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Journals >Chinese Optics Letters >Volume 13 >Issue 7 >Page 073301 > Article

Chinese Optics Letters
Vol. 13, Issue 7, 073301 (2015)

Chromaticity of white sensation for LED lighting

Qing Wang¹, Haisong Xu^1,*, and Jianqi Cai²

Author Affiliations

¹State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China

²Visual Health and Safety Institute, China National Institute of Standardization, Beijing 100088, China

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DOI: 10.3788/COL201513.073301 Cite this Article Set citation alerts

Qing Wang, Haisong Xu, Jianqi Cai, "Chromaticity of white sensation for LED lighting," Chin. Opt. Lett. 13, 073301 (2015) Copy Citation Text

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Abstract

In this work, a psychophysical experiment is implemented to assess the white sensation of light-emitting diode (LED) lighting in illuminant mode via a categorical judgment method by a panel of 10 observers. The visual data indicates that the higher values of white sensation estimations locate near the Planckian locus within a correlated color temperature (CCT) range of 5000–9000 K. A model of white sensation for LED lighting in illuminant mode is proposed, from which the predicted maximal white sensation locates near the Planckian locus with a CCT of 6622 K, and the 95% white sensation covers a narrow two-dimensional region.

{\begin{cases} WS = A \times \exp {(\frac{- (D_{u^{'} v^{'}} - α)}{0.0413})}^{2} \times 100 % \\ A = - 1.9748 \times {(\log_{10} T)}^{2} + 15.3956 \times \log_{10} T - 29.0453 \\ α = - 0.0597 \times {(\log_{10} T)}^{2} + 0.47479 \times \log_{10} T - 0.9465 \end{cases},

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Qing Wang, Haisong Xu, Jianqi Cai, "Chromaticity of white sensation for LED lighting," Chin. Opt. Lett. 13, 073301 (2015)

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