Scanning optical apparatus and image forming apparatus

摘要

An object of the present invention is to provide an image forming apparatus that has a light source, deflecting device for deflecting light emitted from the light source by a rotation, a mirror for deflecting the light deflected by the deflecting device, an image bearing body to which the light deflected by the mirror is irradiated, and a lens for image-forming the light deflected by the deflecting device onto the image bearing body, wherein a plurality of lights are deflected by the one deflecting device and only the one mirror exists in an optical path along which the one light deflected by the deflecting device reaches the image bearing body.