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    • 3. 发明申请
    • MEASURING METHOD AND MEASURING APPARATUS OF PUPIL TRANSMITTANCE DISTRIBUTION, EXPOSURE METHOD AND EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD
    • 测量方法和测量装置的发射分布,曝光方法和曝光装置,以及装置制造方法
    • US20110205514A1
    • 2011-08-25
    • US13011320
    • 2011-01-21
    • Naonori KITA
    • Naonori KITA
    • G03B27/54G01M11/00
    • G03F7/70941G01M11/02G03F7/70133G03F7/70591G03F7/706
    • A measuring apparatus for measuring a pupil transmittance distribution of an optical system to be examined has a diffraction grating mounted on a first surface in an optical Fourier transform relation with a pupil of the optical system, an illumination optical system which makes a beam inclined relative to the optical axis, incident to a predetermined position on the first surface so that a +first-order diffracted beam, generated through the diffraction grating, passes through a first pupil partial region in an effective region of the pupil and so that a −first-order diffracted beam, generated through the diffraction grating, passes through a second pupil partial region, and a measuring unit which measures an intensity of the +first-order diffracted beam, and an intensity of the −first-order diffracted beam, and the measuring apparatus determines a ratio of a pupil transmittance in the first and second pupil partial regions.
    • 用于测量待检光学系统的光瞳透射率分布的测量装置具有安装在与光学系统的光瞳的光学傅立叶变换关系的第一表面上的衍射光栅,照明光学系统,其使光束相对于 光轴入射到第一表面上的预定位置,使得通过衍射光栅产生的+一级衍射光束通过瞳孔的有效区域中的第一光瞳部分区域,并且使得第一 - 通过衍射光栅产生的三阶衍射光束通过第二光瞳部分区域,测量单位测量+一级衍射光束的强度和一级衍射光束的强度,以及测量 设备确定第一和第二光瞳部分区域中的光瞳透射率的比率。