【摘要】 根据衍射理论讨论了周期物体的菲涅耳衍射 ,结果表明 ,无论在横向还是纵向菲涅耳衍射场均成周期性变化 ,且在特定距离处菲涅耳衍射场就是周期物的再现 .更多还原

【Abstract】 Based on the Fresnel diffraction theory, the one-dimensional periodeic objects′ Fresnel diffraction is discussed. It is shown that the diffraction field is periodic both in x and z direction, and there is self-imaging phenomenon in some distances.更多还原