렌즈 형상이 YAG:Ce 형광체를 가진 백색 LED의 상관색온도에 미치는 영향

초록

For white LED packages with various dome lens shapes, correlated color temperatures (CCTs) were numerically evaluated with Monte Carlo ray-tracing simulation. It was found that the CCT of a white LED could be changed with its lens shape due to its inherent characteristics of a yellow phosphor-based white LED.