Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1997-07-30
1999-01-19
Dang, Hung Xuan
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351205, 351211, A61B 310
Patent
active
058619402
ABSTRACT:
An eye detection system comprises a source, such as an infrared laser diodes for emitting a divergent beam of infrared radiation. A spatial light modulator is controlled so as to act as a deflector for scanning the beam. A detector detects radiation which is retro-reflected by the eye back along the path of the scanning beam. The deflection angle of the SLM and, for a position sensitive detector, the location of the center of illumination on the detector can be used to determine the angle to the center of the pupil of the eye. By subsequently detecting the angle to the glints corresponding to other sources and, the gaze position of the eye on a screen can be determined.
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T.E. Hutchinson et al., IEEE Transaction on System, Man, and Cybernetics, vol. 19, No. 6. pp. 1527-1533, 1989, "Human-Computer Interaction Using Eye-Gaze Input".
Y. Ebisawa, IMTC '94, pp. 963-966, 1994, "Improved Video-Based Eye-Gaze Detection Method".
K. P. White, Jr. et al., IEEE Transaction on Systems, Man, and Cybernetics, vol. 23, No. 4, pp. 1162-1168, 1993, "Spatially Dynamic Calibration Of An Eye-Tracking System".
A. Gee et al., IEEE 1994, pp. 1-6, 1994, "Non-Intrusive Gaze Tracking For Human-Computer Interaction".
Brown Robert George Watling
Mayhew Nicholas
Robinson Michael Geraint
Tombling Craig
Dang Hung Xuan
Sharp Kabushiki Kaisha
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