Safe eye detection
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United States of America Patent
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Sep 30, 2008
Grant Date -
Aug 21, 2008
app pub date -
Mar 31, 2005
filing date -
Mar 31, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An eye detection system for safe detection of the eye positions of a subject estimates the distance from the eye detection system to the subject and reduces the power level of at least one primary light source of the eye detection system if the subject is too close to the eye detection system. If the subject is not too close to the eye detection system, the power level of the at least one primary light source of the eye detection system is increased, provided the power level is below a predetermined maximum power level. Primary light from the at least one primary light source reflected from the subject is sensed by an imager to obtain one or more images, from which the eye positions of the subject are estimated.
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