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《JOURNAL OF NORTHERN JIAOTONG UNIVERSITY》 1998-04
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Noncontact Holographic Optical Measuring Method of the Surface Profile

Wang Xiaofei Luo Hongkui Guo Hongxi (College of Electronics and Information Engineering, College of Mechanical and Electrical Engineering , Northern Jiaotong University,Beijing 100044)  
A new noncontact holographic optical measuring method of the surface profile was discussed. By using holographic optical element (HOE) to replace the conventional optical element, as a defocusing testing device,measuring precision and range can be improved.
【CateGory Index】: O4-34
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