Photography – With viewfinder – Selective or adjustable viewfinder field
Patent
1999-07-30
2000-10-31
Perkey, W. B.
Photography
With viewfinder
Selective or adjustable viewfinder field
G03B 1310
Patent
active
061415030
ABSTRACT:
A visual field of finder change-over apparatus for changing over a size and shape of a visual field of finder of a camera in a plurality of stages, includes a pair of first visual-field frame members which are movable relative to the visual field of finder in two opposite directions and each of which has an approximately arc-shaped cam slot, a pair of second visual-field frame members which are movable relative to the visual field of finder, and in further two opposite directions, the further two opposite directions crossing the two opposite directions, and each of which has an approximate arc-shaped cam slot, and a rotation member which is rotatable and has a plurality of pins fitted in the cam slots of the first and second visual-field frame members, the rotation member selectively moving the first and second visual-field frame members by a movement of the moving pins when the rotation member rotates, wherein at least one of the pairs of the first and second visual-field frame members is moved in accordance with the rotation of the rotation member.
REFERENCES:
patent: 5592252 (1997-01-01), Kobayashi et al.
patent: 5623324 (1997-04-01), Dassero et al.
patent: 5732298 (1998-03-01), Nishizawa et al.
patent: 5970267 (1999-10-01), Inazuka et al.
Koide Wataru
Sugita Yukihiko
Takagi Tetsuya
Olympus Optical Co,. Ltd.
Perkey W. B.
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