Journal of Light & Visual Environment
Online ISSN : 1349-8398
Print ISSN : 0387-8805
ISSN-L : 0387-8805
Papers
Development of High-bright and Pure-white LED Lamps
Kanji BANDOKensho SAKANOYasunobu NOGUCHIYoshinori SHIMIZU
Author information
JOURNAL FREE ACCESS

1998 Volume 22 Issue 1 Pages 1_2-1_5

Details
Abstract

High bright and white light emitting diodes(LEDs) were fabricated. White LEDs are the fourth color made for commercial use following blue, green and red. White LEDs typically have the efficacy of 10 lm/W and the color temperature of 3000K-10000K. This new technology was achieved by combining blue InGaN LED and YAG phosphor. Compared with incandescent lamps, advantages such as wide color variation, life beyond 10000hr, no burn-out, reduced sensitivity to variation and little heat generation are expected.

Content from these authors
© 1998 The Illuminating Engineering Institute of Japan
Next article
feedback
Top