采用了双光束干涉的迈克尔逊干涉仪系统的傅里叶变换红外光谱仪，在动镜运动过程中，动镜可能在三个方向发生倾斜。
The Michelson interferometer system which has two-beam interference is applied in Fourier Transform interferometer, the moving mirror could tilt in three directions in motion.
该方案只使用平面反射镜，对于运动部件的精度要求比较低，对倾斜、磨损等不敏感。
This method requires only plane mirrors, and it is immune to tilt, wearing etc.
通过将横向剪切干涉仪光路展开，得出反射镜角度变化与干涉条纹倾斜角和线对数变化之间的关系。
By unfolded the Lateral Shear Interferometer, the relationship between the line pairs and the tilt of strip with the tilt of reflected mirrors was derived.
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