Photographic camera with driving and stopping mechanism

Details Photographic camera with driving and stopping mechanism Photographic camera with driving and stopping mechanism

1980-09-25

1982-01-19

Adams, Russell E.

354 42, 354 46, 354270, 354271, G03B 708, G03B 902

Patent

active

043113737

ABSTRACT:
A photographic camera with a driving mechanism for setting of the diaphragm of the camera lens, typically an interchangeable lens unit, having a stopping device which stops the driving mechanism, wherein the focusing error resulting from the inertia of the moving parts are eliminated or reduced to an insignificant value. An armature plate is movably mounted at the side of a stop band opposite magnet poles of an electromagnet of the stopping device, with the stop band between the magnet poles and the plate, the movement of the armature being substantially crosswise to the direction of motion of the stop band. The stop band was very small dimensions, being preferably reduced to a size limited by its mechanical strength. The stop band is directly and fixedly connected to the driving mechanism and the plate bears with a small initial stress against the stop band.

REFERENCES:
patent: 1974433 (1934-09-01), Riszdorfer
patent: 3518930 (1970-07-01), Thiene et al.
patent: 3611892 (1971-10-01), Ort et al.
patent: 3868702 (1975-02-01), Strauss et al.

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