US 11,917,126 B2
Systems and methods for eye tracking in virtual reality and augmented reality applications
Jonas Andersson, Danderyd (SE); Anders Clausen, Danderyd (SE); Richard Hainzl, Danderyd (SE); Anders Kingbäck, Danderyd (SE); Simon Olin, Danderyd (SE); Mark Ryan, Danderyd (SE); Daniel Tornéus, Danderyd (SE); Björn Nutti, Danderyd (SE); Torbjörn Sundberg, Danderyd (SE); Catarina Tidbeck, Danderyd (SE); Ralf Biedert, Danderyd (SE); Niklas Blomqvist, Danderyd (SE); Dennis Rådell, Danderyd (SE); and Robin Thunström, Danderyd (SE)
Assigned to Tobii AB, Danderyd (SE)
Filed by Tobii AB, Danderyd (SE)
Filed on Feb. 24, 2023, as Appl. No. 18/174,079.
Application 18/174,079 is a continuation of application No. 16/970,549, granted, now 11,622,103, previously published as PCT/EP2019/053853, filed on Feb. 15, 2019.
Claims priority of provisional application 62/631,196, filed on Feb. 15, 2018.
Prior Publication US 2023/0217008 A1, Jul. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 5/00 (2006.01); H04N 17/00 (2006.01); G06F 3/01 (2006.01); G06T 7/80 (2017.01); G02B 27/00 (2006.01); G06T 7/50 (2017.01); H04N 23/56 (2023.01); G02B 27/01 (2006.01)
CPC H04N 17/002 (2013.01) [G02B 27/0093 (2013.01); G06F 3/012 (2013.01); G06F 3/013 (2013.01); G06T 7/50 (2017.01); G06T 7/80 (2017.01); H04N 23/56 (2023.01); G02B 2027/0138 (2013.01); G06T 2207/30168 (2013.01); G06T 2207/30204 (2013.01); G06T 2207/30244 (2013.01)] 9 Claims
OG exemplary drawing
 
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.