| 주 저자 | Kim, In-Tae |
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| 공동 저자 | A.S. Choi, J.W. Jeong. |
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| 소속 | Department of Architectural Engineering, Sejong University, Kunja-Dong, Kwangjin-Gu, Seoul 143-747, Republic of Korea |
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| Abstract | Correlated color temperature (CCT) affecting emotional feelings should be adequately adjusted according
to the change of atmosphere. To control CCT, luminaires use a specific method, which combines higher
CCT of the lamps and the lower ones. However, when two different CCT lamps are combined, the realization
of target CCT using a simple proportional equation is not appropriate. Therefore, this study
assessed three different methods to calculate appropriate combination ratio for two different CCT light
emitting diode (LED) lamps, and then measurements were conducted with calculated values from such
methods in order to find the precise control of CCT. The first method is to calculate the combination ratio
by using a simple proportional equation. The second method is to calculate the combination ratio by
considering a change of the characteristics of light according to dimming. Lastly, third method is to
calculate the combination ratio by using the McCamy’s Equation along with a change of tristimulus
values according to dimming lamps. The most appropriate method has been identified by comparison
between target CCT and measured CCT values. This study also evaluated how the calculated CCT values
were measured in an architectural space. As a result, the third method is the most appropriate one, and
proven to be used in the architectural space. The third calculation method based on CCT tunable lighting
system will lead to more suitable luminous environment and then enhance visual and emotional aspects
of occupants in a luminous environment. |
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| Keyword | CCT (correlated color temperature), CCT combination, CCT control
White LED luminaire, CCT tunable luminaire, Luminous environment |
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| 페이지 | pp. 302~312 |
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| 논문 파일 |
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| 게재일시 |
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| DOI | - |
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| 학회/저널명 | Building and Environment Vol.57 |
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| 년도 | 2012 |
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| 추가 문구 | http://dx.doi.org/10.1016/j.buildenv.2012.06.001 |
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| 등록 일시 | 2025-06-18 13:38:21 |
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