ROTARY DRIVE APPARATUS

This rotary drive apparatus is arranged to cause incoming light coming from a light source to be reflected, and rotate resulting reflected light, and includes a motor including a rotating portion arranged to rotate about a central axis extending in a vertical direction; and a flywheel supported by the rotating portion, and caused by the rotating portion to rotate about the central axis. The flywheel includes a lens arranged to allow the reflected light to pass therethrough; a lens frame arranged to be in contact with at least a portion of a peripheral portion of the lens; and a main body arranged to support the lens or the lens frame. The main body includes an outer cylindrical portion arranged to define at least a portion of an outer circumferential surface of the main body, and an accommodating portion in which the lens frame is arranged. At least a portion of the lens frame and at least a portion of the main body are arranged to have a first adhesion portion therebetween. At least a portion of the lens is arranged radially between the main body and the lens frame.