| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration of optical performance caused by the tilt of an optical system without deteriorating the driving characteristic of a focusing optical system or a variable power optical system and a shake correction optical system in the case of providing the focusing optical system or the variable power optical system and the shake correction optical system. SOLUTION: The positions of supporting rollers 2a and 3a respectively attached at three points on the outer peripheries of a focusing lens barrel 2 holding a 1st optical system L2 and a shake correction lens barrel 3 holding the shake correction optical system L3 in order to regulate the tilt of the optical systems are deviated forward or backward in an optical axis direction with respect to the centroidal positions of the respective lens barrels. However, if relation between the tilt of the optical system and a direction where an image surface is tilted due to the tilt of the optical system is reverse to each other between both optical systems, the supporting roller 2a of the lens barrel 2 is set backward from the centroidal position and the supporting roller 3a of the lens barrel 3 is similary set backward from the centroidal position, whereby the tilt of the image surface due to the tilt of both optical systems is cancelled. |
