Proceedings of Annual Conference of The Illuminating Engineering Institute of Japan
Proceedings of 2003 Annual Conference of The Illuminating Engineering Institute of Japan
Session ID : 36
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Development of New Hi-Efficiency Indirect Lighting System with Luminaire attached on Top Wall
*Shigeaki FujitaYoshiaki YasuokaShinya Nakao
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Abstract
In New Hi-Efficiency Indirect Lighting, New Luminaire(consist of Aluminium Reflector and Aluminium Louvers) was developed. New Luminaire's Efficiency was 93.7%. New Luninaire were attached on Top Wall, and Room Ceiling was lighted up New Luminaire.[Results] Under New Indirect Ligthing condition, compared with Direct Lighting(*1),1.Glare and Veiling Reflection phenomena never occurred.2.In Narrow space room(4 by 4m, ceiling height: 2.7 m), Horizontal Luminance(average) was 94.1%(measured value). 3.In Wide space room(more than 14 by 15.75m, ceiling height:2.7 m), Numbers of Luminaire were reduced to 86.8-90.6%(calculated value).[*1 Luminaire: Reflector and Louvers were coated with White Melamine ]
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© 2003 The Illuminating Engineering Institute of Japan
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