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    • 7. 发明授权
    • Moire method and measuring system for measuring the distortion of an optical imaging system
    • 用于测量光学成像系统失真的莫尔法和测量系统
    • US07019824B2
    • 2006-03-28
    • US10935320
    • 2004-09-08
    • Ulrich WegmannUwe SchellhornRalph KlaesgesJoachim Stuehler
    • Ulrich WegmannUwe SchellhornRalph KlaesgesJoachim Stuehler
    • G01B9/00
    • G03F7/706
    • In the case of a method and a measuring system for measuring the distortion of an optical imaging system with the aid of moiré patterns, an object grating with an object pattern is arranged in the object plane of the imaging system, and an image grating with an image pattern is arranged in the image plane of the imaging system. Both the object pattern and the image pattern in each case have a multiplicity of cells with sub-gratings of different grating properties, it being possible, in particular, for the sub-gratings to have different directions of periodicity and different phase angles. The object pattern and the image pattern are coordinated with one another in such a way that, when the object pattern is projected onto the image pattern with the aid of the imaging system, images of the sub-gratings of the object pattern superimpose in each case with assigned sub-gratings of the image pattern, accompanied by the generation of moiré sub-patterns, which are likewise present in the form of cells situated next to one another. As a result, it is possible simultaneously to determine distortion components for a plurality of image directions aligned transverse to one another. It is preferred to use phase-shift methods in order to evaluate the moiré sub-pattern.
    • 在用于通过莫尔图案测量光学成像系统的失真的方法和测量系统的情况下,具有对象图案的物体光栅被布置在成像系统的物平面中,并且具有 图像图案被布置在成像系统的图像平面中。 在每种情况下,对象图案和图像图案都具有具有不同光栅特性的子光栅的多个单元格,特别是对于子光栅具有不同的周期性方向和不同的相位角度是可能的。 对象图案和图像图案彼此协调,使得当借助于成像系统将对象图案投影到图像图案上时,对象图案的子光栅的图像在每种情况下叠加 具有分配的图像图案的子光栅,伴随着产生莫尔子图案,其同样以彼此相邻的单元格的形式存在。 结果,可以同时确定用于彼此横向排列的多个图像方向的失真分量。 优选使用相移方法来评估莫尔子图案。
    • 8. 发明申请
    • Moire method and measuring system for measuring the distortion of an optical imaging system
    • 用于测量光学成像系统失真的莫尔法和测量系统
    • US20050122506A1
    • 2005-06-09
    • US10935320
    • 2004-09-08
    • Ulrich WegmannUwe SchellhornRalph KlaesgesJoachim Stuehler
    • Ulrich WegmannUwe SchellhornRalph KlaesgesJoachim Stuehler
    • G01M11/02G01B11/14G01M11/00G03F7/20H01L21/027
    • G03F7/706
    • In the case of a method and a measuring system for measuring the distortion of an optical imaging system with the aid of moiré patterns, an object grating with an object pattern is arranged in the object plane of the imaging system, and an image grating with an image pattern is arranged in the image plane of the imaging system. Both the object pattern and the image pattern in each case have a multiplicity of cells with sub-gratings of different grating properties, it being possible, in particular, for the sub-gratings to have different directions of periodicity and different phase angles. The object pattern and the image pattern are coordinated with one another in such a way that, when the object pattern is projected onto the image pattern with the aid of the imaging system, images of the sub-gratings of the object pattern superimpose in each case with assigned sub-gratings of the image pattern, accompanied by the generation of moiré sub-patterns, which are likewise present in the form of cells situated next to one another. As a result, it is possible simultaneously to determine distortion components for a plurality of image directions aligned transverse to one another. It is preferred to use phase-shift methods in order to evaluate the moiré sub-pattern.
    • 在用于通过莫尔图案测量光学成像系统的失真的方法和测量系统的情况下,具有对象图案的物体光栅被布置在成像系统的物平面中,并且具有 图像图案被布置在成像系统的图像平面中。 在每种情况下,对象图案和图像图案都具有具有不同光栅特性的子光栅的多个单元格,特别是对于子光栅具有不同的周期性方向和不同的相位角度是可能的。 对象图案和图像图案彼此协调,使得当借助于成像系统将对象图案投影到图像图案上时,对象图案的子光栅的图像在每种情况下叠加 具有分配的图像图案的子光栅,伴随着产生莫尔子图案,其同样以彼此相邻的单元格的形式存在。 结果,可以同时确定用于彼此横向排列的多个图像方向的失真分量。 优选使用相移方法来评估莫尔子图案。