Hi Karl, Moe, Gunter,
Yes I would say get a DLP projector
I currently have LCD projector Panasonic pt-ae500u 1280x720, when it was brand new the specs were 850ansi Lumens, contrast 1300:1 (probably half that now its 5yrs old which is the problem with my extra lines, i explain later)
I'm looking at getting a new one
On another post someone pointed out that most regular size projectors don't focus till about 1m (41") creating a large pattern. I have what is called "close up filters" from photography lenses its like a poor mans macro lens adapter. They come in different powers (+1,+2,+4)
It basically shortens the focus on camera lens, but i put it on my projecter! same effect here are the results, the red line marks the closest sharp focus with denoted filter:
EDIT: Rough conversion 41in=104cm, 20.5in=52cm, 12.75in=32cm, 9in=23cm
I originally got them as a 4 set (+1,+2,+4,+10macro) the whole set cost $20. I think a +1 is all you need really, because the drawback of these is that it also shortens the distance which is in sharp focus so you can't have deep object. But usually small object is not deep.
You can see below I am projecting pattern #06 the first of the Grayscale I chose it because it has sharp Black and White lines to see sharp focus on the mouse but then just behind it the white background is out of focus. This is with +4 close up filter, projected pattern is not cropped thats the full projected 1280x720 pattern!
@ Moe- Thanks for the info i have been playing with MinLineIntegral # it has helped a lot!
@ Gunter- I figured out what the multiple or nervous line was from, it's my faulty projector! i'll post later, just a few more tests!