Patent ID: 8837015
Filing Date: 2014-09-16
Classification: G02B,G03G,H04N

Abstract:
1. An image forming apparatus, comprising: an illuminator configured to irradiate light to a photosensitive body so as to change a level of electrical potential of the photosensitive body; wherein the illuminator comprises at least one light source configured to generate light and a light guide configured to guide the light received from the light source toward the photosensitive body; and wherein the light guide comprises at least one incidence face and an emission face, the at least one incidence face facing the light source in a main scanning direction of the image forming apparatus to receive the light from the at least one light source into the light guide, the light exiting from the light guide through the emission face toward the photosensitive body, the emission face comprising a diffusion pattern formed thereon, the diffusion pattern having a plurality of semi-cylindrical structures arranged along a width direction of the light guide, and wherein a radius of curvature of the plurality of semi-cylindrical structures becomes increased while getting farther away from the at least one light source.