1990-03-21
1991-01-29
Gellner, Michael L.
35419512, 354212, G03B 100, G03B 300
Patent
active
049890263
ABSTRACT:
A bifocal camera includes a first and second photographic optical systems which have focal lengths different from each other. A stationary mirror is arranged on the optical axis of the first optical system, and an exposure opening is positioned on the optical axis of the second optical system. A movable mirror is arranged to be movable between first and second positions. At the first position, the movable mirror interrupts incident light beams from the second optical system and guides incident light beams, which are passed through the first optical system and reflected by the stationary mirror, to the exposure opening. At the second position, the movable mirror interrupts the light beams reflected by the stationary mirror and allows the incident light beams form the second optical system to be made incident to the exposure opening. The movable mirror is shifted to the second position by a switching mechanism when a film is to be transferred along the exposure opening.
REFERENCES:
patent: 4527874 (1985-07-01), Ohmura
patent: 4564278 (1986-01-01), Ohmura
patent: 4609270 (1986-09-01), Kohno et al.
patent: 4655571 (1987-04-01), Ohmura et al.
patent: 4772903 (1988-09-01), Labaziewicz
Matsutani Shunji
Suzuki Tatsuya
Gellner Michael L.
Olympus Optical Co,. Ltd.
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