Olympus Imaging Corporation

Koji Okano

Junya Harada

Kazuhiro Morisaki

Manabu Yoshii

Sayoko Okabe

A lens apparatus includes a lens housing, driven member that is driven in a first direction. A lens barrel body that includes a lens, is separated from the driven member upon receiving an impact including a component of a second direction and can move. A drive section drives the driven member in the first direction. When the lens housing receives an impact including a component of the first direction, the drive member and the driven member are separated apart, and the driven member and the lens barrel body move together in the first direction, and when the lens housing receives an impact including the component of the second direction, the drive member prevents the driven member from moving in the second direction, the driven member and the lens barrel body are separated apart, and the lens barrel body moves.

Lens apparatus

A lens frame drive apparatus for an image pickup apparatus includes: a first lens frame that moves along a plurality of guide shafts; a second lens frame that moves along the plurality of guide shafts; and a drive shaft with a cam portion for driving the first lens frame, a nut for driving the second lens frame, a feed screw portion threadably connected to the nut, and a driven portion that upon receipt of a driving force from a motor, simultaneously rotates the cam portion and the feed screw portion, formed thereon, wherein the cam portion and the feed screw portion are driven by the nut so that a total amount of movement of the second lens frame is extremely smaller than a total amount of movement of the first lens frame and the second lens frame corrects the amount of movement of the first lens frame.

Lens frame drive apparatus for image pickup apparatus

A zoom lens barrel includes a fixed frame, a rotary frame, a moving frame that moves in an optical axis direction with the rotary frame, a float key that is restricted from rotating and moves, an inner cam frame that has a cam follower, is rotationally driven by the rotary frame, and moves in the optical axis direction, a guide frame that has a cam follower, and moves in the optical axis direction, an outer cam frame moves in the optical axis direction with the guide frame, and moves relatively with respect to the guide frame, a second group zoom frame that holds a second group lens, has a cam follower, is restricted from rotating around the optical axis, and moves in the optical axis direction, and a first group zoom frame that holds a first group lens, has a cam follower, and moves in the optical axis direction.

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Hachioji, Japan

Koji Okano