Rotary drive apparatus

A rotary drive apparatus arranged to cause incoming light coming from a light source to be emitted to an outside while changing a direction of the incoming light, the rotary drive apparatus comprising:

• a motor including a hollow shaft arranged to extend along a central axis extending in a vertical direction, the hollow shaft including a through hole arranged to pass therethrough in an axial direction;
• a flywheel including (i) at least one of a mirror and a prism arranged to reflect or refract the incoming light, and (ii) a lens to allow the incoming light to pass therethrough;
• and
• a laser module including the light source;
• wherein
• the motor includes:
• a stationary portion including a stator;
• and
• a rotating portion supported through a bearing portion to be rotatable about the central axis with respect to the stationary portion, the rotating portion including a magnet arranged opposite to the stator;
• the stationary portion includes a base portion arranged to directly or indirectly support the stator;
• at least a portion of the laser module is arranged below the base portion;
• the through hole defines a light path along which the incoming light travels;
• the flywheel is supported by the rotating portion;
• and
• the lens allows the incoming light to pass therethrough after the direction of the incoming light is changed in the flywheel by at least one of the mirror and the prism.