http://www.wired.com/gadgetlab/2014/01/oculus-rift
AMOLED screen, and marker tracking via a camera for positional tracking.
Unlike the two previous demos, however, it monitors the user’s head movements in real space, and it’s able to translate those movements into not just orientation changes — looking up, down, or behind you — but also as actual motion, which previously was possible only by using a game controller in conjunction with the Rift. It utilizes an “outside-in” system: an externally mounted camera tracks small LED lights on the prototype’s faceplate, adding three “degrees of freedom” (forward/backward, left/right, and up/down) to the Rift’s tracking ability. Up until now, developers and early Oculus adopters have only been able to accomplish this by taping a Razer Hydra motion controller to the side of their Rift headsets. Now, though, leaning down while playing the demo brings you closer to the tower-defense game, and lets you watch the armies you control firing turrets and launching minions. It’s the first look at an untethered VR experience.
“This is just a feature prototype,” Iribe says. “It’s not at all representative of the final consumer look and feel. Once we feel like something is good enough and we’re confident we’ll be able to ship it with the consumer product, we feel good about announcing it. We still may change how it’s done, but we feel great about the positional tracking system. It’s been a year in the works, we’ve tried multiple different approaches, and this delivered the experience we were looking for.”
Very curious about the camera. Article is light on specifics there.