Influence of color temperature on comfort and preference for LED indoor lighting

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• 作者：Qing Wang^a ; ^b ; ^{wangqing051@126.com" class="auth_mail" title="E-mail the corresponding author} ; Haisong Xu^a ; ^{chsxu@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Fuzheng Zhang^a ; ^{zh-fuzheng@163.com" class="auth_mail" title="E-mail the corresponding author} ; Zhehong Wang^c ; ^{wangzhehong1981@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：LED indoor lighting ; Correlated color temperature ; Comfort ; Preference ; Illuminance ; Kruithof&rsquo ; s rule
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：21-29
• 全文大小：1182 K

文摘

Correlated color temperature (CCT) is one of the most important lighting factors to influence the subjective perceptions, while there currently are few researches involving a wide range of CCT to study the comfort and preference within specific indoor scenarios. Therefore a psychophysical experiment with the method of forced choice was carried out in a light-emitting diode (LED) light booth with a panel of twelve observers to evaluate these estimations with different combinations of CCT and illuminance. The results show that Kruithof’s rule is just a qualitative conclusion rather than an accurate expression about pleasing combination of CCT and illuminance, and that illuminance is not a significant factor to influence the estimations if it is limited within a moderate range. The detailed analysis indicates that CCT has significant impact on the subjective comfort and preference, and a set of models were proposed to predict these subjective perceptions for the scenarios of relaxing and working.