Optical apparatus equipped with sight line detector

Details Optical apparatus equipped with sight line detector Optical apparatus equipped with sight line detector

1995-04-19

1996-11-26

Perkey, W. B.

Photography

Eye tracking

G03B 1302

Patent

active

055790798

ABSTRACT:
An apparatus for detecting information of an eye of a person includes a light illuminating unit for illuminating the eye of the person with light from a plurality of different positions, a photoelectrical changing device for detecting light reflected from the eye, and a controlling device for controlling the light illuminating unit in accordance with whether or not the person is wearing spectacles.

REFERENCES:
patent: 3864030 (1975-02-01), Cornsweet
patent: 4950069 (1990-08-01), Hutchinson
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5182443 (1993-01-01), Suda et al.
patent: 5214466 (1993-05-01), Nagano et al.
patent: 5262807 (1993-11-01), Shindo

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