Photography – Eye tracking
Patent
1995-03-31
1997-04-08
Metjahic, Safet
Photography
Eye tracking
396378, G03B 1302, G03B 1310
Patent
active
056192940
ABSTRACT:
A camera with a visual line position detection device capable of highly accurate determinations even when diopter adjustment is accomplished after initial completion of correction of the visual line position determining system. The camera includes a screen to form a subject image, a pentagonal prism provided inside the finder, a visual line position detection device equipped with a light emitting unit and a light receiving unit to detect the visual line position, and a diopter adjustment lens placed on the photographer's side of the pentagonal prism. The diopter adjustment lens is displaced after the correction of the visual line position detection device, and a correction coefficient needed to compute the visual line position on the screen obtained during the correction of the visual line position detection device is changed according to the displacement amount of the diopter adjustment lens.
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patent: 5036347 (1991-07-01), Tsunekawa et al.
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patent: 5335035 (1994-08-01), Maeda
patent: 5345287 (1994-09-01), Taguchi
patent: 5400101 (1995-03-01), Yoneyama et al.
Imafuji Kazuharu
Kosaka Toru
Ogawa Hidehiro
Sato Shigemasa
Dalakis Michael
Metjahic Safet
Nikon Corporation
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