The ZED mini device is actually two cameras 65 mm (2.56 inches) apart, designed to mimic the human eyes. They can sense user position and depth, so digital graphics can be programmed to interact with real world objects in a way that looks and feels genuine, complete with realistic lighting.
All of this stereoscopic video and depth information is fed through a USB-C connection into the Vive or Rift, at a 720p resolution running at 60 frames-per-second. That's not the maximum resolution these headsets are capable of when they're rendering VR worlds, but if apps don't need the high FPS rate then the resolution can be upped to the full 2k.
The ZED mini can be preordered now for US$449 and ships on December 18. You can a taste of what's on offer in the video below.
See the full story here: https://newatlas.com/zed-mini-ar-camera/52464/