Autofocus lens barrel

Details Autofocus lens barrel Autofocus lens barrel

1999-05-18

2000-07-25

Perkey, W.B.

Photography

With exposure objective focusing means, focusing aid, or...

Auto/manual mode selection

359825, G03B 1300, G03B 702

Patent

active

060945389

ABSTRACT:
A lens barrel capable of selecting an autofocus mode and a manual focus mode includes a fixed drum, a focusing lens movable in an optical axis direction, a driving motor, constructed of a rotor and a stator, for moving the focusing lens, the rotor rotating with respect to the stator when in an autofocus mode, the rotor and the stator rotating together as a whole with respect to the fixed drum when in the manual focus mode, a focusing lens moving mechanism for converting a rotational motion of the rotor into a motion in an optical axis direction and transmitting the optical-axis-directional motion to the focusing lens, and a subassembly constructed of a manual focus ring, a connection member for connecting the stator to the manual focus ring, and an elastic member, provided between the manual focus ring and the connection member, for making the manual focus ring and the connection member frictionally engaged with each other.

REFERENCES:
patent: 5708872 (1998-01-01), Fukino
patent: 5918078 (1999-06-01), Imura

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