Photography – With viewfinder – Selective or adjustable viewfinder field
Patent
1997-01-16
1998-02-03
Perkey, W. B.
Photography
With viewfinder
Selective or adjustable viewfinder field
G03B 1312
Patent
active
057154902
ABSTRACT:
A camera is equipped with a finder having a field-of-view frame switching mechanism that is provided with, in addition to a stationary frame plate disposed in an optical path, two rotatable frame plates each of which moves in the optical pass to overlap with the stationary frame plate, to define three fields of different sizes. The stationary frame plate has a window of a standard size, one of the rotatable frame plates has a window of a classic size and the other has a window of panoramic size. Each of the fields of view is defined by a single frame plate. When the rotatable frame members are at their retracted positions, they substantially overlap with each other and are pushed by a spring in a direction to move in the optical path. Their movement is controlled by a cam member, which is moved in accordance with a user's operation to switch the size of a picture taken by the camera.
REFERENCES:
patent: 4357102 (1982-11-01), Taren
patent: 4652104 (1987-03-01), Harvey
patent: 4887109 (1989-12-01), Fujita et al.
patent: 4931818 (1990-06-01), Gates
patent: 4933694 (1990-06-01), Gates et al.
patent: 5066971 (1991-11-01), Kodaira
patent: 5410381 (1995-04-01), Kameyama et al.
patent: 5555058 (1996-09-01), Huang et al.
Minolta Co. , Ltd.
Perkey W. B.
LandOfFree
Finder field-of-view frame switching mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Finder field-of-view frame switching mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finder field-of-view frame switching mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-672627