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    • 3. 发明申请
    • ENCODER
    • 编码器
    • US20090267781A1
    • 2009-10-29
    • US12432025
    • 2009-04-29
    • Susumu MAKINOUCHIToru IMAIAkihiro WATANABE
    • Susumu MAKINOUCHIToru IMAIAkihiro WATANABE
    • G08B21/00G01D5/34
    • G01D5/38
    • 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.
    • 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。
    • 6. 发明申请
    • ENCODER
    • 编码器
    • US20080258050A1
    • 2008-10-23
    • US12144936
    • 2008-06-24
    • Susumu MAKINOUCHIToru IMAIAkihiro WATANABE
    • Susumu MAKINOUCHIToru IMAIAkihiro WATANABE
    • G01D5/34
    • G01D5/38G01D5/34784
    • 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.
    • 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。
    • 9. 发明授权
    • Exposure apparatus
    • 曝光装置
    • US5907392A
    • 1999-05-25
    • US682992
    • 1996-07-18
    • Susumu Makinouchi
    • Susumu Makinouchi
    • G03B27/42G03F7/20G01N21/86
    • G03F7/70358G03B27/42G03F7/70725G03F7/70775
    • 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.
    • 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。
    • 10. 发明授权
    • Projection optical apparatus
    • 投影光学仪器
    • US4801977A
    • 1989-01-31
    • US198688
    • 1988-05-24
    • Shoji IshizakaHideo MizutaniSusumu MakinouchiAkikazu Tanimoto
    • Shoji IshizakaHideo MizutaniSusumu MakinouchiAkikazu Tanimoto
    • H01L21/30G03F7/20H01L21/027G03B27/52G03B27/74G03B27/80
    • G03F7/706G03F7/70241G03F7/70858G03F7/70883
    • 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.
    • 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。