Automated contact lens design through image capture of an eye wearing a reference contact lens

Patent metadata

Field	Value
Publication number	US-11762219-B2
Application number	US-202117223966-A
Country	US
Kind code	B2
Filing date	Apr 6, 2021
Priority date	Apr 6, 2021
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A method comprises: disposing a measurement contact lens upon an eye of a user; capturing at least one image of the eye and the measurement contact lens with an image sensor while the measurement contact lens is on the eye of the user and the eye is illuminated; processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye; processing the at least one image to obtain an angular orientation of the measurement contact lens on the cornea of the eye; and determining, based on the centration and angular orientation of the measurement contact lens on the cornea of the eye, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

First claim

What is claimed is:

1. A method comprising:
disposing a measurement contact lens upon an eye of a user;
disposing measurement eyewear on the face of the user, the measurement eyewear comprising a light source and an image sensor;
capturing at least one image of the eye and the measurement contact lens with the image sensor while the measurement eyewear is disposed on the face of the user, the measurement contact lens is on the eye of the user, and the eye is illuminated by the light source;
processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye;
processing the at least one image to obtain an angular orientation of the measurement contact lens on the cornea of the eye; and
determining, based on the centration and angular orientation of the measurement contact lens on the cornea of the eye, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

2. The method of claim 1 , wherein:
the measurement contact lens comprises an orientation mark; and
capturing the at least one image of the eye of the user with an image sensor while the eye is illuminated comprises capturing at least one image of the orientation mark, the pupil of the eye, and the lid of the eye.

3. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angle and a distance for displacing display path optics in the first or second contact lens based on the centration and/or angular orientation of the measurement contact lens on the cornea of the eye.

4. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angular position of a light polarizing filter and/or microlens of the first or second contact lens relative to a non-rotation design feature in the first or second contact lens based on the angular orientation of the measurement contact lens on the cornea of the eye.

5. The method of claim 1 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angular orientation and/or the vertical position of non-rotational features of the first or second contact lens based on the angular orientation of the measurement contact lens on the cornea of the eye, a position of the lids of the eye, and an aperture height between the lids.

6. The method of claim 1 , wherein processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye comprises:
determining the center of the contact lens based on points falling on the outer edge of the measurement contact lens or on points on the orientation mark; and
determining the center of the pupil based on points falling on the edge of the pupil.

7. A non-transitory machine-readable storage medium encoded with instructions executable by one or more hardware processors of a computing component, the machine-readable storage medium comprising instructions to cause the one or more hardware processors to perform operations comprising:
receiving at least one image of an eye of a user captured by an image sensor of a measurement eyewear disposed on the face of the user while a measurement contact lens is on the eye and the eye is illuminated by a light source of the measurement eyewear;
processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye;
processing the at least one image to obtain an angular orientation of the measurement contact lens on the cornea of the eye; and
determining, based on the centration and angular orientation of the measurement contact lens on the cornea of the eye, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

8. The non-transitory machine-readable storage medium of claim 7 , wherein:
the measurement contact lens comprises an orientation mark; and
the at least one image includes an image of the orientation mark, the pupil of the eye, and the lid of the eye.

9. The non-transitory machine-readable storage medium of claim 7 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angle and a distance for displacing display path optics in the first or second contact lens based on the centration of the measurement contact lens on the cornea of the eye.

10. The non-transitory machine-readable storage medium of claim 7 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angular position of a light polarizing filter and/or microlens of the first or second contact lens relative to a non-rotation design feature in the first or second contact lens based on the angular orientation of the measurement contact lens on the cornea of the eye.

11. The non-transitory machine-readable storage medium of claim 7 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angular orientation and/or the vertical position of non-rotational features of the first or second contact lens based on the angular orientation of the measurement contact lens on the cornea of the eye, a position of the lids of the eye, and an aperture height between the lids.

12. The non-transitory machine-readable storage medium of claim 7 , wherein processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye comprises:
determining the center of the contact lens based on points falling on the outer edge of the measurement contact lens or on points on the orientation mark; and
determining the center of the pupil based on points falling on the edge of the pupil.

13. A system, comprising:
measurement eyewear comprising a light source and an image sensor;
a hardware processor; and
a non-transitory machine-readable storage medium encoded with instructions executable by the hardware processor to perform operations comprising:
receiving at least one image of an eye of a user captured by the image sensor while the measurement eyewear is disposed on the face of the user, a measurement contact lens is on the eye, and the eye is illuminated by the light source;
processing the at least one image to obtain a centration of the measurement contact lens on the cornea of the eye;
processing the at least one image to obtain an angular orientation of the measurement contact lens on the cornea of the eye; and
determining, based on the centration and angular orientation of the measurement contact lens on the cornea of the eye, at least one parameter of a first contact lens to be worn on the eye with display eyewear or a second contact lens to be worn on the eye without the display eyewear.

14. The system of claim 13 , wherein:
the measurement contact lens comprises an orientation mark; and
the at least one image includes an image of the orientation mark, the pupil of the eye, and the lid of the eye.

15. The system of claim 13 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an angle and a distance for displacing display path optics in the first or second contact lens based on the centration of the measurement contact lens on the cornea of the eye.

16. The system of claim 13 , wherein determining at least one parameter of the first or second contact lens comprises:
determining an ang

Assignees

• Innovega Inc

Inventors

• Legerton Jerome
• Marsh Jay

Classifications

• A61B3/111

  for measuring interpupillary distance · CPC title

• A61B3/113

  for determining or recording eye movement · CPC title

• A61B3/0025

  characterised by electronic signal processing, e.g. eye models · CPC title

• G02C7/047 Primary

  Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae · CPC title

• G02C7/049

  Contact lenses having special fitting or structural features achieved by special materials or material structures · CPC title