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    • 6. 发明申请
    • Method for the interferometric measurement of non-rotationally symmetric wavefront errors
    • 用于干涉测量非旋转对称波前误差的方法
    • US20050046867A1
    • 2005-03-03
    • US10931703
    • 2004-09-01
    • Guenther SeitzWolfgang Otto
    • Guenther SeitzWolfgang Otto
    • G01J9/02G01B9/02
    • G01J9/02
    • The method serves for the interferometric measurement of non-rotationally symmetric wavefront errors on a specimen (1). The specimen (1) is brought in this case into a number of rotational positions, at least one measurement result being determined in each of the rotational positions. In conclusion, a mathematical evaluation of all measurement results is performed. The measurement is carried out in at least two measurement series (M, N). The measurement results (M1 . . . Mm; N1 . . . Nn) of each of the measurement series (M, N) are determined respectively in mutually equidistant rotational positions of the specimen (1). Each of the measurement series (M, N) comprises a specific number (m, n) of measurements. The individual numbers (m, n) are natural and mutually coprime numbers. The measurement results (M1 . . . Mm, N1 . . . Nn) of each of the at least two measurement series (M, N) are evaluated independently of one another for non-rotationally symmetric wavefront errors ( m, n) on the specimen, a difference of the at least two non-rotationally symmetric wavefront errors ( m, n) being formed. The difference ( m− n) that is formed is computationally rotated m or n times and the results are averaged out. At least one of the wavefront errors ( m, n) is corrected with the result ( m− n>m or m− n>n) averaged in this way.
    • 该方法用于对样品(1)上的非旋转对称波前误差进行干涉测量。 在这种情况下,将样本(1)带入多个旋转位置,在每个旋转位置中确定至少一个测量结果。 总之,对所有测量结果进行数学评估。 测量在至少两个测量系列(M,N)中进行。 测量系列(M,N)的测量结果(M1 ... Mm; N1 ... Nn)分别在样本(1)的相互等距的旋转位置中确定。 每个测量系列(M,N)包括特定数量(m,n)的测量值。 个别数字(m,n)是自然而且相互互相对称的数字。 对于非旋转对称的波前误差(M,N,N)分别评估至少两个测量序列(M,N)中的每一个的测量结果(M1 ... Mm,N1 ... Nn) W> n),形成至少两个非旋转对称波阵面误差(W m,W n)的差。 形成的差异( m- n)计算旋转m或n次,结果被平均化。 使用结果(“W”m -W> n> m或“W”m -n> n)校正波前差错( m,W> n)中的至少一个, 以这种方式平均。
    • 8. 发明授权
    • Method for the interferometric measurement of non-rotationally symmetric wavefront errors
    • 用于干涉测量非旋转对称波前误差的方法
    • US07277186B2
    • 2007-10-02
    • US10931703
    • 2004-09-01
    • Guenther SeitzWolfgang Otto
    • Guenther SeitzWolfgang Otto
    • G01B9/02
    • G01J9/02
    • The method serves for the interferometric measurement of non-rotationally symmetric wavefront errors on a specimen . The specimen is brought into a number of rotational positions, at least one measurement result being determined in each of the rotational positions and a mathematical evaluation of all measurement results is performed. The measurement results (M1 . . . Mm; N1 . . . Nn) of each of the measurement series (M, N) are determined respectively in mutually equidistant rotational positions of the specimen . The measurement results (M1 . . . Mm, N1 . . . Nn) of each of the at least two measurement series (M, N) are evaluated independently of one another for non-rotationally symmetric wavefront errors ( m, n) on the specimen, and a difference is computationally rotated m or n times and the results averaged out. At least one of the wavefront errors ( m, n) is corrected with the result ( m- n>m or m- n>n) averaged in this way.
    • 该方法用于干涉测量样品上的非旋转对称波前误差。 将样本带入多个旋转位置,在每个旋转位置中确定至少一个测量结果,并且执行所有测量结果的数学评估。 每个的测量结果(M 1 M 1 ... M N N N N 1 N N N N N N) 分别在样本的相互等距的旋转位置确定测量系列(M,N)。 每个的测量结果(M 1 M 1 ... M N N N N 1 N N N N N N N N N 对于非旋转对称的波前误差( N,N> N),彼此独立地评估至少两个测量系列(M,N) 在样本上,差异计算旋转m或n次,结果平均。 波前错误( )中的至少一个用结果(<< W> n 以这种方式平均。