| 摘要 |
This light scanning device (6) includes a rotating polygon mirror (620), a shaft support (613), a plurality of light-emitting parts (651, 652), and a plurality of scanning lenses (631-634). Light beams from the plurality of light-emitting parts (651, 652) are incident onto a plurality of different incident positions along the axial direction parallel to the rotary shaft of the rotating polygon mirror (620). In the light scanning device (6), when a specific light beam incident onto the incident position of the rotating polygon mirror (620) furthest away from the shaft support (613) among a plurality of light beams passes through the optical axis of the scanning lenses (631-634), the angle between the specific light beam incident onto the rotating polygon mirror (620) and the optical axis of the scanning lenses (631-634) is set to be the angle nearest to a reference angle predetermined as a requirement for the scanning lenses (631-634). |
