Dynamic lighting system for the learning environment: performance of elementary students.

Kyungah Choi,Hyeon-Jeong Suk

doi:10.1364/oe.24.00a907

Abstract

This study aims to investigate the effects of lighting color temperatures on elementary students' performance, and thereby propose a dynamic lighting system for a smart learning environment. Three empirical studies were conducted: First, physiological responses were measured as a potential mediator of performance. Second, cognitive and behavioral responses were observed during academic and recess activities. Lastly, the experiment was carried out in a real-life setting with prolonged exposure. With a comprehensive analysis of the three studies, three lighting presets-3500 K, 5000 K, and 6500 K-are suggested for easy, standard, and intensive activity, respectively. The study is expected to act as a good stepping stone for developing dynamic lighting systems to support students' performance in learning environments.

Highlights

Over the past few years, solid-state lighting has been emerging as a next-generation lighting technology
A repeated measures ANOVA indicated that the lowfrequency component (LF)/high-frequency component (HF) ratio differed statistically significantly between lightings (F(2,32) = 4.61, p < 0.05, ηp2 = 0.22)
The results of the study showed an increase in the LF and HF component (LF/HF) ratio during exposure to the 6500 K lighting (M = 1.14, standard deviations (SD) = 0.17), indicating that the 6500 K lighting is arousing

Summary

Introduction

Over the past few years, solid-state lighting has been emerging as a next-generation lighting technology. Solid-state lighting sources such as light-emitting diodes (LEDs) have become popular because they are highly efficient, physically small, long-lasting, energy saving, and environmentally friendly [1]. Another aspect of solid-state lighting that is important to many end users is a real-time tunable spectrum [2, 3]. Recent studies asserted that lighting with different correlated color temperatures (CCTs) has profound effects on both the physical and mental conditions of humans [4,5,6,7,8]. In addition to physiological effects, variable lighting CCTs exert a potential advantage indoors with respect to psychological state [4, 6]

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Results

Conclusion