| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical scanner configured to effectively reduce positional relation error when an optical element holding member is fastened to an optical housing with screws.SOLUTION: An optical scanner 5a includes: one or more semiconductor light-emitting elements, a first optical system, a light deflector, and a second optical system, which are stored in an optical housing in a predetermined positional relationship. The one or more semiconductor light-emitting elements and a plurality of optical elements constituting the first optical system are provided in an optical element holding member 510. The optical element holding member is fastened to the optical housing with a plurality of screws 20. The optical housing fixedly includes a light source regulation part 501, which is provided in the optical element holding member and regulates the one or more semiconductor light-emitting elements 521, 522 held by a light source holding part 51 from being displaced/deformed in a main scanning direction in the optical housing. |
