| 摘要 |
[Problem] To control increases in size of a zoom lens barrel in a zoom lens barrel for carrying out focusing along with zooming. [Solution] Provided is a zoom lens barrel (40) that is used in a television camera device and an interchangeable lens and accommodates a plurality of lens frames (45-3, 45-4) for respectively holding each of a plurality of movable lens units (Z3, Z4) and supporting the same so as to be movable back and forth along the optical axis, wherein the zoom lens barrel is provided with a plurality of linear motors (46-3, 46-4) that respectively move the plurality of lens frames (45-3, 45-4) back and forth for focusing accompanying zooming, and the plurality of linear motors (46-3, 46-4) are disposed on the same circumference centered on the optical axis and in a plane perpendicular to the optical axis. |
