Wierd IMO. And projectors of that quality (descent) and size (tiny) will likely never become reality, at least not unless some new tech is invented or something that we currently have no concept of at all. And then 3D projection into the air is just, well, no. What is the light supposed to be reflecting off of?
They might not be the best quality picture, but they have the size down, just need to figure out the quality.