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Japanese

New Automatic Rotary Test Chart Using Polyester-Film Sadayoshi Kamiya 1 , Shigeo Mitsuya 2 1Nagoya City, Nara Medical College 2Nitten Medical Systemic Research Institute pp.1241-1245
Published Date 1974/11/15
DOI https://doi.org/10.11477/mf.1410205207
  • Abstract
  • Look Inside

A new automatic rotary test chart using polyester-film which has excellent optical cha-racteristics (good light transparency, non-light-scattering and good plasticity) is realized. The Landolt ring reprinted by light chemical reaction is taken from only one original large (×5) Landolt ring comforming to the international Landolt ring scale. This apparatus has an end-less structure and a control box for remote o-peration.

Polyester-film has a light transparency in the vertical orientation and it can be reprinted on the back side. This Landolt test chart has ex-quisite regularity with the maximum error of 0.01.


Copyright © 1974, Igaku-Shoin Ltd. All rights reserved.

基本情報

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

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