US 12,393,271 B2
Enhanced eye tracking for augmented or virtual reality display systems
Nicolas Abele, Lausanne (CH); Eric Chevallaz, Pompaples (CH); Philippe De Gol, Muraz (CH); Julien Gamet, Saint Point Lac (FR); Gatien Cosendey, Belmont-sur-Lausanne (CH); and Stephan Arthur Gamper, Lausanne (CH)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Jun. 7, 2024, as Appl. No. 18/736,908.
Application 18/736,908 is a continuation of application No. 18/309,787, filed on Apr. 29, 2023, granted, now 12,039,099.
Application 18/309,787 is a continuation of application No. 17/102,326, filed on Nov. 23, 2020, granted, now 11,681,362, issued on Jun. 20, 2023.
Claims priority of provisional application 62/940,785, filed on Nov. 26, 2019.
Prior Publication US 2024/0319790 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/01 (2006.01); G02B 26/10 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/09 (2006.01)
CPC G06F 3/013 (2013.01) [G02B 26/101 (2013.01); G02B 27/0093 (2013.01); G02B 27/0172 (2013.01); G02B 27/0927 (2013.01); G02B 27/0944 (2013.01); G02B 27/0977 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display system configured to present virtual content to a user, the display system comprising:
a light source configured to output polychromatic light;
a movable reflector configured to reflect the outputted polychromatic light to the eye of the user according to a scan pattern, wherein the scan pattern comprises:
a first leg; and
a second leg, wherein the first leg extends vertically in a first direction and the second leg extends vertically in a second direction, wherein the first direction crosses the second direction, and wherein the first and second legs are formed by light of different wavelengths;
a plurality of light detectors configured to detect reflections of the light scanned across the eye; and
one or more processors configured to perform operations comprising:
causing adjustment of the orientation of the moveable reflector, such that the reflected light is scanned across the eye according to the scan pattern;
obtaining respective light intensity patterns detected by the light detectors, wherein a light intensity pattern represents light detector signals determined at different times during scanning of the reflected light across the eye; and
determining, based on the light intensity patterns, a speed of rotation of the eye.