US 12,228,738 B2
Eye imaging with an off-axis imager
Michael Anthony Klug, Austin, TX (US); and Adrian Kaehler, Plantation, FL (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Jul. 18, 2023, as Appl. No. 18/354,575.
Application 16/584,554 is a division of application No. 15/271,802, filed on Sep. 21, 2016, granted, now 10,466,478, issued on Nov. 5, 2019.
Application 18/354,575 is a continuation of application No. 17/326,920, filed on May 21, 2021, granted, now 11,747,624.
Application 17/326,920 is a continuation of application No. 16/584,554, filed on Sep. 26, 2019, granted, now 11,022,801, issued on Jun. 1, 2021.
Claims priority of provisional application 62/222,671, filed on Sep. 23, 2015.
Prior Publication US 2024/0036326 A1, Feb. 1, 2024
Int. Cl. G02B 27/01 (2006.01); A61B 3/10 (2006.01); A61B 3/113 (2006.01); A61B 3/12 (2006.01); A61B 3/14 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 5/16 (2006.01); G02B 27/00 (2006.01); A61B 5/117 (2016.01)
CPC G02B 27/0172 (2013.01) [A61B 3/10 (2013.01); A61B 3/113 (2013.01); A61B 3/12 (2013.01); A61B 3/14 (2013.01); A61B 5/1122 (2013.01); A61B 5/163 (2017.08); A61B 5/742 (2013.01); G02B 27/0093 (2013.01); A61B 5/117 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0178 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An imaging system comprising:
an optical element positioned in front of an eye of a user;
a reflective element that reflects light in a first wavelength range; and
a forward-facing imager sensitive to a subset of light of the first wavelength range, wherein the forward-facing imager is oriented to capture the subset of light of the first wavelength range reflected by the reflective element, wherein the forward-facing imager is on a same side of the optical element as an eye of a user;
a virtual backward-facing imager formed by infrared light propagated from the eye of the user through the optical element corresponding to the infrared light reflected by the reflective element and captured by the forward-facing imager; and
wherein the virtual backward-facing imager and the forward-facing imager are positioned on opposite sides of the optical element and the virtual backward-facing imager and the forward-facing imager are equidistant from the optical element.