Here's a Kickstarter for a new system called castAR described as "bridging the physical world with the virtual worlds; 3D holographic like projections in AR, fully immersive environments in VR" (thanks Eurogamer). Developer Technical Illusions includes Jeri Ellsworth, who worked on Steam hardware betas before being let go by Valve earlier this year, and they are seeking $400K to pursue developing this eyewear:

castAR's projected augmented reality system is comprised of two main components: a pair of glasses and a surface. The frames of the glasses contain two micro-projectors—one for each eye. Each projector casts a perspective view of a stereoscopic 3D image onto the surface. Your eyes focus on this projected image at a very natural and comfortable viewing distance. A tiny camera in-between the projectors scans for infrared identification markers placed on the surface. The camera uses these markers to precisely track your head position and orientation in the physical world, enabling the software to accurately adjust how the holographic scene should appear to you. The glasses get their video signal through an HDMI connection. The camera is connected via a USB port on the PC. We are still experimenting with communication options on mobile devices.