| 摘要 |
PROBLEM TO BE SOLVED: To respectively independently perform zooming and AF actions by a single driving motor by transmitting the rotational force of a driving motor to a focusing lens moving means in a state where a ring gear can be rotated, while transmitting it to a zooming lens moving means in a state where the rotation of the ring gear is prevented, respectively. SOLUTION: The driving force of the single driving motor 5 is switched and transmitted to zooming and AF mechanism parts by the action of a driving force transmission part constituted by combining plural planet gears and the like. When the motor 5 is turned, the movable ring gear 73 starts turning so as to transmit the driving force to the AF mechanism part. Next, when a zooming operation member and the like are operated, the motor 5 starts turning in a CCW direction, and a focusing lens group is also turned in the CCW direction and moved to a mechanical stop position on an infinity side. The movement of the gear 73 is regulated at the mechanical stop position, so that the focusing lens group is stopped. Then, the zooming operation is started and zooming magnification continuously moves in a telephoto direction.
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