| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a multibeam scan apparatus compact and stably scan deflected beams by the action of a deflecting disk diffracting and passing entering beams by setting at the multibeam scan apparatus the deflecting disk which can deflect and scan at least two beams simultaneously. SOLUTION: A multibeam scan apparatus has light sources 10a, 10b, 10c, 10d for generating and projecting light, a beam changer 20 for deflecting and scanning beams projected from each light source, and a beam correction means 30 for correcting deflected beams. The light sources 10a-10d are semiconductor lasers projecting laser light and can be driven selectively. The beam changer 20 is provided with a driving motor 21, and a deflecting disk 23 of a plurality of sectors 24a-24f set at a rotary shaft 21a of the driving motor 21 and scanning, deflecting entering beams. The sector has a pattern formed to diffract, pass the entering beams at the rotation of the deflecting disk 23 and deflect, scan the beams per scan line.</p> |
