Patent ID: 6885485

Claim:
A multibeam scanning device that dynamically deflects a plurality of light beams emitted by a light source, the dynamically deflected optical beams being scanned on target surfaces, respectively, comprising: a deflecting system that deflects the plurality of beams emitted by the light source in a main scanning direction, the plurality of beams being aligned in the main scanning direction; a first imaging optical system upon which all the optical beams dynamically deflected by the deflecting system are incident; a plurality of optical path deflection units each of which deflects the optical path of each of the optical beams that passed through the first imaging optical system, each of the plurality of optical path deflection units being rotatable in the auxiliary scanning direction that is orthogonal to the main scanning direction; a plurality of second imaging optical systems, the plurality of beams deflected by the optical path deflection units being incident on the plurality of second imaging optical systems, respectively, the beams passed through the second imaging optical systems being converged on the plurality of target surfaces, respectively; and a position adjusting system which adjusts a position of each of the plurality of second imaging optical systems so that the positional relationship of the second imaging optical system with respect to the beam incident thereon is maintained.