Lens barrel

Details Lens barrel Lens barrel

1979-04-24

1981-02-24

Evans, F. L.

G02B 702

Patent

active

042524113

ABSTRACT:
A lens barrel comprising a lens frame formed with a thread for distance adjustment and a lens mount cylinder formed with a corresponding thread in meshing engagement with the thread formed in the lens frame. A distance ring engages the lens frame and is arranged so that the mutual position between the distance ring and the lens frame in the radial direction can be set. Stops for limiting the accurate rotational angle between the distance ring and the lens mount cylinder in the radial direction are formed in the distance ring and are engaged by projections on the lens mount cylinder.

REFERENCES:
patent: 2536500 (1951-01-01), Hinden
patent: 3888568 (1975-06-01), Norris et al.
patent: 3942876 (1976-03-01), Betensky

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