LED light source choices
1.1 RGBW 4-in-1 full color CREE MCE LED
The light source of the original design: CREE MCE
Color mixing effect
The circle intersecting the center of the 4 chips
1.2 RGB 3-in-1 CREE XPE2 LED
CREE XPE2 LED
Three ways of chips alignment. On the left, radius of circle intersecting the center of the three chips is the smallest, so the equivalent illuminant surface is the smallest, the color-mixing effect is the best. The analysis below is based on this chip alignment.
Color mixing effect improvement method(2) ：
By using multiple lenses, with a circular array of LEDs on PCB, result in a very good color mixing effect.
1.3 Light source with the best color mixing effect：High efficiency RGBW, 4-in-1 full color CREE XML LED