Patent ID: 8570631
Filing Date: 2013-10-29
Classification: G02B

Abstract:
1. An optical scanning device comprising: a light source for emitting a laser beam; a deflection body for deflecting by reflection of the laser beam emitted from the light source; a scanning lens for scanning the laser beam deflected by the deflection body on a surface of a photosensitive body at a constant speed in a main-scanning direction; a reflection body having a surface including a reflection surface for reflecting the laser beam deflected towards the outside of the photosensitive body and having passed through the scanning lens, a first region that is arranged at an opposite side in a direction of travel of the laser beam along the main-scanning direction with respect to the reflection surface, and a second region that is arranged at a lower side with respect to the reflection surface; and a synchronizing sensor for receiving the laser beam reflected by the reflection surface to send out a detection signal of the receipt of the laser beam, wherein the reflection surface is composed of a curved arc surface depressed from both edges towards a center in the main-scanning direction, the reflection body is configured such that a center of the reflection surface in the main-scanning direction is provided at a position displaced by a predetermined range in a direction of travel of the laser beam along the main-scanning direction from a center of the reflection body in the main-scanning direction, and an installation space is arranged on the first region and the second region for attaching the reflection body to the optical scanning device.