Light pressure rotator and light pressure rotating device

A light pressure rotator suitable for being light pressure trapped by irradiation with light and light pressure rotated when applied with a torque to rotate in a predetermined direction about a central axis of rotation, the light pressure rotator comprising:

• three blades, wherein a reverse torque generating section generating a torque for rotating the light pressure rotator in the direction reverse to the predetermined direction is removed from a section arranged with the three blades each having a first side face extending in the radial direction from the central axis of rotation, a second side face facing the central axis of rotation, a third side face facing the first side face, a lower surface intersecting the central axis of rotation, and an upper surface facing the lower surface, wherein the third side face is not perpendicular to the first side face of the adjacent blade, wherein the removed section forms a surface perpendicular to the first side face of the adjacent blade at the third side face.