| 摘要 |
<p>A scanning optical apparatus includes, a light source portion a deflector for deflecting a beam from the light source portion a first optical element for converting the beam from the light source portion into a nearly parallel beam a second optical element for focusing the nearly parallel beam into a linear image on a deflection/reflection facet of the deflector a third optical element for converging a beam deflected by the deflector on a predetermined surface a detecting element for detecting the beam deflected by the deflector and a fourth optical element for guiding the beam deflected by the deflector to the detecting element, wherein the fourth optical element and the second optical element are integrally formed. <IMAGE></p> |
