Nikon Corporation

Yoh Wakamizu

Shigemasa Sato

Hidefumi Ota

Hitoshi Nishimoto

The present invention provides a miniaturized lens barrel and optical instrument. The lens barrel () is constituted to be provided with a lens (L) which is retained in a retaining frame () pivotally supported by a shaft portion () parallel to the optical axis (A), and which moves between a first position and a second position in a plane perpendicular to the optical axis by rotation of the retaining frame about the shaft portion; a protuberance () formed to protrude in a direction perpendicular to the optical axis; and a moving member () which is moveable with respect to the retaining frame and which includes a retaining face portion () which, in a state where it abuts the protuberance, retains the lens in the first position, and a recessed portion () formed at one portion of the retaining face portion; and is constituted such that the protuberance moves between a state where it abuts the retaining face portion, and a state where it is accommodated in the recessed portion, in accordance with movement of the moving member, and the lens is retained in a second position in the state where the protuberance is accommodated in the recessed portion.

Lens barrel and optical instrument

A driving apparatus of the present invention comprises: a lead screw which rotationally drives; and a follower section to hold a driven member L and to rectilinearly move based on rotation of the lead screw. The follower section comprises a first tooth and a second tooth that faced a side portion of the lead screw and are opposite to each other and a third tooth provided in a position different from those of the first tooth and the second tooth. When the follower section rectilinearly moves based on the rotation of the lead screw, power is transferred with the lead screw and the first tooth being engaged with each other, and the lead screw is in a non-contact state with the second tooth and the third tooth.

Driving apparatus, lens barrel and camera

A camera capable of conducting a wireless communication includes a wireless communication circuit and a wireless communication antenna. The wireless communication antenna, which is disposed at a non-metal movable member that can advance and retreat relative to a camera body, moves relative to the camera body.

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Yokohama, Japan

Yoh Wakamizu