Optical element driving mechanism

The invention provides an optical element driving mechanism. The optical element driving mechanism comprises a fixed part, a first movable part and a second driving assembly. The first movable part and the fixed part are arranged along the main shaft and can move relative to the fixed part. The second driving assembly is used for driving the first movable part to move relative to the fixed part. Viewed along the main axis, the first movable portion includes a frame having a polygonal structure and having a second recess at a corner. 本发明提供一种光学元件驱动机构。光学元件驱动机构包括固定部、第一可动部、第二驱动组件。第一可动部与固定部沿着主轴排列，可相对固定部运动。第二驱动组件用以驱动第一可动部相对固定部运动。沿着主轴观察，第一可动部包括框架，框架具有多边形的结构，且在角落处具有第二凹陷部。