| 摘要 |
An optical scanning device includes a light source (1) having a plurality of light-emitting portions, a deflector (6) for deflecting a plurality of light beams emitted by the light source, optical elements (2,10) for guiding the plurality of light beams emitted by the light source toward the deflector and an imaging element (7) for guiding the plurality of light beams deflected by the deflector (6) onto a surface (12) to be scanned. A polarization limiting element (10) is inserted in an optical path between the light source (1) and the deflector (6) so as to limit directions of polarization of the plurality of light beams. |
