The non fixfrontier Newtonian rings are studied by using matrix optics method and the condition of forming interferencefringe.
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。
2
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.
The fringe processing method based on divided image blocks can retain useful information, remove interference and redundant information, and is of high reliability.