An optical unit (1) comprising: a fixed part (2) adapted to hold an object-side fixed lens group (Gf) and an image-side stationary lens group (Gb) and at least partly a cylindrical shape about a predetermined axis (Fig. C); a movable member (3) arranged to hold a movable lens group (Gv) between the object-side stationary lens group and the image-side stationary lens group is disposed radially inside the fixed member and has a cylindrical shape about the axis ; anda voice coil motor (10) arranged to move the movable member with respect to the fixed member in the axial direction using a spool (11) disposed on the stationary member and a magnet (12) attached to the movable member Part is arranged to move relative, the magnet being magnetically polarized in a direction orthogonal to the axis, the movable part comprising a moving-side sliding surface (31c) adapted to slide over an inner circumference of the fixed part, anda distance (L1 ) from a position closest to an object side to a position closest to an image side of the moving-side sliding surface in the axial direction of the movable part is larger than a distance (L2) from a emitting surface of the object-side stationary lens group; which is held by the fixed part, to an incident surface of the image side fixed lens group held by the stationary part.
展开▼
