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    • 2. 发明公开
    • 광위상간섭측정법 및 그 시스템
    • 相移干涉法和系统
    • KR1020080042187A
    • 2008-05-14
    • KR1020087010355
    • 2002-12-04
    • 지고 코포레이션
    • 덱,레스리,엘
    • G01B9/02G01B9/00
    • i) forming an optical interference image by combining different portions of an optical wave front (140) reflected from multiple surfaces (109); ii) recording (170) an interference signal at different locations of the optical interference image in response to varying a property of the optical wave front that causes pairs of the multiple surfaces that have different optical path separations to contribute differently to the interference signal; iii) transforming (180) the interference signal for at least one of the locations to produce a spectrum having a peak at a spectral coordinate corresponding to each pair of the multiple surfaces; and iv) identifying (190) the spectral coordinate of the peak corresponding to a selected pair of the multiple surfaces.
    • i)通过组合从多个表面(109)反射的光波前面(140)的不同部分来形成光学干涉图像; ii)响应于改变具有不同光路分离的多个表面的对的光波前的属性来响应于干涉信号而对光干涉图像的不同位置处的干扰信号进行记录(170); iii)对所述位置中的至少一个对所述干扰信号进行变换(180),以产生在对应于每对所述多个表面的频谱坐标处具有峰值的频谱; 以及iv)识别(190)与所选择的多个表面对对应的峰的谱坐标。