| 摘要 |
<p>A scanning optical device comprises at least one light source unit for emitting a light flux, a first deflector for deflecting the emitted light flux in a sub-scanning direction, a capacitor optical system for generating an intermediate image of the light flux deflected by the first deflector, a condensing optical system for condensing a light flux diverged from the generated intermediate image, a second deflector for deflecting the condensed light flux in a main-scanning direction, and a scanning optical system for scanning the surface to be scanned with the light flux deflected by the second deflector. The capacitor optical system has an f-? characteristic, the condensing optical system has an f-sin? characteristic, and the scanning optical system has an f-sin? characteristic.</p> |
