A drive device comprising: a base portion provided with a detection unit that detects information that is obtained from a predetermined detection range or a transmission unit that transmits information to a predetermined transmission range; a holding unit that is mounted to a driving shaft that is rotated by a drive unit, and holds the base portion, and a base to which the holding unit is mounted, characterized in that the holding unit forms an inclined plane (20a, 20Aa) inclined by a predetermined angle (θ) in a range larger than 0° and smaller than 90° with respect to a plane (PLi) orthogonal to an axis (AXd) along which the driving shaft is disposed, and rotates the base portion around the axis (AXd) while holding the base portion along the inclined plane (20a, 20Aa), and the holding unit includes a first frame body that is mounted to the base so as to be swingable around a first swing axis, a second frame body that is mounted to the first frame body so as to be swingable around a second swing axis orthogonal to the first swing axis and has a planar bottom portion (22b, 22Ab) to which the base portion is mounted, and a rotating member of which a base end side is mounted to the driving shaft and a tip side is provided with the inclined plane (20a, 20Aa), and which rotates around the axis (AXd) in a state where the inclined plane is in contact with the bottom portion. a base portion provided with a detection unit that detects information that is obtained from a predetermined detection range or a transmission unit that transmits information to a predetermined transmission range; a holding unit that is mounted to a driving shaft that is rotated by a drive unit, and holds the base portion, and a base to which the holding unit is mounted, characterized in that the holding unit forms an inclined plane (20a, 20Aa) inclined by a predetermined angle (θ) in a range larger than 0° and smaller than 90° with respect to a plane (PLi) orthogonal to an axis (AXd) along which the driving shaft is disposed, and rotates the base portion around the axis (AXd) while holding the base portion along the inclined plane (20a, 20Aa), and the holding unit includes a first frame body that is mounted to the base so as to be swingable around a first swing axis, a second frame body that is mounted to the first frame body so as to be swingable around a second swing axis orthogonal to the first swing axis and has a planar bottom portion (22b, 22Ab) to which the base portion is mounted, and a rotating member of which a base end side is mounted to the driving shaft and a tip side is provided with the inclined plane (20a, 20Aa), and which rotates around the axis (AXd) in a state where the inclined plane is in contact with the bottom portion. a first frame body that is mounted to the base so as to be swingable around a first swing axis, a second frame body that is mounted to the first frame body so as to be swingable around a second swing axis orthogonal to the first swing axis and has a planar bottom portion (22b, 22Ab) to which the base portion is mounted, and a rotating member of which a base end side is mounted to the driving shaft and a tip side is provided with the inclined plane (20a, 20Aa), and which rotates around the axis (AXd) in a state where the inclined plane is in contact with the bottom portion.