From: Design of a phosphor-converted LED based lighting system considering both the lighting and color uniformity
Structure
φcut
φc
ΔCCT (K)
2a (mm) × b (mm)
illumination uniformity
Developed
40°
620
40.00 × 18.51
90%
50°
45°
246
40.00 × 17.63
88%
Single Lens
598
40.00 × 16.78
85%
–
5628
84%