Other Parts Discussed in Thread: DLP660TE, DLP470TE
I have been using BenQ’s new W1700, which uses what I presume to be the DLP470TP DMD.
I know this uses four flashes, as it were, of 1920 x 1080 to deliver the required pixel count of UHD, and test images show that it does so very well. Thrilling.
The numbers are easy, but I can’t work out the geometry. There seem to be three possibilities:
1) The DMD delivers 1920 x 1080 to four entirely separate quarters of the screen. But this seems a big shift for the micromirrors to make, and there’s no evidence of any joins in the middle.
2) OR The pixels on the DMDs occupy only a quarter of the micromirror area, so they can be shifted half a mirror in each direction to deliver four adjacent pixels. Again easy to understand, though it would make the pixels very small – but perhaps that’s why the lumen output is limited to 1500?
3) OR Full-miiror-size pixels are used, and they then overlap when shifted. But this would seem to require image processing of each frame to be able to deliver UHD accurately, as is achieved. (This is currently our favourite, since this might then also explain the impossible-to-visualise geometry of the two-flash 0.67” DLP660TE.)
Can you enlighten us? It may be some cunning solution beyond our poor Australian brains.
