ISSN 0439-755X
CN 11-1911/B
主办：中国心理学会
　　　中国科学院心理研究所
出版：科学出版社

心理学报 ›› 1979, Vol. 11 ›› Issue (3): 67-73.

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照度变化对视觉辨认的影响

喻柏林;焦书兰;荆其诚;陈永明   

  1. 中国科学院心理研究所 ,中国科学院心理研究所 ,中国科学院心理研究所 ,中国科学院心理研究所
  • 发布日期:1979-09-25 出版日期:1979-09-25
  • 通讯作者: 喻柏林

EFFECT OF CHANGE OF ILLUMINATION ON VISUAL DISCRIMINATION

Yu Bo-lin;Jiao Shu-lan;Ching Chi-cheng;Chen Yong-ming Institute of Psychology, Academia Sinica   

  • Online:1979-09-25 Published:1979-09-25

摘要： <正> 前 言 近年来,关于工业企业和民用照明视觉功能的探讨逐渐多起来,这方面的研究对于制定照度标准和保护视力有着现实意义。我国过去的研究虽获得不少有益结果,但大多是在一般照明环境中、照度一般在几百勒克斯以下,以阅读视力表作为视觉功能指标。本研究是在比较严格控制的近似等效球照度的实验条件下,在1.7-2160Lux照度范围内,控制观察时间,探讨照度变化对视觉辨认的影响。此外,我们还研究了两种背景(亮和暗)对视觉辨认的影响。

关键词: NULL

Abstract: 20 subjects were tested with Landolt ring tasks under condition similar to equi-valent sphere illumination. The sizes of the rings were 0.5′-10.0′in eight steps of visual augle, illumination range was 1.7-2160 lux. It was found that visual angle forcorrect discrimination is a function of illumination and that with further increase inillumination there is a slowing down in improvement in visual acuity which followsthe "law of diminishing returns". This law may be applied to classification of illu-mination levels in specifying standards of illumination. The present study also compared visual effects of positive and negative contrasts.It proved that with the same illumination and same high contrast tasks the visual ef-fect of dark (black) background is better than that of light (white) background. Thisimplies that for lower reflectance areas a higher illumination should be prescribed.

Key words: NULL