Patent attributes
Embodiments relate to a head-mounted display including an eye tracking system. The eye tracking system includes a source assembly, a camera, and a controller. In some embodiments, the source assembly is a plurality of sources and are positioned to illuminate at least a peripheral area of a cornea of an eye. In some embodiments, the sources are masked to be a particular shape. The peripheral region is a location on the eye where the cornea transitions to the sclera. In some embodiments, the camera can detect a polarization of the reflected light, and uses polarization to disambiguate possible reflection locations. Similarly, time of flight may also be used to disambiguate potential reflection locations. The controller uses information from the detector to track positions of the user's eyes.
