If you're interested in 3D-without-glasses ("autostereo"), then you might like this video. It explains the principles of a system that can make 3-D images as small as a mobile device, or as large as a desktop display (or larger).
As researchers have long recognized, it's difficult to make a 3-D display that's inexpensive, has a wide horizontal field of view, has a >XGA per-view resolution, and offers 100 or more views. (Even getting 12 views had been tricky.) The architecture in this video meets all of these requirements.
We built a prototype of this at Actuality Systems. Now Optics for Hire owns the patent application. You can see the application here, and a full list of OFH's 3-D IP here.