Viewfinder system and optical apparatus having the same

Details Viewfinder system and optical apparatus having the same Viewfinder system and optical apparatus having the same

1997-03-21

2000-08-01

Perkey, W. B.

Photography

Eye tracking

G03B 1700

Patent

active

060978929

ABSTRACT:
A viewfinder system includes an eyepiece lens having at least one aspheric surface, and a visual line detecting part. The visual line detecting part includes an illuminating part for illuminating an eyeball of a viewer, a visual line lens arranged to form an eyeball image by using light reflected from the eyeball of the viewer, the visual line lens having at least one aspheric surface, and a detection part on which the eyeball image is formed. The visual line detecting part is arranged to detect a visual line of the viewer by using information outputted from the detection part.

REFERENCES:
patent: 5581323 (1996-12-01), Suzuki et al.
patent: 5583606 (1996-12-01), Shindo et al.
patent: 5606390 (1997-02-01), Arai et al.
patent: 5610681 (1997-03-01), Nagano et al.
patent: 5689736 (1997-11-01), Okuyama et al.
patent: 5696998 (1997-12-01), Yamada et al.

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