Patent ID: 7554710

Claim:
A two-dimensional scanning apparatus, comprising: a deflector for two-dimensionally deflecting a light beam emitted from a light source; and an optical scanning system for forming an image of the light beam deflected by a reflecting surface of said deflector onto a surface to be scanned, wherein in a plane including a one-dimensional direction of the two-dimensional directions, the light beam emitted from the light source is adapted to be incident, obliquely relative to a central axis of a two-dimensional deflection range of the light beam deflected by the deflective surface of the deflector, onto the reflecting surface of the deflector, wherein the scanning optical system does not include a reflecting surface having optical power, wherein the optical scanning system includes: a first meniscus lens having a negative optical power whose concave surface faces a side of the deflector; and a second meniscus lens having a positive optical power whose concave surface faces a side of the deflector and which is disposed in the surface-to-be-scanned side of the first meniscus lens, and wherein the second meniscus lens is tilted, about an axis perpendicular to a plane including the one-dimensional direction serving as a rotation axis, toward a side in which a light beam emitted from the light source is incident on the reflecting surface with respect to the first meniscus lens, and the second meniscus lens is shifted, in a plane including the one-dimensional direction, toward an incident side of the reflecting surface of the light beam emitted from the light source.