Photographic taking lens driving means

Details Photographic taking lens driving means Photographic taking lens driving means

1984-03-02

1985-05-28

Adams, Russell E.

Optics: motion pictures

Removable film strip magazine type

3541951, 352140, 350255, G03B 310

Patent

active

045196915

ABSTRACT:
The invention describes a taking lens driving system using permanent magnets provided inside of the lens barrel. A plurality of movable coils surrond the circumference of the taking lens and are arranged so as to transverse the magnetic flux of the permanent magnets.
At least one of the movable coil members drives the taking lens unit, while the other coils are used to the range of movement of the movable coil member.

REFERENCES:
patent: 4152060 (1979-05-01), Specht
patent: 4194811 (1980-03-01), Barry
patent: 4291958 (1981-09-01), Frank et al.
patent: 4303324 (1981-12-01), Marcus
patent: 4423941 (1984-01-01), Iwata et al.
patent: 4466725 (1984-08-01), Hirohata
patent: 4472024 (1984-09-01), Konomura et al.

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