著者

山家 哲雄

出版者

一般社団法人照明学会

雑誌

照明学会誌 = JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN (ISSN:00192341)

巻号頁・発行日

vol.91, no.12, pp.753-769, 2007-12-01

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When December comes, the Christmas market is held in each European country. Especially, the Federal Republic of Germany is the best place for the Christmas. And, Christmas illumination begins in each German city. Therefore, the city of each place in Germany becomes a very fantastic mood as that result. The landscape of the Christmas and the culture of the Christmas at various places in Germany are introduced by this paper.

著者

山口 秀樹 篠田 博之

出版者

一般社団法人照明学会

雑誌

照明学会誌 = JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN (ISSN:00192341)

巻号頁・発行日

vol.91, no.5, pp.266-271, 2007-05-01

参考文献数

11

被引用文献数

13 8

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In previous study, we defined the border luminance as space brightness and investigated what determines border luminance in a real environment. We undertook a second study to confirm that perceived brightness of a room is determined solely by border luminance. We also examined the correlation between change in the magnitude of space brightness and change in the border luminance. To investigate these two points, we measured space brightness using three methods: magnitude estimation, space-brightness matching, and border-luminance adjustment. We found that, the border luminance is the same even though the illuminance of the room or the configuration of interior surface reflectance is different, the matched illuminance is the same. The brightness value obtained using the magnitude estimation method was proportional to the 0.56-th power of the border luminance. Our results clearly show that space brightness can be evaluated quantitatively using border luminance adjustment even if the brightness cannot be measured using the horizontal illuminance. Therefore, measuring the border luminance is an effective way to supplement existing photometric systems.

著者

岩井 達弥 角舘 政英 武石 正宣 富田 泰行

出版者

一般社団法人照明学会

雑誌

照明学会誌 = JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN (ISSN:00192341)

巻号頁・発行日

vol.91, no.6, pp.302-311, 2007-06-01

被引用文献数

1

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This article reviews the terms used by light designers, and the way they proceed with their work, in the context of actual light design. The purpose of the article is to illustrate, in an easily understandable manner, multiple intentions underlying light design, and the way these intentions combine to create a certain light environment. The author also hopes to clarify how designers differ in their approach, and in their viewpoint regarding light planning.

著者

金 永模 福田 武司 鎌田 憲彦 小原 秀彦 横尾 敏明 木島 直人

出版者

社団法人照明学会

雑誌

照明学会誌 = JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN (ISSN:00192341)

巻号頁・発行日

vol.92, no.8, pp.472-477, 2008-08-01

参考文献数

10

被引用文献数

2

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Transparent glass films with homogeneously doped light emissive molecules can be prepared by using the sol-gel process. As part of our work on improving the durability of water-soluble polysilanes against UV light irradiation, we fabricated Eu(TTA)3Phen-doped sol-gel glasses and studied their optical characteristics. Using a three dimensional dense glass network protects the Eu complex from free oxygen and water in an ambient and also improves the durability without any loss of light output. By adding the Eu(TTA)3Phen beyond the limit of solubility in a starting solution, we demonstrated that the glass encapsulation prevents oxidation of the Eu-complex and also preserves its excitation intensity at a wavelength of 400 nm.