Influence of chromatic and lighting on the visual environment of the elderly: A critical literature review

Guerry, Estelle; Caumon, Céline; Bécheras, Elodie; Zissis, Georges

doi:10.1002/col.22562

Cited by 1 publication

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, lighting companies have released LED light sources with a CRI higher than 95 to realize a spectrum like natural light [19]. However, natural light shows a correlated color temperature (CCT) value of about 2900 K at sunset and about 6000 K or more at noon on a clear day [20]. Natural light provides high CRI light under different light and color conditions every moment.…”

Section: Introductionmentioning

confidence: 99%

CRI-Based Smart Lighting System That Provides Characteristics of Natural Light

Oh,

Lim

2023

Information

View full text Add to dashboard Cite

Natural light continuously changes its correlated color temperature (CCT) from sunrise to sunset, providing the best color reproducibility and healthy light. In the lighting field, efforts have been made to improve the Color Rendering Index (CRI) to provide light quality at the same level as natural light. A unique light source technology that mixes and controls multiple LED light sources with different spectral or CCT characteristics or provides a high color rendering index has been introduced. However, the characteristics of natural light, which provide high CRI light while changing color temperature every moment, could not be reproduced as they were. Therefore, in this paper, we propose a CRI-based smart lighting system that reproduces natural light characteristics, provides light with high color reproducibility, and maintains homeostasis even under the changing environment of natural light CCT. After extracting the CCT for each day from the characteristics of measured natural light, the light with the highest CRI under the CCT condition for each hour was provided through a CRI-based CCT matching algorithm. Performance evaluation was conducted for four-channel LED experimental lighting. For each clear and cloudy day, daily natural light was reproduced with a light quality higher than average CRI 98 within the MAE range of CCT 6.78 K.

show abstract

Section: Introductionmentioning

confidence: 99%