On the basis of structure design of optical system and parameter option of optical components, the visibility of interference fringe with zero background intensity is optimized.
通过对光学干涉系统结构设计和元件参数选择，最大限度地优化了干涉条纹的可见度，并设计出零背景光强标准硅球直径精密测量系统。
With increasing beam separation, the number of interference fringes increases and the fringe separation and visibility decrease.
随着光束间距的增大，干涉条纹间距减小，条纹数目增多，条纹可见度减小；
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