Abstract: An optical unit may include a movable body having an optical element, a support body movably supporting the movable body, a detecting part to detect a variation of a tilt of the movable body, a drive mechanism to change a tilt of the movable body, an output part to connect with an external device, a control part to control the drive mechanism based on the variation detected by the detecting part to correct the tilt by the drive mechanism, and an output control part to create information regarding the variation as a signal equivalent to drive signal data which are outputted to the drive mechanism for correcting the tilt from the control part and output the information to the external device during a period when the control part makes the drive mechanism correct the tilt. An optical system comprises the optical unit and the external device.

Abstract: An optical unit may include a movable body having an optical element, a support body movably supporting the movable body, a detecting part to detect a variation of a tilt of the movable body, a drive mechanism to change a tilt of the movable body, an output part to connect with an external device, a control part to control the drive mechanism based on the variation detected by the detecting part to correct the tilt by the drive mechanism, and an output control part to create information regarding the variation as a signal equivalent to drive signal data which are outputted to the drive mechanism for correcting the tilt from the control part and output the information to the external device during a period when the control part makes the drive mechanism correct the tilt. An optical system comprises the optical unit and the external device.