記事概要

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記事タイトル
ウェルビーイングを高めるサーカディアン照明に必要な光とは
発刊年月日
2025年11月 Vol.109 第6号
著者名
森元 由利
企業・団体名
日亜化学工業(株)
記事種別
特集資料・講演など
抄録(ABSTRACT)
Circadian lighting is a type of Human Centric Lighting that has recently been increasing as an office lighting to enhance people's well-being. Circadian lighting usually refers to a color-tunable lighting that changes the color of light according to the sunlight in a day. However, in order to regulate the circadian rhythm, the wavelengths around 480nm are important as they stimulate the intrinsically photosensitive retinal ganglion cells (ipRGC) that contribute to melatonin suppression. This paper describes how light from outside sources affects human's circadian rhythm and suggests the light required for the true circadian lighting that physiologically works for the circadian rhythm from the LED's emission spectrum perspective.
図表タイトル

図1 azure色(空色)LED+電球色LED,標準光源,一般的なRa≥80 光源の色温度別メラノピック比比較 Fig.1 Melanopic ratio comparison of azure + warm white LEDs, standard light source, and Ra≥80 light source by correlated color temperature(CCT)
図2 480 nmの波長の効果に関する実証実験結果 Fig.2 Test results to verify the effects of 480 nm wavelength.

キーワード
ヒューマン・セントリック・ライティング | メラノピック照度 | WELL認証 | 480nm波長 | human centric lighting | melanopic lx | WELL building standard | 480nm wavelength | ipRGC | サーカディアンリズム | circadian rhythm

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