@article{oai:nagasaki-u.repo.nii.ac.jp:00014513, author = {佐賀, 信裕 and 岩崎, 昌平 and 田中, 和雅}, issue = {19}, journal = {長崎大学工学部研究報告, Reports of the Faculty of Engineering, Nagasaki University}, month = {Aug}, note = {The diffraction field of a laser beam through a finite aperture lens is investigated. The transverse and the longitudinal field distributions vary depending on the focal length and the aperture radius of the lens. The variations of the field in the Fresnel region become noticeable as the observation point approaches the lens. The theoretical and the experimental results coincide within the experimental errors when the observation point is far from the lens but the difference between them becomes salient as it comes to the lens., 長崎大学工学部研究報告, (19), pp.55-58; 1982}, pages = {55--58}, title = {有限開口レンズによるレーザビーム回折界の界分布}, year = {1982} }