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JJG63-83样板直尺检定规程规定;“样板直尺是以光隙法检定精密平面的直线度及平面度的量具”。因此,确定样板直尺的精密指标时,要考虑光隙法的测量误差。那么,光隙法的测量误差如何影响样板直尺的精度指标呢?影响光隙法的测量精度有哪些因素?本文在此简述。光隙法的测量精度取决于观测可见光隙量的大小。由光学原理可知,光线透过间隙形成光隙,光的干涉和衍射会使光隙的大小受到影响。光隙的大小是光干涉和衍射的综合结
JJG63-83 template rule ruler test regulations; “model ruler is the precision of the optical aperture test flatness and flatness of the measuring tool.” Therefore, to determine the precision index ruler model, to consider the measurement method of the gap error. So, how does the measurement error of the light gap method affect the accuracy index of the model ruler? What factors affect the measurement accuracy of the light gap method? This article is briefed here. The measurement accuracy of the aperture method depends on the size of the visible light gap. The optical principle shows that the light through the gap to form a light gap, light interference and diffraction will make the size of the light gap is affected. The size of the optical gap is a composite of light interference and diffraction