Accession Number:
ADP011311
Title:
Characteristics of High-Efficient InGaN-Based White LED Lighting
Descriptive Note:
Corporate Author:
YAMAGUCHI UNIV (JAPAN) DEPT OF ELECTRICAL AND ELECTRONIC ENGINEERING
Personal Author(s):
Report Date:
2000-07-01
Pagination or Media Count:
7.0
Abstract:
The basic illumination characteristics of an efficient white LEDs lighting source, which is composed of cannon-ball type 10 cd-class InGaN-based white LEDs, are described. It is noted that the temperature and forward-bias current dependence under full wave rectification of AC 100 V gives a significant effect to both electroluminescence properties and luminous efficacy. We have obtained a maximum luminous intensity of 95000 cdm2 and a luminous efficacy of about 27 lnW at an electric power of 20 W at a constant current of 10 mA. The developed white LEDs lighting source indicates two injection electroluminescence peaks at 465 and 555 nm, which are originated from a blue LED and a YAGCe3 phosphor, respectively. The illuminance distribution of the LED lighting source was analyzed using our multi sources of LED light theory. We have performed the design of a street lighting as the practical application using the 700 LEDs array lighting source.
Descriptors:
Subject Categories:
- Electrical and Electronic Equipment
- Optics