Optical apparatus having visual point detection function

Details Optical apparatus having visual point detection function Optical apparatus having visual point detection function

1994-02-10

1997-01-28

Perkey, W. B.

Photography

Eye tracking

396296, 396121, G03B 1302, G03B 1318

Patent

active

055982484

ABSTRACT:
An optical apparatus detects a visual point of an observer, and reduces the visual axis detection error due to anatomical differences between people, such as the difference in the size of the eye. The apparatus sequentially displays a plurality of marks in a finder, and can calculate a precise visual point position on the basis of errors between the calculated visual point position and the marks when the observer sequentially watches these marks.

REFERENCES:
patent: 4836670 (1989-06-01), Hutchinson
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5428413 (1995-06-01), Shindo

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