US 12,484,775 B2
Eye sensing
Ioannis Papadopoulos, Lausanne (CH); and Volker Zagolla, Prilly (CH)
Assigned to ams International AG, Jona (CH)
Appl. No. 18/721,895
Filed by ams International AG, Jona (CH)
PCT Filed Dec. 20, 2022, PCT No. PCT/EP2022/086952
§ 371(c)(1), (2) Date Jun. 20, 2024,
PCT Pub. No. WO2023/118116, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 21386080 (EP), filed on Dec. 20, 2021.
Prior Publication US 2025/0057416 A1, Feb. 20, 2025
Int. Cl. G06F 3/01 (2006.01); A61B 3/113 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01)
CPC A61B 3/113 (2013.01) [G02B 27/0093 (2013.01); G02B 27/0172 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An eye sensing device for integrating in a frame for mounting to a user's head, the device comprising:
a laser output unit configured to provide a laser beam for illuminating a point on a cornea of an eye of the user when in use;
a receiver unit configured to receive reflections of the laser beam from the cornea and to provide a tracking signal usable for determining a distance or velocity of the eye, wherein the tracking signal comprises a relative change in a distance of the optical path of the reflected laser beam between a reflection point on the cornea and the receiver unit;
an optical element including a first layer and a second layer, the first layer configured to apply a first optical function to the laser beam for illuminating the eye and the second layer configured to apply a second optical function to the reflections of the laser beam; and
a processing unit configured to determine a position of the user's eye from the tracking signal.