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    • 4. 发明申请
    • METHOD FOR IMAGE RANGE EXTENSION IN OPTICAL COHERENCE TOMOGRAPHY
    • 光学相干图像中图像范围扩展的方法
    • WO2010007025A1
    • 2010-01-21
    • PCT/EP2009/058928
    • 2009-07-13
    • UNIVERSITY COLLEGE CARDIFF CONSULTANTS LTDDREXLER, WolfgangHOFER, BerndPOVAŽAY, BorisMATZ, Gerald
    • DREXLER, WolfgangHOFER, BerndPOVAŽAY, BorisMATZ, Gerald
    • G01N21/47A61B5/00
    • G01N21/4795G01B9/02044G01B9/02078G01B9/02084G01B9/02091
    • A method of generating a tomogram of a sample (18) wherein an analysis beam (E d ) is subject to dispersion distortion, the method comprising: a) detecting the analysis beam (E d ) b) generating a signal (s) representative of the intensity of wavelengths in the analysis beam (E d ); c) generating (46, 48) a first spatial domain signal (S) representative of the signal (s) so generated; d) detecting (50) a desired signal component of the first spatial domain signal (S) and outputting (70) the desired signal component for use in generating a depth scan which can be used to create a line of the tomogram; e) subtracting (52) the desired signal component from the first spatial domain signal (S) to generate a second spatial domain signal (S -); f) generating (54, 56, 58, 60) an intermediate signal (S + ) which does not include the desired signal component, and g) calculating (62) the complex conjugate of the desired signal component in the first spatial domain signal (S), subtracting (64) it from the intermediate signal (S + ) and creating (66, 68) a signal (s') from which a new first spatial domain signal (S) can be generated for use in steps c) to g).
    • 一种产生样品(18)的断层图像的方法,其中分析光束(Ed)经受色散失真,所述方法包括:a)检测分析光束(Ed)b)产生代表强度的信号 的分析光束(Ed)中的波长; c)产生(46,48)表示如此生成的信号的第一空间域信号(S); d)检测(50)第一空间域信号(S)的期望信号分量并输出(70)所需信号分量,用于产生可用于创建断层图像行的深度扫描; e)从第一空间域信号(S)中减去(52)所需信号分量以产生第二空间域信号(S - ); f)产生(54,56,58,60)不包括所需信号分量的中间信号(S +),以及g)计算(62)所述第一空间域信号中的期望信号分量的复共轭 ),从中间信号(S +)中减去(64)并产生(66,68)一个信号(s'),从该信号可以产生新的第一空间域信号(S),用于步骤c)至g) 。
    • 6. 发明申请
    • VIBRATION RESISTANT INTERFEROMETRY
    • 抗振动干涉测量
    • WO2008055060A3
    • 2008-07-10
    • PCT/US2007082646
    • 2007-10-26
    • ZYGO CORPDECK LESLIE L
    • DECK LESLIE L
    • G01B11/02
    • G01B9/02076G01B9/02057G01B9/02083G01B9/02084G01B2290/65G01H1/06G01H1/08
    • In general, in one aspect, the invention features a method including providing scanning intcrferomctry data for a test object using phase shifting intcrfcrometry, the data including intensity values for each of multiple scan positions for different spatial locations of the test object, the intensity values for each spatial location defining an interference signal for the spatial location, the intensity values for a common scan position defining a data set for that scan position. The method also includes temporally transforming at least some of the interference signals into a first frequency domain signal, determining an estimated phase profile of the test object based on the first frequency domain signal, determining phase shifts at multiple scan positions based on the estimated phase profile, and determining a more accurate phase profile of the test object based on the estimated phase profile and the phase shifts.
    • 通常,在一个方面中,本发明的特征在于一种方法,包括:使用相移内部测量法提供扫描测试对象的测试对象的数据,所述数据包括用于测试对象的不同空间位置的多个扫描位置中的每一个的强度值, 每个空间位置定义空间位置的干涉信号,公共扫描位置的强度值定义该扫描位置的数据组。 该方法还包括将至少一些干扰信号临时变换成第一频域信号,基于第一频域信号确定测试对象的估计相位分布,基于估计的相位分布确定多个扫描位置处的相移 以及基于估计的相位分布和相移来确定测试对象的更精确的相位分布。