No longer perfectly placed, we may as well pop the covers off the sensors for a closer look.

These twin sensor arrays sit at each of your temples, with the strobing IR depth sensor perched right in the middle.

AKM Semiconductor and Invensense (now TDK) motion sensors likely found at the top of the camera PCB.

A closer look at the nose-bridge depth sensor gives us the room-reading hardware in the form of:

IR sensing camera

IR dot projector

There's no need to set up receiver stations for this device—it does the projection and reading all on its own!