Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-09-08
2000-07-11
Hofsass, Jeffrey A.
Communications: electrical
Condition responsive indicating system
Specific condition
340576, G08B 2300
Patent
active
060879416
ABSTRACT:
A warning system for warning a user that they have fallen or are about to fall asleep is disclosed. The system includes a contact lens having a detectable feature such as a holographic marking or other markings or indicia, metallic substances, color, or some microcircuit device, which will be worn by the user. The system also includes a detector or sensing device that can detect the presence of the contact lens when the eyelids of the person wearing the contact lens are open. The type of detector will vary depending upon the type of detectable feature incorporated into the contact lens. When the eyelids of the user become heavy or close, so as to cover a substantial portion of the detectable feature of the contact lens for a predetermined period and/or at a predetermined frequency, then the detector will generate a signal to thereby awaken the user.
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Hofsass Jeffrey A.
Litman Richard C.
Prev'l Daniel
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