US 12,235,441 B2
Contact lens for automatically aiming in the direction of an eye of a person, associated detection system
Jean-Louis De Bougrenet, Guilers (FR); Vincent Nourrit, Brest (FR); Cyril Lahuec, Lampaul Plouarzel (FR); Fabrice Seguin, Morlaix (FR); Francesco Ferranti, Brest (FR); and Thierry Djenizian, Auriol (FR)
Assigned to INSTITUT MINES TELECOM, Palaiseau (FR)
Appl. No. 17/602,973
Filed by INSTITUT MINES TELECOM, Palaiseau (FR)
PCT Filed Apr. 15, 2020, PCT No. PCT/EP2020/060541
§ 371(c)(1), (2) Date Oct. 11, 2021,
PCT Pub. No. WO2020/212394, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 1903979 (FR), filed on Apr. 15, 2019.
Prior Publication US 2022/0197030 A1, Jun. 23, 2022
Int. Cl. G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02C 7/04 (2006.01)
CPC G02B 27/0093 (2013.01) [G02B 27/017 (2013.01); G02C 7/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An automatic system for detecting the direction of the gaze of a person comprising:
at least one contact lens, intended to be worn on the eye of a person, for automatically pointing the direction of the eye, comprising:
a membrane able to cover the pupil and the iris of the eye at least partially;
at least two light sources encapsulated in the membrane, each able to emit a light beam or cone the divergence of which is controlled with respect to the axis of the lens;
at least one interface for collecting and supplying electrical energy to the light sources, from outside the lens;
at least one electronic circuit able to activate the sources from the interface;
a support, intended to be positioned in a fixed manner with respect to the person's face;
at least one position-sensitive detector (PSD) or a camera, secured to the support, the one or more detectors or the camera being able to detect the position of the beams from the at least two light sources of the contact lens so as to extract therefrom the angle of deviation with respect to the normal of the gaze.