Method for optimizing an optical lens equipment for a wearer

Patent metadata

Field	Value
Publication number	US-10690945-B2
Application number	US-201515119649-A
Country	US
Kind code	B2
Filing date	Feb 17, 2015
Priority date	Feb 18, 2014
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

Method for optimizing an optical lens equipment for a wearer Method for optimizing an optical lens equipment for a wearer, the method comprising:—an eye tracking device providing step, during which a spectacle frame mounted eye tracking device is provided to the wearer, —a wearer parameter monitoring step, during which at least one parameter relating to the eyes of the wearer is monitored using the eye tracking device and—an optimization step during which the optical lens equipment is optimized based at least partly on the base of the monitoring of the at least one parameter during the wearer parameter monitoring step.

First claim

The invention claimed is:

1. A method for optimizing optical lens equipment for a wearer, the method comprising:
an eye tracking device providing step, during which a spectacle frame mounted eye tracking device is provided to the wearer, the eye tracking device including at least one pair of electrodes configured to measure the electrical potential on the skin near the eye of the wearer, and associated processing circuitry configured to detect blinks, saccades and/or eye movements;
a wearer parameter monitoring step, during which at least one parameter relating to eyes of the wearer is monitored using the eye tracking device, the at least one wearer parameter monitored during the monitoring step being selected from a list consisting of blinking frequency and speed of the eye movement; and
an optimization step, during which the optical lens equipment is optimized based at least partly on a basis of monitoring of the at least one parameter during the wearer parameter monitoring step, wherein
when the at least one wearer parameter monitored during the monitoring step comprises speed of the eye movement, then the at least one wearer parameter is used to determine a visual behavior of the wearer and a visual strength or fatigue of the wearer, and wherein during the optimization step, the optical lens equipment is optimized based on the visual behavior of the wearer and the visual strength or fatigue of the wearer, and
wherein the optical lens equipment is spectacles having prescription ophthalmic lenses.

2. The method according to claim 1 , further comprising:
a visual environment data providing step, during which visual environment data indicative of a visual environment of the wearer is provided; and
optimizing the optical lens equipment based on at least partly on the visual environment data during the optimization step.

3. The method according to claim 1 , comprising a wearer activity data providing step during which wearer activity data indicative of activity of the wearer is provided, and during the optimization step the optical lens equipment is optimized based at least partly on the wearer activity data.

4. The method according to claim 3 , further comprising monitoring at least one of the visual environment of the wearer and in a synchronized manner with the wearer parameter so as to link the wearer parameter with at least one of the visual environment of the wearer.

5. The method according to claim 4 , further comprising a head movement monitoring step during which head movement of the wearer is monitored in a synchronized manner with the wearer parameter and at least one of the visual environment of the wearer and so as to link eye-head coordination of the wearer with at least one of the visual environment of the wearer.

6. The method according to claim 1 , further comprising optimizing an optical function of the optical lens equipment during the optimization step.

7. The method according to claim 1 , further comprising selecting, during the optimization step, a specific optical lens from a list of optical lenses on the base of the monitoring of the at least one parameter.

8. The method according to claim 1 , further comprising optimizing a position of an optical lens in the optical lens equipment during the optimization step.

9. The method according to claim 1 , further comprising adapting the eye tracking device to determine a gazing direction or a viewing distance of the wearer.

10. The method according to claim 1 , further comprises further comprising a display step, during which information relating to the at least one parameter monitored during the monitoring step is displayed to the wearer.

11. The method according to claim 1 , wherein the eye tracking device further comprises at least one of an accelerometer, and a camera configured to take pictures of at least one of an environment, a light sensor, and a gyroscope sensor.

12. The method according to claim 1 , further comprising performing the monitoring step while having the wearer practice specific activities in a natural environment.

13. The method according to claim 1 , further comprising monitoring at least one of an amplitude, a variation over time, and a distribution of the at least one parameter during the monitoring step.

14. The method according to claim 1 , wherein at least one additional parameter monitored during the monitoring step is selected from the group consisting of:
eye gazing direction,
pupil diameter,
pupil shape,
pupil appearance,
phoria measurements,
blinking frequency,
gazing disparity between both eyes of the wearer,
convergence distance of the eyes of the wearer,
a level of illumination of at least one of the eyes of the wearer,
an intersection of visual ayes of the wearer with at least one surface of an optical lens,
general eye appearance, such as an iris, a cornea, a sclera appearance, and eye watering, and
speed of eye movement.

15. The method according to claim 3 , further comprising monitoring the activity of the wearer in a synchronized manner with the wearer parameter so as to link the wearer parameter with the activity of the wearer.

16. The method according to claim 1 , Wherein the at least one wearer parameter monitored during the monitoring step is the speed of the eye movement and the at least one wearer parameter is used to determine a visual behavior of the wearer and a visual fatigue of the wearer, and wherein during the optimization step, the optical lens equipment is optimized based on the visual behavior of the wearer and the visual fatigue of the wearer.

17. The method according to claim 16 , further comprising instructing manufacture of new ophthalmic lenses for the spectacles based on the visual behavior of the wearer and the visual fatigue of the wearer determined during the optimization.

18. A method of manufacturing an ophthalmic lens for a wearer, the method comprising:
an optical function optimization step during which an optical function of the ophthalmic lens is optimized by:
providing a spectacle frame mounted eye tracking device to the wearer, the eye tracking device including at least one pair of electrodes configured to measure the electrical potential on the skin near the eye of the wearer, and associated processing circuitry configured to detect blinks, saccades and/or eye movements;
monitoring at least one parameter relating to eyes of the wearer using the eye tracking device, the at least one wearer parameter monitored being selected from a list consisting of: blinking frequency and speed of the eye movement; and
optimizing the ophthalmic lens by optimizing a size of an optical lens based at least partly on a base of the monitoring of the at least one parameter; and
a manufacturing step during which the ophthalmic lens is manufactured, wherein
when the at least one wearer parameter monitored during the monitoring comprises speed of the eye movement, then the at least one wearer parameter is used to determine a visual behavior of the wearer and a visual strength or fatigue of the wearer, and wherein during the optimizing, the optical lens equipment is optimized based on the visual behavior of the wearer and the visual strength or fatigue of the wearer, and
wherein the optical lens equipment is spectacles having prescription ophthalmic lenses.

19. A method of controlling an adjustable lens device comprising an adjustable lens, an optical function controller and an eye tracking device, the adjustable lens comprising an optical function, the adjustable lens extending between at least one

Assignees

• Essilor Int

Inventors

• Fayolle Romain
• Allione Pascal
• Chene Sylvain
• Tranvouez Delphine

Classifications

• G02C7/025 Primary

  considering parameters of the viewed object · CPC title

• G02C7/083

  Electrooptic lenses · CPC title

• G02B27/0172

  characterised by optical features · CPC title

• G02B2027/014

  comprising information/image processing systems · CPC title

• G02C7/063

  Shape of the progressive surface · CPC title