Inexpensive interferometric eye tracking system
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United States of America Patent
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Jun 10, 1997
Grant Date -
N/A
app pub date -
Jun 25, 1996
filing date -
Jun 25, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An inexpensive eye tracking system requires no head gear. The eye tracking system uses the interference fringes between the corneal glint and the 'red eye' retinal reflection to obtain an angularly resolved, background-immune eye point signal for use as a pointing device for personal computers. Tunable (eye safe) diode laser spectroscopy is used to measure the period and amplitude of the Fabry-Perot fringes caused by the interference between the corneal glint and the 'red' reflection form the retina.
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