JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN

Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341

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Volume 92, Issue 6

Displaying 1-15 of 15 articles from this issue

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(No.1228) Lighting of Kitami Credit Bank Head Office(Lighting Data Sheets)

Tadashi Oguro

Article type: Article
2008 Volume 92 Issue 6 Pages 281-282
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.281

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(No.1229)Lighting for Sapporo Yamaguchi Crematorium(Lighting Data Sheets)

Yuji Kaido

Article type: Article
2008 Volume 92 Issue 6 Pages 283-284
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.283

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(No.245) Lighting of Car Showroom HOKURIKU SUBARU(Lighting Photographs)

Masaaki Ota

Article type: Article
2008 Volume 92 Issue 6 Pages 285-
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.285

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(No.246)Lighting Facilities for Matsuzakaya Department Store(Lighting Photographs)

Koji Ikeda

Article type: Article
2008 Volume 92 Issue 6 Pages 286-
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.286

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Beyond the Border between Hardware and Software(Foreword)

Norihiko Kamata

Article type: Article
2008 Volume 92 Issue 6 Pages 287-
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.287

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General Remarks : Field of Various Solid State Luminescent Materials(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Yoichiro Nakanishi

Article type: Article
2008 Volume 92 Issue 6 Pages 288-290
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.288

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Radiation of light is available by radiation of heat or luminescence. The luminescence is emitted from mainly solid state materials called as phosphors when these are excited with several kind of energy. The phosphor consists of a host material and trace of ion(s) operating as luminescence center. The host materials must be pure and stoichiometric, and must not include impurities and defects to obtain strong emission. Many kind of phosphors have been developed for the progress of the field of displays and lighting.

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Various Phosphor Materials - Principle, History and Present Status of Phosphors-(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Takashi Kunimoto

Article type: Article
2008 Volume 92 Issue 6 Pages 291-296
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.291

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Phosphor is a substance which converts the external energy to the light. Phosphor materials are widely used for lighting, displays, detection systems for X-ray and so on, thus these make an important class of advanced materials in our time. In this literature, we will explain the principles of phosphors and introduce their history and present status.

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Current Stage and Problems on Research and Development of Nanophosphors(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Tetsuhiko Isobe

Article type: Article
2008 Volume 92 Issue 6 Pages 297-300
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.297

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I introduce you to recent topics on nanophosphors, i.e., their characteristic problems and applications in addition to overview of their wet chemical preparation.

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Development of LED Illuminations (1) : Outline of LED Illuminations(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Kanji Bando

Article type: Article
2008 Volume 92 Issue 6 Pages 301-306
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.301

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The efficiency of the white LED unit reached 150 lm/W, the highest value of the white light sources for general lighting. For the phosphors for LED, too, new material was developed, and improvement in color rendering properties is taking place. With a rapid improvement in performance for a background, practical application of LED lighting has been brought into view.

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Development of LED Illuminations (2) : Phosphor for LED(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Kanji Bando

Article type: Article
2008 Volume 92 Issue 6 Pages 307-310
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.307

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Development of 220-270 nm AlGaN-Based Deep-UV LEDs(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Hideki Hirayama

Article type: Article
2008 Volume 92 Issue 6 Pages 311-315
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.311

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We demonstrated AlGaN multi-quantum well (MQW) deep ultraviolet (UV) light-emitting diodes (LEDs) with wavelength shorter than 280nm on sapphire substrates. Low threading-dislocation density (TDD) AlN templates were used that was fabricated by using ammonia (NH3) pulse-flow multi-layer growth method. We obtained single-peaked electroluminescence (EL) from the 222-273nm AlGaN deep-UV LEDs. The maximum output power and external quantum efficiency (EQE) were 0.15mW and 0.2%, respectively, for the 227nm LED under room temperature (RT) pulsed operation, and 2.0mW and 0.32%, respectively, for the 255nm LED under RT CW operation.

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Prospect of Inorganic EL(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Shinji Okamoto

Article type: Article
2008 Volume 92 Issue 6 Pages 316-319
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.316

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Inorganic electroluminescence (EL) is classified into the categories of thin-film EL and powder EL. The former is aiming at flat panel display, and the latter aiming at solid light source. Their features and issues are described.

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An Overview of the Organic Light Emitting Diodes (OLEDs) and Small Molecular OLEDs(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Yukitoshi Jinde

Article type: Article
2008 Volume 92 Issue 6 Pages 320-324
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.320

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The greatest merit of using organic light emitting diodes (OLEDs) for illumination is that the plane emission of light is capable to be realized easily. Because there is not loss of the light by the member, for example, light reflector, light guide plate, the generated light is utilized effectively. We have developed materials to use for the OLEDs and recently found RGB light emissive materials of fluorescence type that had longer lifetime and high efficiency. We report an outline about development status of our low molecule type organic electroluminescence materials idel^[○!R] in the this article and introduce the performance of three-component white devices used the latest materials.

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Present Status of Polymer-Based Light-Emitting Diode(<Special Issue>Field of Luminescent Materials Part 1 : Field of Various Solid Atate Luminescent Materials)

Shizuo Tokito

Article type: Article
2008 Volume 92 Issue 6 Pages 325-329
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.325

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To appreciate the present status of organic light-emitting diode (OLED) technology and its ongoing development issues, this article briefly discusses the basic structure and working mechanisms of OLEDs based on conjugated polymers, as well as recent improvements in emission efficiency and color-tuning. In addition, the application of the polymer- based OLED technology to flat-panel displays and solidstate lighting is reviewed.

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Feel the Fascination of Science and Mathematics : I Visited RiSuPia(Hint for Delightful Lighting)

Shinji Matsuda

Article type: Article
2008 Volume 92 Issue 6 Pages 330-332
Published: June 01, 2008
Released on J-STAGE: June 17, 2025

DOIhttps://ntrd-jsjc-gov-cn-s-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.92.330

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