30 June 2000 Characteristics of high-efficiency InGaN-based white LED lighting
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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 cd/m2 and a luminous efficacy of about 27 lm/W 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 YAG:Ce3+ 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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuji Uchida, Yuji Uchida, Tatsumi Setomoto, Tatsumi Setomoto, Tsunemasa Taguchi, Tsunemasa Taguchi, Yoshinori Nakagawa, Yoshinori Nakagawa, Kazuto Miyazaki, Kazuto Miyazaki, } "Characteristics of high-efficiency InGaN-based white LED lighting", Proc. SPIE 4079, Display Technologies III, (30 June 2000); doi: 10.1117/12.389397; https://doi.org/10.1117/12.389397


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