光斑尺寸和空间滤波系统的针孔光阑直径有关。
The focal spot, size depend on the pinhole diaphragm diameter of spatial filter.
提出了运用针孔光阑来提高细长柱形物边缘检测精度的方法。
A new method for improving the measurement accuracy of slender column's edge is proposed in the paper.
提出了运用针孔光阑来提高细长柱形物边缘检测精度的方法。
A new method for improving the measurement accuracy of slender column's edge is proposed in the paper.
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