Patent ID: 8810621

Claim:
An optical scanning device comprising: a rotating body having a rotation mirror that deflects a light beam emitted from a light source and a rotating shaft which supports the rotation mirror; a circuit board having a supporting member and a driving unit, the rotating body being rotatably supported by the supporting member, the driving unit driving the rotating body; a container having a positioning portion that positions a positioned portion included in the rotating body, the positioned portion projecting from the circuit board, the container containing the rotating body and the circuit board; a first fastening portion and a second fastening portion that fasten the circuit board to the container; and an adjusting portion that adjusts an angle of the rotating shaft of the rotating body with respect to the container, wherein the first fastening portion and the second fastening portion are provided such that a virtual straight line drawn on the circuit board from the first fastening portion to the second fastening portion passes through the rotating body when seen in an axial direction of the rotating shaft of the rotating body, and wherein the adjusting portion is provided on a side of the virtual straight line on which the entire rotating shaft is provided so that the rotating shaft is completely located on the same side of the virtual straight line that the adjusting portion is located.