The non fixfrontier Newtonian rings are studied by using matrix optics method and the condition of forming interference fringe.

用矩阵光学的方法和干涉条纹形成的条件研究了非定域牛顿环问题。

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The formula of fringe interval is given and its varying law as well as the method of evaluating the uncertainty of laser length in Michelson interference experiment is discussed.

本文给出了迈克尔逊实验中干涉条纹的间距公式，讨论了干涉条纹间距的变化规律以及激光波长的不确定度评定的方法。

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The fringe processing method based on divided image blocks can retain useful information, remove interference and redundant information, and is of high reliability.

基于分块法的条纹处理技术能够最大限度地保留有用信息，遏制干扰和冗余信息，有很大的可靠性。

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