A Study of the Light Source Device Composed of Blue LEDs and YAG Phosphor by Using Optical Simulation

Kenichi Yamada, Yasuo Imai, Kenichi Ishii
2002 Journal of the Illuminating Engineering Institute of Japan  
The optical structures and luminous properties of the light source device composed of blue LEDs and YAG phosphor were examined by using optical simulation. Results showed that the reflection-type light source device had high luminous flux over 1.5 times more than the transmission-type light source device. This suggests that using light reflected from phosphor is an effective way to obtain high output from light sources composed of LEDs and phosphor.
doi:10.2150/jieij1980.86.5_308 fatcat:efc5yhvcdrdnzaym4hbb7ifg64