条纹宽度
When the slit of light source there is definite width W, the width of diffraction fringe should increase, and the minimum resolving angle Δθ k should be increasing, then the resolving power of actual grating system should be decreasing.
当光源狭缝还有一定宽度W时,衍射条纹将增宽,相应最小分辨角Δθk将增大,实际光栅系统的分辨本领将减小。
The measurement of diffraction fringe width, the tropism of incident light E and the transverse displacement of CCD are the main factors that influence this precision from the study of theoretical arithmetic and experiment.
理论计算和实验表明影响细丝直径测量精度的因素包括:衍射条纹宽度的测量、入射光波E取向和CCD的横向移动等。
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