Drive device for lens barrel and diaphragm shutter

Details Drive device for lens barrel and diaphragm shutter Drive device for lens barrel and diaphragm shutter

1986-12-01

1987-10-27

Perkey, W. B.

354439, 3541951, 35419512, 3542341, G03B 300, G03B 908

Patent

active

047025832

ABSTRACT:
A drive device for a lens barrel and a diaphragm shutter is disclosed. The drive device of this invention comprises a stepping motor including a stator and rotors. The stator is constituted by a plurality of stator members disposed around a lens barrel, each having a bifurcate portion around which a conductor is wound, and the bifurcate portions are disposed in face-to-face relationship with each other with a predetermined space being interposed therebetween. The rotors are respectively disposed in the predetermined spaces. The driving forces of the rotors are independently transmitted at least to the lens barrel including a photographic lens element and to a diaphragm shutter.

REFERENCES:
patent: 3638550 (1972-02-01), Hereford
patent: 3882522 (1975-05-01), Erlichman
patent: 4472039 (1984-09-01), Iwata et al.
patent: 4648701 (1987-03-01), Ogihara et al.

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