I believe it is the same technology used in this video.

http://www.youtube.com/watch?v=K3yqr...eature=related

In short, you need

1) a graphic card with multiple outputs
2) a big screen, curved or not
3) a software to adjust the pixels intensity at the overlapped screen areas. may need to warp the image if screen geometry is not flat
4) a camera to calibrate the system to achieve the needs of step 3
5) ofc projectors, preferably the newer ones with longer life span

If u can handle step 3 and 4, which can be purchased off-the-shelf, u can probably DIY a huge video wall, or huge screen solution using rear projection. Definitely an interesting project.

For OP's system, the system depth is only 60cm.

Right, OP?