If they are building a new kind of 3d display then this may explain why they need a lot of money. They cannot just buy an already massmanufactured display like Oculus is buying it from Samsung.
I wonder if, instead of the micro lens array mentioned in other links, they have a fiber with a tip acting as a lens, such that the larger scene is transmitted to each "pixel" in the raster. Each raster point would get a slightly different scene rendered to it, be displayed by the fiber tip, and thus produce the array of images necessary for multi focal viewing. I don't know enough about optics to know if this is possible, but it sure would be cool!
The fiber scanned display appears to be a strand of fiber, vibrated in one or two dimensions by a pizo-electric. The "pixels" are formed by the end of the fiber strand.
Ultra-High Resolution Scanning Fiber Display for HMDs
http://www.sbir.gov/sbirsearch/detail/415788
...Magic Leap is working to commercialize low cost, compact, high field of view, high resolution consumer wearable display systems.
A quick search for "Fiber Scanned Display" explains the technology:
http://www.hitl.washington.edu/projects/mfabfiber/
If they are building a new kind of 3d display then this may explain why they need a lot of money. They cannot just buy an already massmanufactured display like Oculus is buying it from Samsung.