earticle

영어

The development of LED (Light Emitting Diode) is drawing the attention in terms of saving of energy for global warming. Moreover, since LED can vary their own colors easily, the companies which develop and deal in LED exaggerate the advantages of LED as follow: 1)LED can express lighting colors in according with circadian rhythm; 2)LED can change the impression of the room by the colored lights; 3)LED can appropriately adjust the relationship between the color temperature and the illuminance. We discuss that these effects of LED are limited due to human perception and the development and the use of LED should be done based on human perceptual characteristics.

일본어

LED照明は，その耐久性，低消費電力などから地球温暖化のための省エネルギー対策として注目されてきた．しかし，企業はLED照明の省エネルギー以外の利点として，主として調色の容易さを生かした商品開発，商品販売を展開しつつある．そこで，本論文においては，企業が強調する調色の利点を1)サーカディアン・リズムと合致する調色，2)光色がもたらす照明空間の雰囲気，3)快適性を実現する色温度と照度の関係，の3つの観点から整理して論じた．さらに，人間の知覚特性を考慮すれば，LED照明の調色の心理的効果は限定されることを考察し，LED照明の調色，調光には人間の知覚特性を考慮する必要性を論じた．