Lens barrel and optical apparatus
AssigneeCanon Kabushiki Kaisha
InventorYosuke Fukai
Life of this patent
Estimating the term…
Abstract
A lens barrel includes first and second rack members that movably support the first and second holding members in the optical axis direction, and first and second driving members that drive the first and second holding members. The first and second guide shafts that guide the movement of the first and second holding members and the first and second guide shafts that drive the third holding member in the first and second directions orthogonal to each other in the optical axis direction and orthogonal to each other. It has a two-coil unit and a correction unit including first and second urging members that urge the third holding member in the optical axis direction, and has a first rack member, a first drive member, a first guide shaft, and a correction unit. A predetermined arrangement is satisfied.
Claims10
A lens barrel comprising:
- a first rack member configured to movably support a first holding member in an optical axis direction, the first holding member holding a first optical element:
- a first driving member configured to drive the first holding member via the first rack member;
- a second rack member configured to movably support a second holding member in the optical axis direction, the second holding member holding a second optical element;
- a second driving member configured to drive the second holding member via the second rack member;
- a first guide shaft and a second guide shaft configured to guide movements of the first holding member and the second holding member in the optical axis direction, respectively;
- and
- a correction unit that includes:
- a first coil unit configured to drive a third holding member in a first direction orthogonal to the optical axis direction, the third holding member holding a correction element,
- a second coil unit configured to drive the first holding member in a second direction orthogonal to the optical axis direction and the first direction, and
- a first urging member and a second urging member configured to urge the third holding member in the optical axis direction,
- wherein the first rack member, the first driving member, the first guide shaft, and the first urging member are arranged on a first straight line parallel to an axis of symmetry of the first and second coil units when viewed from the optical axis direction, and
- wherein the second rack member, the second driving member, the second guide shaft, and the second urging member are arranged on a second straight line parallel to the axis of symmetry when viewed from the optical axis direction.
An optical apparatus comprising a lens barrel,
- wherein the lens barrel includes:
- a first rack member configured to movably support a first holding member in an optical axis direction, the first holding member holding a first optical element;
- a first driving member configured to drive the first holding member via the first rack member;
- a second rack member configured to movably support a second holding member in the optical axis direction, the second holding member holding a second optical element;
- a second driving member configured to drive the second holding member via the second rack member;
- a first guide shaft and a second guide shaft configured to guide movements of the first holding member and the second holding member in the optical axis direction, respectively;
- and
- a correction unit that includes:
- a first coil unit configured to drive a third holding member in a first direction orthogonal to the optical axis direction, the third holding member holding a correction element,
- a second coil unit configured to drive the first holding member in a second direction orthogonal to the optical axis direction and the first direction, and
- a first urging member and a second urging member configured to urge the third holding member in the optical axis direction,
- wherein the first rack member, the first driving member, the first guide shaft, and the first urging member are arranged on a first straight line parallel to an axis of symmetry of the first and second coil units when viewed from the optical axis direction, and
- wherein the second rack member, the second driving member, the second guide shaft, and the second urging member are arranged on a second straight line parallel to the axis of symmetry when viewed from the optical axis direction.
Dependencies are inferred from the claim text.