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Japanese

Focusing Error of the Fundus Camera with Line Split Focusing System Yoshimi Kohayakawa 1 , Isao Matsumura 1 , Haruhisa Madate 1 1Canon Inc. pp.1511-1513
Published Date 1977/12/15
DOI https://doi.org/10.11477/mf.1410207551
  • Abstract
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A new focusing system for the fundus camera used without mydriatic is introduced, in which split lines are projected onto the fundus and observed by infrared television. The principle and the features of the system are discussed in com-parison with conventional means. The focusing error was experimentally obtained. The degrada-tion of MTF by the focusing error was calcula-ted and compared with those of the optics of the apparatus and the film.


Copyright © 1977, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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