Lens-Barrel and Image Pickup Apparatus

摘要

To provide a lens-barrel and an image pickup apparatus that can effectively suppress hitting sound by lens frames and also are advantageous in miniaturization of the lens-barrel. Flow path ( 70 ) is provided at a position (A) where a first fixed lens frame ( 22 ) faces a movable lens frame ( 32 ) and a position (B) where the movable lens frame ( 32 ) faces the first fixed lens frame ( 22 ) so that air flow resistance can be generated when the air is released which is present between the first and second lens frames if these lens frames get close to each other. The flow path ( 70 ) is provided so that the air present between a first fixed lens ( 20 ) and a movable lens ( 30 ) may also be passed through the flow paths when the first fixed lens frame ( 22 ) and the movable lens frame ( 32 ) get close to each other.