of the split lights is received by a first light-receiving element via a movable scale and also the other of the split lights is received by a second light-receiving element via a reference scale, and therefore by computing positional information of the movable scale using an output of the first light-receiving element (a first output) and an output of the second light-receiving element (a second output), movement information of the movable scale can be measured with high precision without being affected by drift of the modulation center (the oscillation center) of the beam.

    摘要翻译: 通过第一和第二索引刻度的光被分束器分开,并且其中一个分光灯通过可移动刻度被第一光接收元件接收,另一个分光灯由第二光接收 并且因此通过使用第一受光元件(第一输出)的输出和第二光接收元件的输出(第二输出)来计算可移动刻度的位置信息,以及 可以高精度地测量可移动刻度,而不受波束的调制中心(振荡中心)的漂移的影响。

    Anti-Gravity Device for Supporting Weight and Reducing Transmissibility
    7.
    发明申请
    Anti-Gravity Device for Supporting Weight and Reducing Transmissibility 审中-公开
    用于支撑重量和降低传播率的重力装置

    公开(公告)号:US20070236854A1

    公开(公告)日:2007-10-11

    申请号:US11279296

    申请日:2006-04-11

    IPC分类号: H01H47/00

    CPC分类号: G03F7/709 G03F7/70716

    摘要: Methods and apparatus for supporting the weight of a first stage of a stage apparatus using magnets are disclosed. According to one aspect of the present invention, and apparatus includes a first structure, a second structure, and an anti-gravity device. The anti-gravity device has a first magnet and a piston arrangement that includes a second magnet. The first magnet is coupled to the first structure, and the piston arrangement is movably interfaced with the second structure through an air bearing. The first magnet and the piston arrangement cooperate to support the first structure over the second structure relative to a vertical axis.

    摘要翻译: 公开了一种用于支撑使用磁体的平台装置的第一级的重量的方法和装置。 根据本发明的一个方面,并且装置包括第一结构,第二结构和反重力装置。 反重力装置具有包括第二磁体的第一磁体和活塞装置。 第一磁体联接到第一结构,并且活塞装置通过空气轴承与第二结构可移动地接合。 第一磁体和活塞装置配合以相对于垂直轴线支撑第二结构的第一结构。

    Feedforward control with reduced learning time for lithographic system to improve throughput and accuracy
    8.
    发明申请
    Feedforward control with reduced learning time for lithographic system to improve throughput and accuracy 审中-公开
    前馈控制,减少光刻系统的学习时间,提高产量和精度

    公开(公告)号:US20050231706A1

    公开(公告)日:2005-10-20

    申请号:US10825022

    申请日:2004-04-14

    IPC分类号: G03B27/58 G03F7/20

    CPC分类号: G03F7/70725

    摘要: Embodiments of the present invention are directed to a control system and method for controlling the trajectory and alignment of one or more stages by incorporating a grouping method in the control methodology. In one embodiment, a method of controlling movement of one or more stages of a precision assembly to process a substrate having a plurality of process regions comprises dividing the substrate into blocks according to one or more preset criteria, each block of the substrate including one or more process regions; generating learning data for one or more representative process regions for each block of the substrate; and using the generated learning data of the one or more representative process regions of each block to control movement of the one or more stages to process the block of one or more process regions of the substrate.

    摘要翻译: 本发明的实施例涉及一种用于通过在控制方法中并入分组方法来控制一个或多个阶段的轨迹和对准的控制系统和方法。 在一个实施例中,一种控制精密组件的一个或多个阶段的运动以处理具有多个工艺区域的衬底的方法包括根据一个或多个预设标准将衬底划分成块,衬底的每个块包括一个或多个 更多的工艺区域; 为所述基板的每个块生成用于一个或多个代表性处理区域的学习数据; 以及使用所生成的每个块的一个或多个代表性处理区域的学习数据来控制所述一个或多个阶段的移动以处理所述衬底的一个或多个处理区域的块。

    Exposure apparatus
    9.
    发明授权
    Exposure apparatus 失效
    曝光装置

    公开(公告)号:US5907392A

    公开(公告)日:1999-05-25

    申请号:US682992

    申请日:1996-07-18

    申请人: Susumu Makinouchi

    发明人: Susumu Makinouchi

    IPC分类号: G03B27/42 G03F7/20 G01N21/86

    摘要: A scanning type exposure apparatus includes a mask stage position-measuring unite a substrate stage position-measuring unit, an arithmetic processing unit, and a control unit. The arithmetic processing unit multiplies results of measurement (WX, WY, W.theta.) by the substrate position-measuring unit by a conversion vector including components containing a magnification of a projection optical system and an angle of rotation between a mask and a substrate to determine a target vector quantity (RX*, RY*, R.theta.*) of a mask stage. An error vector is determined by subtracting, from the target vector quantity, results of measurement (RX, RY, R.theta.) by the mask stage position-measuring unit. The controller controls the mask stage so that the error vector becomes zero. The exposure apparatus includes correcting sections for correcting time lags in measurement by the respective position-measuring units. The arithmetic processing unit uses corrected positional information. The mask stage can accurately follow a substrate stage.

    摘要翻译: 扫描型曝光装置包括掩模台位置测量,联合基板台位置测量单元,运算处理单元和控制单元。 算术处理单元通过包括投影光学系统的放大率和掩模与基板之间的旋转角度的分量的转换矢量将测量结果(WX,WY,Wθ)相乘,以确定 掩模台的目标矢量(RX *,RY *,Rθ*)。 通过从掩模台位置测量单元从目标矢量量中减去测量结果(RX,RY,Rθ)来确定误差向量。 控制器控制掩模级,使得误差向量变为零。 曝光装置包括用于通过各个位置测量单元来校正测量中的时间滞后的校正部分。 算术处理单元使用校正的位置信息。 掩模阶段可以准确地跟随衬底阶段。

    Projection optical apparatus
    10.
    发明授权
    Projection optical apparatus 失效
    投影光学仪器

    公开(公告)号:US4801977A

    公开(公告)日:1989-01-31

    申请号:US198688

    申请日:1988-05-24

    摘要: A projection optical apparatus comprises a projection optical system for projecting the image of an object onto a substrate, data collecting means for obtaining data regarding a factor which causes a variation in the optical characteristic of the projection optical system, adjusting means for adjusting the relation between the substrate and the image of the object relative to the variation in the optical characteristic of the projection optical system, means for determining the amount of adjustment by the adjusting means in accordance with a model formula using a predetermined parameter on the basis of the data obtained by the data collecting means, means for independently measuring the variation in the optical characteristic of the projection optical system, and means for correcting the parameter of the model formula on the basis of the result measured by the measuring means.

    摘要翻译: 投影光学装置包括用于将物体的图像投影到基板上的投影光学系统,用于获得关于引起投影光学系统的光学特性变化的因素的数据的数据收集装置,用于调整投影光学系统的光学特性之间的关系的调整装置 基板和物体相对于投影光学系统的光学特性的变化的图像,用于根据获得的数据使用预定参数根据模型公式确定调节装置的调整量的装置 通过数据采集装置,用于独立地测量投影光学系统的光学特性的变化的装置,以及用于基于由测量装置测量的结果来校正模型公式的参数的装置。