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汉字是世界上最重要的文字之一。本文对阅读汉字所需要的照度条件进行探讨。日本学者对汉字的可读程度曾有研究，但其结论不很符合中国国情。为此对汉字阅读照明条件做了实验。以视力正常的中国青年为被试，在不同的照度条件之下（５０～２０００ｌｘ），对四种最常用汉字印刷字型与不同质量的纸张形成的几种亮度对比下进行视力的检查。实验室内用扩散光环境，以避免反射眩光。查明了纸面与视线间不同倾角对可见度值没有显著的影响。识别对象用整个汉字而不是用字体中的单个笔划是符合阅读的实际情况的。
Chinese characters are one of the most important words in the world. This article discusses the illumination conditions needed to read Chinese characters. Japanese scholars have studied the readability of Chinese characters, but their conclusions are not very consistent with China’s national conditions. For this reason, experiments were performed on the Chinese reading lighting conditions. For young Chinese young people with normal vision, under different illumination conditions (50 to 2000 lx), visual acuity was checked against the brightness contrasts of the four most commonly used Chinese print patterns and different quality papers. A diffuse light environment is used in the laboratory to avoid reflection glare. It was found that there is no significant effect of the different dips between the paper and the line of sight on the visibility value. Identifying the object using the entire Chinese character instead of using a single stroke in the font is in line with the actual situation of reading.