Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances
In this study, red, green, cyan, warm white and cool white (RGCWW) LEDs are individually controlled to simulate dynamic daylight. The spectral power distributions (SPDs) are measured for both the daylight and the mixed white light. The correlated color temperature (CCT), circadian action factor (CAF...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8889752/ |
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| author | Jingxin Nie Zhizhong Chen Fei Jiao Chengcheng Li Jinglin Zhan Yifan Chen Yiyong Chen XiangNing Kang Yongzhi Wang Qi Wang Weimin Dang Wentian Dong Shuzhe Zhou Xin Yu GuoYi Zhang Bo Shen |
| author_facet | Jingxin Nie Zhizhong Chen Fei Jiao Chengcheng Li Jinglin Zhan Yifan Chen Yiyong Chen XiangNing Kang Yongzhi Wang Qi Wang Weimin Dang Wentian Dong Shuzhe Zhou Xin Yu GuoYi Zhang Bo Shen |
| author_sort | Jingxin Nie |
| collection | DOAJ |
| description | In this study, red, green, cyan, warm white and cool white (RGCWW) LEDs are individually controlled to simulate dynamic daylight. The spectral power distributions (SPDs) are measured for both the daylight and the mixed white light. The correlated color temperature (CCT), circadian action factor (CAF) curves in the daytime of the mixed white LED almost overlap to those of daylight with a small error of about 1%. The CIE chromaticity coordinates of the mixed white light are distributed along the Planckian locus with a little deviation below 0.003. Also, its color rendering index (CRI) is above 90. The RGCWW five-chip LEDs of high circadian and visual performances will benefit to synchronize circadian rhythm in closed environment during long time without daylight, combined with better mood and alertness. The simulation errors and development trend of the mixed lighting are discussed. |
| format | Article |
| id | doaj-art-efb83a0fb9194ffeb74178a84e66f44f |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-efb83a0fb9194ffeb74178a84e66f44f2025-08-20T03:32:54ZengIEEEIEEE Photonics Journal1943-06552019-01-0111611210.1109/JPHOT.2019.29508348889752Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual PerformancesJingxin Nie0Zhizhong Chen1https://orcid.org/0000-0003-3321-2352Fei Jiao2Chengcheng Li3Jinglin Zhan4Yifan Chen5Yiyong Chen6XiangNing Kang7Yongzhi Wang8Qi Wang9Weimin Dang10Wentian Dong11Shuzhe Zhou12Xin Yu13GuoYi Zhang14Bo Shen15State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaDongguan Institute of Optoelectronics, Peking University, Dongguan, ChinaDongguan Institute of Optoelectronics, Peking University, Dongguan, ChinaPeking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, ChinaPeking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, ChinaPeking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, ChinaPeking University Sixth Hospital, Peking University Institute of Mental Health, Key Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaIn this study, red, green, cyan, warm white and cool white (RGCWW) LEDs are individually controlled to simulate dynamic daylight. The spectral power distributions (SPDs) are measured for both the daylight and the mixed white light. The correlated color temperature (CCT), circadian action factor (CAF) curves in the daytime of the mixed white LED almost overlap to those of daylight with a small error of about 1%. The CIE chromaticity coordinates of the mixed white light are distributed along the Planckian locus with a little deviation below 0.003. Also, its color rendering index (CRI) is above 90. The RGCWW five-chip LEDs of high circadian and visual performances will benefit to synchronize circadian rhythm in closed environment during long time without daylight, combined with better mood and alertness. The simulation errors and development trend of the mixed lighting are discussed.https://ieeexplore.ieee.org/document/8889752/Circadian rhythmlight emitting diodemixed white lightcircadian action factorcolor rendering index. |
| spellingShingle | Jingxin Nie Zhizhong Chen Fei Jiao Chengcheng Li Jinglin Zhan Yifan Chen Yiyong Chen XiangNing Kang Yongzhi Wang Qi Wang Weimin Dang Wentian Dong Shuzhe Zhou Xin Yu GuoYi Zhang Bo Shen Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances IEEE Photonics Journal Circadian rhythm light emitting diode mixed white light circadian action factor color rendering index. |
| title | Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances |
| title_full | Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances |
| title_fullStr | Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances |
| title_full_unstemmed | Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances |
| title_short | Tunable LED Lighting With Five Channels of RGCWW for High Circadian and Visual Performances |
| title_sort | tunable led lighting with five channels of rgcww for high circadian and visual performances |
| topic | Circadian rhythm light emitting diode mixed white light circadian action factor color rendering index. |
| url | https://ieeexplore.ieee.org/document/8889752/ |
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