| Presentation | 2005/5/19 Recent progress in white LED lighting technologies Tsunemasa TAGUCHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The near UV white LED system linked with semiconductor technologies on GaN LED and compound phosphors for the general lighting applications has for the first time been proposed in "The light for the 21st century" METI national (Akari) project. We have demonstrated high-efficient near UV LED having external quantum efficiencies more than 43% around an emission wavelength of 400nm. Basic illumination properties, and applications of the high luminous efficacy (>40lm/W) and the high general color rendering index (R_a>90) white LED sources are described. The near UV white LED technologies in conjunction with phosphor blends can offer superior color uniformity, high R_a and the excellent light quality, and the second phase programme has been performed in the MEXT national project "White LEDs for medical applications" from 2004 to 2009 for 5 years. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | White light / Light emitting diode (LED) / High color / High color rendering |
| Paper # | ED2005-27,CPM2005-19,SDM2005-27 |
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| Conference Information | |
| Committee | CPM |
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| Conference Date | 2005/5/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Component Parts and Materials (CPM) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Recent progress in white LED lighting technologies |
| Sub Title (in English) | |
| Keyword(1) | White light |
| Keyword(2) | Light emitting diode (LED) |
| Keyword(3) | High color |
| Keyword(4) | High color rendering |
| 1st Author's Name | Tsunemasa TAGUCHI |
| 1st Author's Affiliation | Faculty of Engineering, Yamaguchi University() |
| Date | 2005/5/19 |
| Paper # | ED2005-27,CPM2005-19,SDM2005-27 |
| Volume (vol) | vol.105 |
| Number (no) | 91 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |