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内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
作者机构:Nikon Inc Core Technol Ctr Shinagawa Ku Tokyo 1408601 Japan
出 版 物:《OPTICS EXPRESS》 (Opt. Express)
年 卷 期:2011年第19卷第15期
页 面:14268-14276页
核心收录:
学科分类:070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学]
主 题:Computation methods Discrete Fourier transforms Fast Fourier transforms Fourier transforms Propagation methods
摘 要:Nyquist sampling theorem in an image calculation with angular spectrum method restricts a propagation distance and a focal length of a lens. In order to avoid these restrictions, we studied suitable expressions for the image computations depending on their conditions. Additionally, a lateral scale in an observation plane can be magnified freely by using a scaled convolution in each expression. (C)2011 Optical Society of America