The equations below are valid for a single chip DMD system with spectral efficiency of 300 lumens/Watt.
- QILLUMINATION = SL × CL2W
(W)
- SL = measured ANSI screen lumens (lm)
- CL2W = Conversion constant for screen
lumens to power absorbed on DMD (Watts/Lumen)
QELECTRICAL = 3.26 W
CL2W = 0.00266
W/lm
SL = 4000 lm
(measured)
TCERAMIC = 50.0 °C (measured)
QARRAY = 3.26 W +
(0.00266 W/lm × 4000 lm) = 13.9 W
TARRAY = 50.0 °C + (13.9
W × 0.90 °C/W) = 62.51 °C