| 摘要 |
PROBLEM TO BE SOLVED: To provide an adjustment method and an adjustment device of an optical scanner having high accuracy of adjustment and high adjustment efficiency.SOLUTION: An adjustment method of an optical scanner 30 comprising a light emitting part 310 emitting a light beam from each of a plurality of light emitting elements arranged at fixed intervals, a scanning part 340 reflecting each light beam, emitted by the light emitting part 310, by a rotation mirror 341 to scan in the scanning direction, and an optical part leading each light beam scanned by the scanning part 340 to an irradiation position, includes: a step of fixing the rotation mirror 341; a focus adjustment step of adjusting a diameter of each light beam by making one light emitting element in the light emitting part 310 emit a light beam and moving the light emitting part 310 in the optical axis direction of the light beam; and a step of adjusting intervals in a direction orthogonal to the scanning direction of the light beam emitted from each of the plurality of light emitting elements by making two light emitting elements in the light emitting part 310 emit light beams, respectively, after the focus adjustment step and rotating the light emitting part 310 on a surface vertical to the optical axis direction of the light beams. |
