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Journal of light & visual environment
Journal of light & visual environment
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by Illuminating Engineering Society of Japan
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eye 23

We propose a light-emitting diode (LED) flat lighting panel that is capable of seamless connection by optimizing the shape of the optical elements, as well as the concentration of the scattering particles used in the diffuser material. The LED flat lighting panels that we develop can be connected to other panels while maintaining a uniformity of 90% throughout the entire surface. The results of subjective experiments reveal that the seams between the connected LED flat panels are virtually...
by Illuminating Engineering Society of Japan
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eye 20

“Journal of Science and Technology in Lighting” is an English-language publication of the Illuminating Engineering Institute of Japan that is issued with the aim of introducing advances international studies and the technology of lighting engineering to a wide audience, and in addition to presenting articles on lighting fundamentals and applications, also includes papers, letters, and research notes the like in a wide range of fields, such as the generation and application of light, vision...
by Illuminating Engineering Society of Japan
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eye 20

Landscape Design Standards for Lighting Established by Landscape Plans Prescribed in the Landscape Act
by Japan Association of Mineralogical Sciences
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eye 23

Prosopite is an alumino–fluoride of calcium mineral. The chemical compositions of prosopite samples obtained from Zacatecas (Mexico), Ivigtut (Greenland), and Katugin deposit (Eastern Siberia, Russia) were determined using scanning electron microscopy and energy–dispersive X–ray spectroscopy. The fluorine content (in apfu) was between 4 and 5, and those less than 4 were not observed. The empirical formula derived as a mean of chemical compositions of multiple grains from Ivigtut is...
by Japan Association of Mineralogical Sciences
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eye 71

Organic minerals are natural organic compounds with both well-defined chemical composition and crystallographic properties; their occurrences show traces of the high concentration of certain organic compounds in natural environments. Thus the origin and formation process of organic minerals will lead us to understand the fate and behavior of the organic molecules in the lithosphere. All of each organic mineral can be classified into the one of following two groups: ionic organic minerals in...