| 正弦振幅光栅菲涅耳衍射光场的空间分布 |
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| 引用本文： | 吴雪云,苏显渝.正弦振幅光栅菲涅耳衍射光场的空间分布[J].四川激光,2002,23(1):30-33. |
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| 作者姓名： | 吴雪云 苏显渝 |
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| 作者单位： | 四川大学光电科学技术系 成都610064
(吴雪云)，四川大学光电科学技术系 成都610064(苏显渝) |
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| 摘 要： | 在三维传感系统中通常采用结构照明光场。产生结构照明光场的方法一般有投影法和双光束干涉法。本文利用平面波衍射理论（角谱理论），分析了正弦振幅光栅在不同照明条件下的菲涅耳衍射光场的空间分布，特别讨论了在发散球面波照明条件下，菲涅耳衍射光场和泰伯像的一些有趣的性质，指出了这些性质在三维传感中的应用前景。
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| 关 键 词： | 菲涅耳衍射 光栅 空间分布 正弦振幅 光场 |
| 修稿时间： | 2001年9月1日 |
The spatial distribution of fresnel diffraction field of sinusoidal amplitude grating |
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| Wu Xueyun,Su Xianyu.The spatial distribution of fresnel diffraction field of sinusoidal amplitude grating[J].Laser Journal,2002,23(1):30-33. |
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| Authors: | Wu Xueyun Su Xianyu |
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| Abstract: | Generally,structured illumination field is adopted in 3-D sensing system.For generating structured illumination field,projection method and double-light beam interferencing method are both common ways.By applying RSD theory,we analyze the spatial distribution of Fresnel diffraction field of sinusoidal amplitude grating under different illuminating conditions.And we especially discussed some interesting properties about Fresnel diffraction field and Talbot image,when the grating is illuminated by divergent spherical wave.The promising application in 3-D sensing with these properties are also present in this paper. |
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| Keywords: | Fresnel diffraction Talbot distance 3-D sensing grating structured illumination |
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