Patent ID: 8482590
Filing Date: 2013-07-09
Classification: G02B,G03G

Abstract:
1. An optical scanning device comprising: a housing; a light source that emits a light beam; a rotatable polygon mirror that receives the light beam from the light source while rotating and deflects the light beam by reflecting the light beam in a direction corresponding to an angle of rotation thereof; a scanning optical system that guides the light beam from the rotatable polygon mirror to a scanning object in such a manner as to repeatedly scan the scanning object with the light beam; first and second reflective mirrors one of which is provided inside a deflection area within which the light beam is deflected by the rotatable polygon mirror; and a photodetector that receives the light beam reflected by the one of the first and second reflective mirrors and detects the timing of scanning of the scanning object with the light beam, wherein the scanning object is one of first and second scanning objects, and wherein the housing includes wherein the first and second supports are provided at such respective positions that the first reflective mirror to be supported by the first support and the second reflective mirror to be supported by the second support overlap each other, and only one of the first and second reflective mirrors is supportable by a corresponding one of the first and second supports.