Bladed shutter for camera with focal plane shutter

Details Bladed shutter for camera with focal plane shutter Bladed shutter for camera with focal plane shutter

1976-12-23

1979-09-04

Griffin, Donald A.

354236, G03B 900, G03B 908

Patent

active

041666852

ABSTRACT:
A bladed shutter is assembled into an interchangeable lens of a camera with a focal plane shutter, and comprises a plurality of shutter blades for opening and closing a taking light path, a pair of shutter opening and shutter closing rings for respectively opening and closing the shutter blades, a shutter opening governor for controlling the operation of the shutter opening ring, a shutter closing governor for controlling the operation of the shutter closing ring, a diaphragm mechanism for limiting the extent of rotation of the shutter opening ring to adjust the degree of opening of the shutter blades, a shutter cam for adjusting the degree of engagement between the shutter closing governor and the shutter closing ring, and a shutter charging mechanism interlocked with a drive lever provided on the part of the camera for energizing the shutter opening ring and the shutter closing ring. The focal plane shutter is operated at a slow rate while the bladed shutter is effective to provide a necessary photographic operation.

REFERENCES:
patent: 2620712 (1952-12-01), Clifford
patent: 2708395 (1955-05-01), Wagner et al.
patent: 3108528 (1963-10-01), Rentschler
patent: 3662664 (1972-05-01), Goshima
patent: 3675561 (1972-07-01), Schwarz
patent: 3703136 (1972-11-01), Schwarz
patent: 3757655 (1973-09-01), Kobayashi
patent: 3953865 (1976-04-01), Matsumoto
patent: 3994007 (1976-11-01), Uchiyama etal.
patent: 4016584 (1977-04-01), Sato et al.
patent: 4041511 (1977-08-01), Ketai et al.

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