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莫尔条纹的电子学细分需要有一对光电正交的莫尔条纹信号。本文叙述了在圆光栅系统中产生裂相误差的四种原因和消除它们的办法。最后,在一台圆分度检验仪上已经得出了优于0.5°裂相误差的结果。
The moiré fringe electronics subdivision requires a pair of moiré fringe signals. This paper describes four reasons for the generation of split-phase errors in a circular grating system and ways to eliminate them. Finally, the result of a better than 0.5 ° fissile phase error has been obtained on a circular index tester.