| General > General Technical Chat |
| Accelerating demise of Video Projector DLP dead pixels. |
| << < (4/4) |
| ebastler:
--- Quote from: tom66 on May 31, 2022, 08:50:59 am ---A true-RGB single-chip projector with an RGB LED is surely the better implementation, once the optics get there... --- End quote --- Well, it's the LEDs which would have to "get there", namely get to the required brightness but with a smaller étendue. Since the emission angle from the semiconductor substrate will always be large, the only way would be to make the substrate smaller, and hence the power density higher, I think. (Clever LED packages with built-in domes or other collimation means don't help, the "étendue is always conserved" rule applies to them too.) |
| mikeselectricstuff:
Might it also be something as simple as with age, airways get clogged so fan cooling becomes less efficient. the correlation with replaced bulbs could simply be related to run time |
| Navigation |
| Message Index |
| Previous page |