1976-10-04
1978-08-15
Gonzales, John
354 31, 354138, 354230, 354258, G03B 714
Patent
active
041077059
ABSTRACT:
A bladed shutter comprises a plurality of shutter blades, also serving as a diaphragm, which are supported by a shutter opening ring and a shutter closing ring, both disposed in a concentric manner. The shutter opening ring is rotated in response to the actuation of a shutter release to drive the shutter blades in their opening direction. The rotation of the shutter opening ring is delayed by a governor. A shutter control circuit contained within a camera and including a photoelectric transducer element controls the rotation of the shutter closing ring, and enables its rotation to close the shutter blades when a photometric value reaches a proper exposure value. The speed of rotation of the shutter opening ring is changed under the control of the governor, by modifying the relative position of the governor to the shutter opening ring by means of a governor control circuit including a photoelectric transducer element which is provided externally of the camera. Also, the timing of closing of the X-contact is made adjustable in accordance with the range setting, thus permitting automatic strobo photographing in a simple manner.
REFERENCES:
patent: 3149548 (1964-09-01), Kromer et al.
patent: 3757655 (1973-09-01), Kobayashi
patent: 3984847 (1976-10-01), Kato
Enomoto Fuzio
Hashimoto Akihiko
Gonzales John
Olympus Optical Co,. Ltd.
LandOfFree
Bladed shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bladed shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bladed shutter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1439714