Lens barrel and optical apparatus

A lens barrel comprising:

• a first guide barrel configured to guide a linear movement of a first lens system in an optical axis direction;
• a first cam barrel rotatable around an optical axis relative to the first guide barrel and including a first cam configured to move the first lens system in the optical axis direction by a rotation of the first cam barrel;
• a linear movement barrel configured to hold a second lens system;
• a second guide barrel whose linear movement in the optical axis direction is guided by the first guide barrel, the second guide barrel being configured to guide a linear movement of the linear movement barrel in the optical axis direction;
• and
• a second cam barrel movable in the optical axis direction as the second guide barrel moves in the optical axis direction, and rotatable around the optical axis relative to the second guide barrel, and the second cam barrel including a second cam configured to move the linear movement barrel in the optical axis direction by a rotation of the second cam barrel,
• wherein the linear movement barrel is disposed between the second guide barrel disposed on an outer circumference of the linear movement barrel and the second cam barrel disposed on an inner circumference of the linear movement barrel, and
• wherein the second guide barrel and the first cam barrel include a first cam mechanism configured to rotate the first cam barrel around the optical axis direction as the second guide barrel moves in the optical axis direction.

A lens barrel comprising:

• a first guide barrel configured to guide a linear movement of a first lens system in an optical axis direction;
• a first cam barrel rotatable around an optical axis relative to the first guide barrel and including a first cam configured to move the first lens system in the optical axis direction by a rotation of the first cam barrel;
• a linear movement barrel configured to hold a second lens system;
• a second guide barrel whose linear movement in the optical axis direction is guided by the first guide barrel, the second guide barrel being configured to guide a linear movement of the linear movement barrel in the optical axis direction;
• and
• a second cam barrel movable in the optical axis direction as the second guide barrel moves in the optical axis direction, and rotatable around the optical axis relative to the second guide barrel, and the second cam barrel including a second cam configured to move the linear movement barrel in the optical axis direction by a rotation of the second cam barrel,
• wherein the linear movement barrel is disposed between the second guide barrel disposed on an outer circumference of the linear movement barrel and the second cam barrel disposed on an inner circumference of the linear movement barrel, and
• wherein the first guide barrel and the first cam barrel include a second cam mechanism configured to move the first cam barrel in the optical axis direction relative to the first guide barrel as the first cam barrel rotates around the optical axis.

A lens barrel comprising:

• a first guide barrel configured to guide a linear movement of a first lens system in an optical axis direction;
• a first cam barrel rotatable around an optical axis relative to the first guide barrel and including a first cam configured to move the first lens system in the optical axis direction by a rotation of the first cam barrel;
• a linear movement barrel configured to hold a second lens system;
• a second guide barrel whose linear movement in the optical axis direction is guided by the first guide barrel, the second guide barrel being configured to guide a linear movement of the linear movement barrel in the optical axis direction;
• a second cam barrel movable in the optical axis direction as the second guide barrel moves in the optical axis direction, and rotatable around the optical axis relative to the second guide barrel, and the second cam barrel including a second cam configured to move the linear movement barrel in the optical axis direction by a rotation of the second cam barrel;
• and
• an operating ring configured to rotate around the optical axis by a rotational operation,
• wherein the linear movement barrel is disposed between the second guide barrel disposed on an outer circumference of the linear movement barrel and the second cam barrel disposed on an inner circumference of the linear movement barrel, and
• wherein the operating ring and the second guide barrel include a third cam mechanism configured to move the second guide barrel in the optical axis direction as the operating ring rotates.