US 12,439,021 B2
Method and system for tracking eye movement in conjunction with a light scanning projector
Brian T. Schowengerdt, Seattle, WA (US); Mathew D. Watson, Bellevue, WA (US); Samuel Scott Frank, Shoreline, WA (US); and Charles David Melville, Camano Island, WA (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Oct. 24, 2023, as Appl. No. 18/383,417.
Application 18/383,417 is a continuation of application No. 17/306,732, filed on May 3, 2021, granted, now 11,838,496.
Application 17/306,732 is a continuation of application No. 16/892,184, filed on Jun. 3, 2020, granted, now 11,025,897, issued on Jun. 1, 2021.
Application 16/892,184 is a continuation of application No. 15/927,855, filed on Mar. 21, 2018, granted, now 10,715,794, issued on Jul. 14, 2020.
Claims priority of provisional application 62/474,497, filed on Mar. 21, 2017.
Prior Publication US 2024/0146897 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 13/383 (2018.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); H04N 9/31 (2006.01); H04N 13/344 (2018.01); G02C 11/00 (2006.01)
CPC H04N 13/383 (2018.05) [G02B 27/0081 (2013.01); G02B 27/0093 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); H04N 9/3129 (2013.01); H04N 13/344 (2018.05); G02B 2027/0123 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01); G02C 11/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An eye tracking system comprising:
a pair of glasses including a first frame and a second frame, wherein the first frame includes a first periphery portion adjacent a first temple of a user and the second frame includes a second periphery portion adjacent a second temple of the user;
a first projector coupled to the first frame of the pair of glasses;
a second projector coupled to the second frame of the pair of glasses, wherein the first projector and the second projector are operable to project a beam of light;
a first eyepiece mounted in the first frame and optically coupled to the first projector, wherein the first eyepiece is operable to direct at least a first portion of the beam of light from the first projector towards a first eye of the user;
a second eyepiece mounted in the second frame and optically coupled to the second projector, wherein the second eyepiece is operable to direct at least a second portion of the beam of light from the second projector towards a second eye of the user;
a first optical sensor coupled to the first periphery portion, the first optical sensor being operable to detect a first set of reflected signals off the first eye of the user from the first portion of the beam of light from the first projector;
a second optical sensor coupled to the second periphery portion, the second optical sensor being operable to detect a second set of reflected signals off the second eye of the user from the second portion of the beam of light from the second projector; and
a processor coupled to the first projector, the second projector, the first optical sensor, and the second optical sensor, wherein the processor is operable to determine an orientation of the first eye and the second eye based on the first set of reflected signals and the second set of reflected signals.