Lens barrel and optical apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroyoshi Inaba
Life of this patent
Estimating the term…
Abstract
Provided is a lens barrel which causes at least one lens to be movable in an optical axis direction. The lens barrel includes a first tube; a second tube that holds the lens and is movable relatively to the first tube in the optical axis direction; and either one of the first and the second tube includes a first and a second roller which contact with the other tube in a plane orthogonal to the optical axis direction, and the first roller and the second roller are rotable in accordance with the relative movement of the second tube and movable in a direction orthogonal to the optical axis direction at the time of the movement of the second tube. One tube includes a limiting member for limiting the movement of the second roller in the direction orthogonal to the optical axis direction and in a direction to the other tube.
Claims11
A lens barrel having a lens movable in an optical axis direction, the lens barrel comprising:
- a first tube;
- and
- a second tube that holds the lens,
- wherein the first tube and the second tube are relatively movable in the optical axis direction,
- wherein either one of the first tube and the second tube includes a first roller and a second roller which are brought into contact with the other tube in a plane orthogonal to the optical axis direction,
- wherein the first roller and the second roller are rotatable in accordance with the relative movement of the second tube and movable in a direction orthogonal to the optical axis direction, and
- wherein the one tube is configured not to limit a movement of the first roller in a direction to the other tube and to limit a movement of the second roller in the direction to the other tube.
An optical apparatus comprising:
- a camera;
- and
- a lens barrel having a lens movable in an optical axis direction,
- wherein the lens barrel comprises:
- a first tube;
- and
- a second tube that holds the lens,
- wherein the first tube and the second tube are relatively movable in the optical axis direction,
- wherein either one of the first tube and the second tube includes a first roller and a second roller which are brought into contact with the other tube in a plane orthogonal to the optical axis direction,
- wherein the first roller and the second roller are rotatable in accordance with the relative movement of the second tube and movable in a direction orthogonal to the optical axis direction, and
- wherein the one tube is configured not to limit a movement of the first roller in a direction to the other tube and to limit a movement of the second roller in the direction to the other tube.
Dependencies are inferred from the claim text.