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US 11,698,527 B2Granted
Capacitance-based eye tracker
AssigneeUniversity of Washington
InventorsJae-Hyun Chung, Vigneshwar Sakthivelpathi, Sang-gyeun Ahn
Life of this patent
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Abstract
An eye-tracking system, including at least one vertical capacitance sensor, configured to measure the vertical position of a cornea of a user's eye by sensing a position of an eyelid of the user; and at least one horizontal capacitance sensor, configured to measure the horizontal position of the cornea of the user's eye by sensing a position of the user's eyeball.
Claims29
An eye-tracking system, comprising:
- at least one vertical capacitance sensor, configured to measure the vertical position of a cornea of a user's eye by sensing a position of an eyeball and an eyelid of the user;
- and
- at least one horizontal capacitance sensor, configured to measure the horizontal position of the cornea of the user's eye by sensing a position of the user's eyeball,
- wherein the horizontal and vertical sensors are rotated up to 45 degrees clockwise to increase sensitivity to eye movement.
1 more element
An eye-tracking system comprised of:
- an article comprising a left side and a right side;
- a first vertical sensor attached to the right side of the article;
- a second vertical sensor attached to the left side of the article;
- a first horizontal sensor attached to the right side of the article;
- and
- a second horizontal sensor attached to the left side of the article;
- wherein the first vertical sensor and the first horizontal sensor are configured to measure a vertical position and a horizontal position, respectively, of a cornea of a user's right eye by sensing a position of a right eyelid of the user and the user's right eyeball,
- wherein the horizontal and vertical sensors are rotated up to 45 degrees clockwise to increase sensitivity to eye movement, and
- wherein the second vertical sensor and the second horizontal sensor are configured to measure a vertical position and a horizontal position, respectively, of a cornea of a user's left eye by sensing a position of a left eyelid of the user and the user's left eyeball, so that both a user's right eye movements and left eye movements are sensed simultaneously.
6 more elements
Dependencies are inferred from the claim text.