This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DLP230NP: Heat loss calculation about Q_illumination

Part Number: DLP230NP

Hi Experts,

DLP230NP .23 1080P DMD datasheet (Rev. C) (

The above link is the datasheet. On the page 24,

"The conversion constant CL2W is based on the DMD micromirror array characteristics. It assumes a spectral efficiency of 300 lm/W for the projected light and illumination distribution of 83.7% on the DMD active array, and 16.3% on the DMD array border and window aperture. The conversion constant is calculated to be 0.00266 W/lm."
(1)  0.00266 is got from 1/300*83.7%?
(2)  based on above calculation method, all the light on DMD is absorbed and turn into heat? is it possible?
Thank you and best regards,