Patent ID: 9217948
Filing Date: 2015-12-22
Classification: G02B,G03G

Abstract:
1. An optical scanning apparatus comprising: a deflection unit configured to deflect first and second light fluxes in a main scanning direction by a same deflection surface; an incident optical system configured to cause the first and second light fluxes to enter the deflection surface; and an imaging optical system configured to converge the first and second light fluxes deflected by the deflection unit to first and second surfaces to be scanned, respectively, wherein the imaging optical system includes a first imaging optical element having an output surface including first and second curves that the first and second light fluxes respectively enter, and wherein among light rays included in the first and second light fluxes, the light rays that are reflected by the first and second curves intersect each other in a sub-scanning cross section perpendicular to the main scanning direction.