分析介质圆柱尺寸的非接触光学检验法可以得出,衍射法是在拉伸过程中测量物体的最精确和最方便的方法。圆柱直径由特性参数—衍射图最小值的角位置或线位置来决定。但是查明,在透明介质圆柱上衍射时,存在着衍射光和通过纤维的直进 Non-contact optical inspection, which analyzes the size of the media cylinder, leads to the most accurate and convenient method of measuring objects during stretching. Cylinder diameter is determined by the characteristic parameter - the angular position or line position of the minimum diffraction pattern. However, it has been found that when diffracted on a transparent medium cylinder, there is diffracted light and straightness