| CPC H04N 23/56 (2023.01) [G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); G06F 3/013 (2013.01); G06T 7/246 (2017.01); G06T 7/50 (2017.01); G06T 7/73 (2017.01); G02B 2027/0138 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/30201 (2013.01)] | 17 Claims |
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1. An augmented reality device comprising:
a variable focus lens;
an eye tracking sensor comprising an infrared (IR) scanner and an IR detector, and
at least one processor configured to:
control the IR scanner of the eye tracking sensor to emit IR light to an eye of an user,
detect the IR light reflected by the eye of the user by using the IR detector,
detect a plurality of glint feature points from the reflected IR light,
obtain distances between the plurality of detected glint feature points,
determine eye relief, which is a distance between the eye of the user and the variable focus lens, based on the obtained distances between the plurality of glint feature points,
obtain information with respect to a gaze point at which gaze direction of a left eye of the user and gaze direction of a right eye of the user converge, and an interpupillary distance which is a distance between a pupil of the left eye and a pupil of the right eye, based on the plurality of glint feature points, and
determine a position of a focal region of the variable focus lens based on the information with respect to the eye relief, the gaze point, and the interpupillary distance.
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