Inexpensive interferometric eye tracking system

Details Inexpensive interferometric eye tracking system Inexpensive interferometric eye tracking system

1996-06-25

1997-06-10

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356359, 356345, 356349, G01B 902

Patent

active

056381760

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.

REFERENCES:
patent: 4660980 (1987-04-01), Takabayashi et al.
patent: 5513533 (1996-05-01), Wheeler et al.
patent: 5521657 (1996-05-01), Klopotek
patent: 5579112 (1996-11-01), Sugiyama et al.

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