| 一种可实现电子散斑干涉的新型大错位方棱镜 |
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| 引用本文： | 刘瑞金,孙平.一种可实现电子散斑干涉的新型大错位方棱镜[J].应用光学,2011,32(1). |
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| 作者姓名： | 刘瑞金 孙平 |
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| 作者单位： | 1. 山东师范大学,物理与电子科学学院,山东,济南,250014;山东理工大学,理学院,山东,淄博,255049
2. 山东师范大学,物理与电子科学学院,山东,济南,250014 |
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| 摘 要： | 设计了一种可实现电子散斑干涉的大错位方棱镜.将普通方棱镜的一个面磨去一个楔角后变为斜面,该斜面和相邻的一个面镀反射膜,其他二个面镀增透膜.垂直入射的光线经过分光后变成二束光,分别经过平面反射和斜面反射,出射的二束光线就分开了.将该大错位方棱镜置于CCD镜头前,一个物体可以成二个错位的像;相邻的二个物体可叠加成像.错位量由楔角决定,错位量足够大,可实现大错位电子散斑干涉.根据试件大小和成像距离,楔角的大小可选择在1°到10°之间.对中心加载周边固定圆盘进行了电子散斑载频干涉实验,证明了大错位方棱镜能够高质量地实现电子散斑干涉,实现位移场测量.
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| 关 键 词： | 光学测量 电子散斑干涉 大错位方棱镜 |
Large-shearing block prism in electronic speckle pattern interferometry |
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| LIU Rui-jin,SUN Ping.Large-shearing block prism in electronic speckle pattern interferometry[J].Journal of Applied Optics,2011,32(1). |
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| Authors: | LIU Rui-jin SUN Ping |
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| Institution: | LIU Rui-jin1,2,SUN Ping1(1.College of Physics and Electronics,Shandong Normal University,Jinan 250014,China,2.Department of Physics,Shandong University of Technology,Zibo 255049,China) |
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| Abstract: | A large-shearing block prism is designed,which can be used in electronic speckle pattern interferometry(ESPI).A wedge is made of a beam splitter cube on one of its surface.The oblique plane and one of its adjacent surfaces of the block are coated by reflection enhancing film.And other two surfaces are coated by anti-reflection films.When a normal incidence beam arrives at one of the reflect-reducing coating surfaces,the beam is split into two after inner beam-splitter.The two outgoing beams can be separated... |
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| Keywords: | optical measurement electronic speckle pattern interferometry(ESPI) large-shearing block prism |
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