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本文讨论了理想环形莫尔条纹获取的必要条件。推导出了形成环形莫尔条纹的回光栅刻线偏心量的理论计算公式，并提出了一种圆光栅刻划偏心量的快速调试方法。
This paper discusses the necessary conditions for obtaining ideal toroidal moire fringes. A theoretical calculation formula for the eccentricity of the reticle formed by the annular Moiré fringe is deduced. A fast debugging method for the circular grating delineation eccentricity is proposed.