An "optical table" is to optical technologies as a solderless breadboard is to electronics.
Basically, it's a big, stable platform with lots of threaded holes of a standard size and pitch for attaching lasers, mirrors, etc. Most have some kind of pneumatic isolation or damping to keep vibrations from being transmitted from the floor. Things like interference phenomena are sensitive to displacements of a few nanometers, so you really don't want things like passing trucks to ruin your experiments!
Examples here: http://www.newport.com/Optical-Table-Selection-Guide/140219/...
But I mention the "they're trying to build like the equivalent of the early table-based Microsoft Surface (before that meant a tablet), but pseudo-holographic instead" idea just because it's so unbelievable to me that stand-alone goggles can possibly deliver what they're claiming.
If you read through the depths of Magic Leap's site combined with their patent applications, it becomes clear that they are trying to develop a set of goggles which combines some form of projection onto the retina [0] with some form of selective blocking [1] (to give contrast, and prevent the projected images from appearing as hazy mirages over the light otherwise reaching the retina).
Especially the blocking would be impossible to achieve with anything but goggles.
[0]: https://www.google.com/patents/US20140071539 [1]: https://www.google.com/patents/US20130128230
Still unclear. They do seem to imply they want it to be an unconstrained mobile AR device, but that is indeed ambitious enough to warrant skepticism. Walk-around tracking for home/anywhere is still an unsolved problem for Oculus, and overlay AR is at least several times more demanding.
That's actually how (kinda) Stephenson's VR system he describes in Snow Crash works.
This kind of gets away from many of the issues you have with the Oculus Rift where you have such a tiny window of time (20ms or so) to react to how the person is moving his head. You still have to change the image based on the user's position, but not as much on head rotation which is the really hard part. Just each eye's location in space matters.
Multiple users would likely require multiple projectors.
probably because they's explicitly what they've claimed they're working on in their recent funding announcement. The CEO described their product as a "lightweight wearable".
I think they're mostly in patent hell.
It would be interesting if this was progressing because some major patent roadblocks where about to expire.
I think that there's a presumption (that I've shared) that Magic Leap is trying to make AR goggles or glasses. But, as has been extensively commented upon in the past, that's just crazy. We're just barely at the point of doing semi-decent VR (Oculus Rift) and just barely at the point of doing semi-decent wearable heads-up displays (Google Glass). The idea that Magic Leap could in any foreseeable timeframe create a device that has all the virtues of the Rift + Glass + A huge dose of additional technology on top of both is just laughable.
But if they're trying for something much heavier-weight, like the ability to create convincing illusions not in the form-factor of "some goggles," but rather, "a specially prepared room and table," then that's maybe a little more realistic -- and of course less obviously revolutionary.