Patent ID: 6963433
Filing Date: 2005-11-08
Classification: G02B

Abstract:
1. A multibeam scanning optical device comprising: a first optical system which transforms a plurality of light beams emitted from a plurality of light source means into divergent light beams or convergent light beams; a second optical system which focuses a plurality of light beams emitted from the first optical system as a linear image in a main scanning direction in the vicinity of a deflection plane of deflecting means; the deflecting means which deflects a plurality of light beams emitted from the second optical system in the main scanning direction; and a third optical system which focuses the plurality of light beams deflected by the deflecting means on a surface to be scanned, wherein the multibeam scanning optical device further comprises a plurality of adjusting means having sensitivities different from each other which change a relative gap in a sub-scanning direction of principal ray of a plurality of light beams incident in the second optical system.