Visual axis detecting apparatus

Details Visual axis detecting apparatus Visual axis detecting apparatus

1993-10-08

1995-03-28

Perkey, W. B.

G03B 1700, A61B 314

Patent

active

054021995

ABSTRACT:
This specification discloses a visual axis detecting apparatus provided with means for illuminating an observer's eyeball, first means for detecting the characteristic portion of the image of the observer's eyeball, second means for detecting the corneal reflected image by the illuminating means from the image of the observer's eyeball, means for selecting some corneal reflected image from among the corneal reflected images obtained by the second means, visual axis detecting means for detecting the observer's visual axis from the positional relation between the characteristic portion and the selected corneal reflected image, means for evaluating the state of the detected visual axis, and means for reselecting another corneal reflected image when it is evaluated by the evaluating means that the state of the visual axis is inappropriate.

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