建築照明学研究室（Architectural Lighting Laboratory）-古賀靖子准教授
古賀研究室では、建築内外の光環境の設計・評価・制御について、環境の物理的側面、人間の心理的生理的側面から研究を行っています。
固体光源（LEDや有機EL）の照明応用（SSL）について、快適性と健康性の高い光空間設計の考え方を示すために、分光分布とヒトの視覚応答との関係を研究しています。また、健康的な建築環境のために、窓など建物外皮に設ける採光用開口の機能と性能を整理し、建築のデジタルデザインに適用する指標と設計方法の研究を開始しました。昼光と日射の長期連続測定、各種昼光モデルの開発を行った経験から、建物における昼光利用と建築照明の統合技術についても取り組んでいます。さらに、自動車を移動居住空間としてとらえ、その照明について研究しています。LED光源を用いた前照灯や尾灯、自動車室内の視環境の評価が研究課題です。
国際的な活動として、屋内視環境や屋内照明の設計に関する国際標準化活動、昼光照明に関する国際研究活動（国際エネルギー機関の太陽熱利用冷暖房プログラムIEA-SHC）に参加しています。これまで、天空輝度モデルおよび屋内視環境の設計プロセスに関するISO規格、国際照明専門用語集の作成を分担しました。
Light is indispensable to human beings. Koga Laboratory is working on design, assessment and control of indoor and outdoor luminous environments in terms of environmental physics and human psychology and physiology through visual perception.
Main research topics are solid-state lighting (SSL), daylighting and integrative lighting. In order to present an approach to designing luminous space for comfort and health, we are working on human visual responses to light with different spectral power distributions. Those responses are relevant to visual and non-visual effects of optical radiation. Conventional metrics of light are insufficient to quantify various visual responses and perception through retinal photosensitive cells (rods, cones and intrinsically photosensitive retinal ganglion cells). A key issue is making a model of human nonlinear visual responses. For the healthful building environment, we have launched research on the parametric design process for the building envelope and daylight openings. Past experience of long-term measurement of daylight and solar radiation and development of various daylight models has developed research on a façade system autonomously shading direct sunlight with daylight monitoring. In recent years, we have been working on automotive lighting as well. Issues are glare control for LED head and rear lights and improvement of indoor visual environment.
Besides, we are involved in international standardization activities for indoor visual environment and lighting in buildings. Dr. Koga drafted ISO standards on the spatial distribution of daylight (ISO 15469/CIE S 011) and design process for the indoor visual environment (ISO 16817), and the International Lighting Vocabulary (CIE S 017). We have participated in research projects (tasks) on daylighting in the Solar Heating and Cooling Programme (SHC) of the International Energy Agency (IEA). A new task “Integrated Solutions for Daylight and Electric Lighting” will start in 2018.
＜主要な研究テーマ：Main Research Topic＞
- 分光分布に基づく光空間デザイン – 光の視覚的・非視覚的効果
- 紫色LED励起型白色光源の光特性評価 – 照明の質
- 建物外皮における窓の設計 – 光と健康
- 自動車の視環境評価
- Design of luminous space on the basis of the spectral power distribution – visual and non-visual effects of light
- Luminous property assessment of phosphor-converted white LED light sources of violet-LED excitation type – lighting quality
- Parametric design of daylight openings on the building envelope – light and health
- Assessment of the visual environment of automobiles
