TY - JOUR AU - Kalustova, Daria AU - Kornaga, Vasyl AU - Rybalochka, Andrii AU - Yu, Ying-Jie AU - Valyukh, Sergiy PY - 2020/03/31 Y2 - 2024/03/29 TI - Colour temperature tunable RGBW clusters with 3 control channels JF - Photonics Letters of Poland JA - Photonics Lett. Pol. VL - 12 IS - 1 SE - Articles DO - 10.4302/plp.v12i1.968 UR - https://www.photonics.pl/PLP/index.php/letters/article/view/12-4 SP - 10-12 AB - <p>The work is devoted to development of a smart lighting system that is able to change correlated colour temperature and consists of tunable 4-components RGBW clusters controlled via three channels. It is shown that fixing a ratio between the intensities of white and red LEDs at a level of 100:9 enables obtaining high values of colour rendering in a wide range of correlated colour temperatures. A control of 3 from 4 channels simplifies the system. The influence of the red LED on CRI and luminous efficiency is analysed.</p><p><br /> Full Text: <a class="file" href="/PLP/index.php/letters/article/view/12-4/605" target="_parent">PDF</a> <br /> <strong></strong></p><p><strong>References:</strong></p><ol><li>J. Gooley, S. Rajaratnam, G. Brainard, R. Kronauer, C. Czeisler and S. Lockley, "Spectral Responses of the Human Circadian System Depend on the Irradiance and Duration of Exposure to Light", Sci Transl Med 2, 31 (2010) <a href="https://doi.org/10.1126/scitranslmed.3000741">[CrossRef]</a></li><li>A. Borisuit, F. Linhart, J. Scartexxini, M. Munch, Light Res Technol 47, 192 (2014) <a href="https://doi.org/10.1177/1477153514531518">[CrossRef]</a></li><li>Q. Dai, W. Cai, L. Hao, W Shi and Z. Wang, Light Res Technol 50 (8), 1198-1211 (2017), <a href="https://doi.org/10.1177/1477153517733504">[CrossRef]</a></li><li>V. Kornaga, V. Sorokin, A. Rybalochka, O. Oliinyk and N. Kornaga, Semicond Phys Quantum Electron Optoelectron 18, 302 (2015) <a href="https://doi.org/10.15407/spqeo18.03.302">[CrossRef]</a></li><li>Illuminating Engineering Society, ANSI/IES TM-30-18 IES method for evaluating light source color rendition (2018). New York, NY<a href="https://www.ies.org/product/ies-method-for-evaluating-light-source-color-rendition/">[DirectLink]</a></li><li>Commission International de l'Éclairage, CIE 224:2017 Colour fidelity index for accurate scientific use (2017). Vienna <a href="http://cie.co.at/publications/cie-2017-colour-fidelity-index-accurate-scientific-use">[CrossRef]</a></li><li>V. Kornaga, D. Kalustova and O. Oliynyk, Int Sci Conf "Light and power eng: hist, probl, perspect" 6, 43 (2018) <a href="http://elartu.tntu.edu.ua/handle/lib/24285">[DirectLink]</a></li></ol> ER -