Patent ID: 7889409

Claim:
An optical scanning device, comprising: a light beam emission unit configured to emit a light beam; a main scanning line deflection unit configured to deflect the light beam in a main scanning direction, to emit a scanning beam; a scanning lens configured to focus the scanning beam in the main scanning direction and a sub-scanning direction; a reflective optical element configured to deflect the scanning beam, the reflective optical element having a first end and a second end, the first end being affixed to a housing of the optical scanning device, a tilt adjustment unit attached to the second end of the reflective optical element, the tilt adjustment unit configured to move the second end of the reflective optical element in a direction parallel to a path of the scanning beam to adjust a tilt of a scanning line of the scanning beam irradiating a target to be irradiated; and a curve adjustment unit configured to bend the reflective optical element to adjust a curve in the scanning line of the scanning beam irradiating the target to be irradiated.