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    • 77. 发明申请
    • TRACKING-TYPE LASER INTERFEROMETER
    • 跟踪型激光干涉仪
    • US20100208232A1
    • 2010-08-19
    • US12707255
    • 2010-02-17
    • Shinichi Hara
    • Shinichi Hara
    • G01B11/02
    • G01S7/4811G01B11/002G01S17/66
    • A tracking-type laser interferometer in which a pattern emission control unit controls a changing mechanism such that light is emitted along a predetermined pattern when judged by a first judgment unit that at least one of received-light amounts at first and second light reception units is not greater than a first threshold value. A tracking control unit causes the changing mechanism to keep track of a retro reflector when judged by a second judgment unit that both of the received-light amounts at the first and second light reception units are greater than second threshold values during a time period in which the pattern emission control unit controls the changing mechanism for the emission of light along the pattern. The interferometer emits light along the pattern to search for the retro reflector upon losing sight thereof. Upon detection, the interferometer can keep track of the reflector again and resume measurement.
    • 一种跟踪型激光干涉仪,其中图案发射控制单元控制改变机构,使得当由第一判断单元判断时沿着预定图案发射光,第一和第二光接收单元的接收光量中的至少一个为 不大于第一阈值。 跟踪控制单元使第一和第二光接收单元的接收光量在第二判断单元判断时,跟踪控制单元跟踪回光反射器,在第一和第二光接收单元处的接收光量都大于第二阈值, 图案发射控制单元控制沿着图案发光的改变机构。 干涉仪沿着图案发光,以便在看不见时搜索复古反射器。 检测后,干涉仪可以重新跟踪反射镜并恢复测量。
    • 79. 发明申请
    • METHOD FOR ESTIMATING ABSOLUTE DISTANCE OF TRACKING LASER INTERFEROMETER AND TRACKING LASER INTERFEROMETER
    • 跟踪激光干涉仪和跟踪激光干涉仪的绝对距离估计方法
    • US20070268494A1
    • 2007-11-22
    • US11745749
    • 2007-05-08
    • Shinichi HaraNaoyuki TaketomiMakoto Abbe
    • Shinichi HaraNaoyuki TaketomiMakoto Abbe
    • G01B11/02
    • G01S17/74G01S17/42G01S17/66
    • To provide a method for estimating an absolute distance L between a tracking laser interferometer and a retroreflector 70, the tracking laser interferometer including; the retroreflector 70 for reflecting and returning incident measurement light A in an incident direction; and a two-axis rotating mechanism 40 for rotationally moving in an exit direction of the measurement light A so that optical axes of the measurement light A and return light B are collimated, which outputs a measurement value according to an increase or decrease in the distance between the interferometer and the retroreflector 70, wherein the absolute distance L between the interferometer and the retroreflector 70 is estimated by performing arithmetic operation based on an angular position variation θ2 of the two-axis rotating mechanism 40 when a deviation amount d of the return light B from the retroreflector 70 relative to a predetermined position is given as a predetermined value d2. This enables an appropriate increase or decrease of the control amount of a tracking control according to a distance between the interferometer and the retroreflector without forcing an operator to perform a troublesome origin return operation and adding an expensive absolute distance sensor.
    • 为了提供一种用于估计跟踪激光干涉仪和后向反射器70之间的绝对距离L的方法,所述跟踪激光干涉仪包括: 用于在入射方向上反射和返回入射测量光A的后向反射器70; 以及用于沿测量光A的出射方向旋转移动的双轴旋转机构40,使得测量光A和返回光B的光轴被准直,其根据距离的增减来输出测量值 在干涉仪和后向反射器70之间,其中通过基于两轴旋转机构40的角度位置变化θ2进行算术运算来估计干涉仪和后向反射器70之间的绝对距离L. 来自后向反射器70的返回光B相对于预定位置的偏差量d被给定为预定值d 2。 这使得能够根据干涉仪和后向反射器之间的距离适当地增加或减少跟踪控制的控制量,而不会强迫操作者执行麻烦的原点返回操作并添加昂贵的绝对距离传感器。
    • 80. 发明申请
    • Immersion exposure apparatus
    • 浸渍曝光装置
    • US20060285093A1
    • 2006-12-21
    • US11451303
    • 2006-06-13
    • Shinichi HaraNoriyasu Hasegawa
    • Shinichi HaraNoriyasu Hasegawa
    • G03B27/52
    • G03F7/70341G03F7/707G03F7/7095
    • An exposure apparatus includes a projection optical system configured to project an image of a pattern of a reticle onto a substrate. The exposure apparatus exposes the substrate via the projection optical system and a liquid that is disposed between the projection optical system and the substrate. The exposure apparatus includes a top plate configured to hold the substrate, an auxiliary plate disposed around the substrate on the top plate and having a surface that is substantially flush with a surface of the substrate, and a mirror disposed on the top plate for use in measuring at least one of a position of the top plate and an orientation of the top plate. The auxiliary plate preferably is formed of a low-thermal-expansion material having a coefficient of linear expansion of no greater than 100 ppb.
    • 曝光装置包括:投影光学系统,被配置为将掩模版图案的图像投影到基板上。 曝光装置经由投影光学系统和设置在投影光学系统和基板之间的液体露出基板。 曝光装置包括:被配置为保持基板的顶板,设置在顶板上的基板周围的辅助板,其具有与基板的表面基本齐平的表面;以及设置在顶板上的反射镜,用于 测量顶板的位置和顶板的取向中的至少一个。 辅助板优选由线膨胀系数不大于100ppb的低热膨胀材料形成。