US 12,345,957 B2
Position variations of the lenses of an eyewear equipment
Gerhard Keller, Charenton-le-Pont (FR); Aurélie Le Cain, Charenton-le-Pont (FR); Konogan Baranton, Charenton-le-Pont (FR); and Sébastien Fricker, Charenton-le-Pont (FR)
Assigned to Essilor International, Charenton-le-pont (FR)
Appl. No. 17/780,847
Filed by ESSILOR INTERNATIONAL, Charenton-le-Pont (FR)
PCT Filed Jan. 4, 2021, PCT No. PCT/EP2021/050023
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/140070, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 20305014 (EP), filed on Jan. 10, 2020.
Prior Publication US 2023/0017742 A1, Jan. 19, 2023
Int. Cl. A61B 5/11 (2006.01); G02C 13/00 (2006.01)
CPC G02C 13/005 (2013.01) [A61B 5/1114 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for determining a position variation of an eyewear equipment worn by a wearer, the method comprising:
obtaining reference data representing a reference position of an eyewear equipment worn by the wearer, the eyewear equipment comprising at least one ophthalmic lens and a frame on which the at least one ophthalmic lens is mounted;
determining at least one reference position parameter indicative of a reference position of the eyewear equipment on the face of the wearer based on the reference data;
obtaining current data representing a current position of the eyewear equipment worn by the wearer;
determining at least one current position parameter indicative of a current position of the eyewear equipment in front of the eyes of the wearer based on the current data;
comparing the reference and current positions parameters to determine a position variation of the eyewear equipment worn by the wearer;
obtaining a threshold value associated with a level of discomfort of the wearer that is indicative of an index of visual performance of the wearer wearing the eyewear equipment in the current position;
comparing the threshold value and the position variation of the eyewear equipment worn by the wearer; and
sending a notification to the wearer when the position variation of the eyewear equipment worn by the wearer is higher than the threshold value.