Patent ID: 11917126
Assignee: TOBII AB
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A wearable augmented reality or virtual reality headset comprising:
an eye tracking device comprising:
an image sensor; and
a lens
a memory device; and

one or more processors configured to at least:
 set a default cornea center-to-lens center distance value and store said value in the memory;
load from the memory device a distortion correction model including the cornea center-to-lens center distance value;
receive an image of an eye captured using the image sensor;
analyse the captured image to determine distortion;
update the cornea center-to-lens center distance value using said determined distortion; and
update the memory distortion model using said updated cornea center-to-lens center distance value.