Patent ID: 7342699
Filing Date: 2008-03-11
Classification: G02B

Abstract:
1. A scanner apparatus comprising: a light beam emitting unit for emitting a light beam; a lens having a thin portion where a thickness between an entrance plane side and an emission plane side is reduced, of a shape lacking a surface top part on the entrance plane side having a convex cross section, for converging a light beam incident on a portion other than the thin portion from said light beam emitting unit on a single focal point after emitted from the emission plane side; and a deflecting unit having a deflecting plane for reflecting and deflecting the light beam from said lens, for scanning the light beam in one scanning direction; wherein a plurality of said light beam emitting units are provided, wherein an equal number of light beams are incident on both sides of the thin portion of said lens, and wherein the thin portion is formed to extend in one scanning direction, and a plurality of light beams are aligned in other scanning direction crossing the one scanning direction and incident on said lens.