Patent ID: 7551337

Claim:
An optical scanning apparatus, comprising: a light source part comprising a plurality of light sources configured to scan respective different targets, and coupling lenses corresponding thereto, respectively; a deflecting part configured to deflect light beams from said plurality of light sources; and an imaging part configured to form images on said respective targets with the light beams, wherein: said light source part comprises a light source unit in which said plurality of light sources, that respectively emit the light beams at angles different in a sub-scanning direction with respect to an optical standard plane, parallel to a main scanning direction and passing through a standard axis of a surface shape of a lens of said imaging part, which lens is closest to said deflecting part, said light beams being applied to said deflecting part at angles different in the sub-scanning direction, are integrally provided; said plurality of light sources are inclined so that said plurality of light sources thus respectively emit the light beams at the angles different in the sub-scanning direction with respect to the optical standard plane; and said light source part is configured in such a manner that said plurality of light sources emit the light beams which are applied to said deflecting part at angles different from each other also in the main scanning direction.