Patent ID: 7855818
Filing Date: 2010-12-21
Classification: G02B,H04N

Abstract:
1. An optical scanning apparatus comprising: a light source unit that emits a light beam; a light-source activating unit that activates the light source unit; an aperture unit including an opening to limit a beam width of the light beam output from the light source unit; a light deflection unit that includes a reflection surface configured to deflect the light beam output from the light source unit, the reflection surface being configured to rotate; and an optical system that forms an image on a spot on a scan target surface with the light beam deflected by the light deflection unit, wherein the aperture unit is arranged such that a center of the light beam incident to the light deflection unit in a main-scanning direction, which corresponds to a longitudinal direction of the scan target surface, substantially aligns with a rotation axis of the reflection surface on the reflection surface.