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Consumer Sleep Technology
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Patent US10314530
Issued 2019-06-11
Electronic Ophthalmic Lens With Sleep Monitoring
An eyelid position sensor system and/or an eye movement sensor system for an ophthalmic lens having an electronic system is described herein for recording data associated with sleep of the wearer. The eyelid position sensor system is part of an electronic system incorporated into the ophthalmic lens. The electronic system in at least one embodiment includes a system controller and a data manager. In at least one embodiment, the eyelid position sensor system is utilized to determine eyelid position and the eye movement sensor system is utilized to determine eye position for the system controller to determine if the wearer is awake, asleep, or in REM sleep.
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- 1. A method for monitoring sleep with a powered contact lens, the method comprising:
disposing with the contact lens a processor, a clock, an eye movement sensor, and a computer readable storage medium having instructions stored therein, which when executed by the processor, cause the powered contact lens to perform the steps of: activating the powered contact lens; initiating the clock within the lens to track a passage of time; determining at a first eyelid sampling rate whether eyelid closure has occurred; when eyelid closure is detected,
sampling at least once the eye movement sensor within the contact lens, and
determining whether an eye movement threshold is exceeded, when the eye movement threshold is exceeded,
retrieving a time stamp from the clock;
storing the time stamp and a reading of the eye movement sensor; and
determining whether the reading is below the eye movement threshold, when the reading is below the eye movement threshold, storing an indication of an ending of a rapid eye movement (REM) and returning to determining whether eyelid closure has occurred.
- 12. A method for monitoring sleep with a powered contact lens, the method comprising:
disposing with the contact lens a processor, a clock, an eye movement sensor, and a computer readable storage medium having instructions stored therein, which when executed by the processor, cause the powered contact lens to perform the steps of: activating the powered contact lens; initiating the clock within the lens to track a passage of time; sampling at least once the eye movement sensor within the contact lens; and determining whether a first eye movement threshold is exceeded, when the first eye movement threshold is exceeded
retrieving a time stamp from the clock,
storing the time stamp accumulator reading and a reading of the eye movement sensor at least one of the accelerometer, and
determining whether the reading is below a second eye movement threshold, when the reading is below the second eye movement threshold, storing of an ending of a rapid eye movement (REM).
