| 摘要 |
An apparatus for scanning a plane with light beams is disclosed, in which divergent laser emitting beams emitted from laser beam emitting points of a semiconductor laser unit are collimated by a collimator lens and directed toward a refractor located at a position at which the individual laser beams are spatially separated from each other. The refractor projects the laser beams in slightly different directions. The laser beams transmitted from the refractor are converged by a convergent lens to be incident on a galvanomirror. As the galvenomirror is swinging about its axis of swinging, the laser beams reflected by it are deflected. A surface is thus scanned by the convergent laser beams from the galvanomirror. |
