US Patent 11536984 Optical unit with shake-correction function

An optical unit with shake-correction function is provided and includes: a movable body, a rotational support structure, a gimbal mechanism, and a fixed body. The rotational support structure rotatably supports the movable body having a camera module around an optical axis. The rotational support structure is rotatably supported by the gimbal mechanism around a first axis and a second axis. The rotational support structure includes a first annular groove in the movable body, a plate roller having a second annular groove, multiple spherical objects to roll between the first annular groove and the second annular groove, and a pressurization structure configured to apply a force for bringing the first annular groove and the second annular groove close to each other in the direction of the optical axis.