US Patent 11630320 Optical assembly with shake correction function

An optical assembly includes a movable body that includes an optical module, a frame body radially outward of the movable body, and support portions that swingably support the movable body with respect to the frame body. Each of the support portions includes a guide portion between the movable body and the frame body to support the movable body, and a preload portion that pushes the guide portion toward the movable body. A radially inner end portion of the preload portion is connected to a radially outer end portion of the guide portion. A radially outer end portion of the preload portion is supported by the frame body. One of the movable body and the guide portion includes a first convex surface, and the other includes a first concave surface in contact with the first convex surface.