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    • 7. 发明申请
    • Device and method for wavefront measurement of an optical imaging system by means of phase-shifting interferometry
    • 通过相移干涉法对光学成像系统进行波前测量的装置和方法
    • US20050007602A1
    • 2005-01-13
    • US10816896
    • 2004-04-05
    • Helmut HaidnerWolfgang EmerRainer HochUlrich WegmannMartin SchrieverMarkus Goeppert
    • Helmut HaidnerWolfgang EmerRainer HochUlrich WegmannMartin SchrieverMarkus Goeppert
    • G01B9/02G01J9/04
    • G03F7/706G01J9/04G01M11/0264G01M11/0271
    • Device and method for wavefront measurement of an optical imaging system by means of phase-shifting interferometry, having a mask structure (6a) to be arranged on the object side, and/or a grating structure (7a) to be arranged on the image side. The object-side mask structure includes one or more one-dimensional mask structure patterns, and the image-side grating structure includes one or more two-dimensional grating structure patterns. Alternatively, conversely, the mask structure includes one or more two-dimensional patterns, and the grating structure includes one or more one-dimensional patterns. Additionally or alternatively, a pupil position offset caused by a lateral relative movement of the mask structure and detector element can be taken into account by back calculating the interferogram, respectively recorded by the detector element, using an associated phase-shift characteristic, or by a computational correction of wavefront derivatives, obtained from the recorded interferograms, in the direction of lateral movement. The method and/or the device can by used, for example, for determining aberration in the case of high-resolution projection objectives of microlithography exposure machines using shearing or point interferometry.
    • 用于通过相移干涉测量法对光学成像系统进行波前测量的装置和方法,具有要布置在物体侧的掩模结构(6a)和/或要布置在像侧的光栅结构(7a) 。 物体侧掩模结构包括一个或多个一维掩模结构图案,并且图像侧光栅结构包括一个或多个二维光栅结构图案。 或者,相反地,掩模结构包括一个或多个二维图案,并且光栅结构包括一个或多个一维图案。 附加地或替代地,由掩模结构和检测器元件的横向相对移动引起的瞳孔位置偏移可以通过使用相关联的相移特性反向计算分别由检测器元件记录的干涉图来考虑, 从记录的干涉图中获得的横向运动方向的波前衍生的计算校正。 该方法和/或装置可以通过例如用于在使用剪切或点干涉测量的微光刻曝光机的高分辨率投影物镜的情况下确定像差。
    • 8. 发明授权
    • Apparatus and method for measuring the wavefront of an optical system
    • 用于测量光学系统的波前的装置和方法
    • US07336371B1
    • 2008-02-26
    • US10766014
    • 2004-01-29
    • Helmut HaidnerMarkus GoeppertMartin SchrieverUlrich Wegmann
    • Helmut HaidnerMarkus GoeppertMartin SchrieverUlrich Wegmann
    • G01B9/02
    • G01M11/0271G03F7/706
    • A device and a method for wavefront measurement of an optical system (7), in particular by an interferometric measurement technique. A dynamic range correction element (12, 12a) is arranged in the beam path upstream of the detector arrangement (11) and is designed such that the variation in the spatially dependent characteristic of a phase of the wavefront forming the interference pattern is kept below a prescribed limit value throughout a detection area. In addition or as an alternative, a set of several diffraction structures of different period length can be used with a shearing interferometry technique and/or a set of several pairs of a reference pinhole and a signal passage opening with different hole spacings can be used with a point diffraction interferometry technique for different sub-areas of the detection area. A remaining distortion error can be taken into account by determining a corresponding distortion transformation and applying the inverse distortion transformation.
    • 一种用于光学系统(7)的波前测量的装置和方法,特别是通过干涉测量技术。 动态范围校正元件(12,12a)被布置在检测器装置(11)的上游的光束路径中,并且被设计成使得形成干涉图案的波阵面的相位的空间相关特性的变化保持在 在整个检测区域的规定的极限值。 另外或作为替代,可以使用剪切干涉测量技术的一组不同周期长度的几种衍射结构,和/或一组几对参考针孔和具有不同孔间距的信号通道开口可以与 用于检测区域的不同子区域的点衍射干涉测量技术。 可以通过确定相应的失真变换并应用逆失真变换来考虑剩余的失真误差。
    • 9. 发明授权
    • Device and method for wavefront measurement of an optical imaging system by means of phase-shifting interferometry
    • 通过相移干涉法对光学成像系统进行波前测量的装置和方法
    • US07417745B2
    • 2008-08-26
    • US10816896
    • 2004-04-05
    • Helmut HaidnerWolfgang EmerRainer HochUlrich WegmannMartin SchrieverMarkus Goeppert
    • Helmut HaidnerWolfgang EmerRainer HochUlrich WegmannMartin SchrieverMarkus Goeppert
    • G01B9/02
    • G03F7/706G01J9/04G01M11/0264G01M11/0271
    • Device and method for wavefront measurement of an optical imaging system by means of phase-shifting interferometry, having a mask structure (6a) to be arranged on the object side, and/or a grating structure (7a) to be arranged on the image side. The object-side mask structure includes one or more one-dimensional mask structure patterns, and the image-side grating structure includes one or more two-dimensional grating structure patterns. Alternatively, conversely, the mask structure includes one or more two-dimensional patterns, and the grating structure includes one or more one-dimensional patterns. Additionally or alternatively, a pupil position offset caused by a lateral relative movement of the mask structure and detector element can be taken into account by back calculating the interferogram, respectively recorded by the detector element, using an associated phase-shift characteristic, or by a computational correction of wavefront derivatives, obtained from the recorded interferograms, in the direction of lateral movement. The method and/or the device can by used, for example, for determining aberration in the case of high-resolution projection objectives of microlithography exposure machines using shearing or point interferometry.
    • 用于通过相移干涉测量法对具有要布置在物体侧的掩模结构(6a)的光学成像系统的波前测量的装置和方法和/或布置在物体侧上的光栅结构(7a) 形象一面 物体侧掩模结构包括一个或多个一维掩模结构图案,并且图像侧光栅结构包括一个或多个二维光栅结构图案。 或者,相反地,掩模结构包括一个或多个二维图案,并且光栅结构包括一个或多个一维图案。 附加地或替代地,由掩模结构和检测器元件的横向相对移动引起的瞳孔位置偏移可以通过使用相关联的相移特性反向计算分别由检测器元件记录的干涉图来考虑, 从记录的干涉图中获得的横向运动方向的波前衍生的计算校正。 该方法和/或装置可以通过例如用于在使用剪切或点干涉测量的微光刻曝光机的高分辨率投影物镜的情况下确定像差。