Patent ID: 8045248
Filing Date: 2011-10-25
Classification: G02B,H04N

Abstract:
1. An optical scanning device comprising: a light source that emits a light beam modulated based on image data; a deflector that is rotatable and includes four reflecting surfaces; a light-beam splitting unit that receives the light beam from the light source and splits the light beam into a plurality of light beams such that one of the plurality of light beams is incident to one of the reflecting surfaces and another of the plurality of light beams is incident to another of the reflecting surfaces; and a first scanning optical system that receives light beams from the one of the reflecting surfaces; and a second scanning optical system that receives light beams from the other of the reflecting surfaces, wherein when one of the first scanning optical system and the second scanning optical system guides respective light beams from a corresponding one of the reflecting surfaces to a target surface, the other of the first scanning optical system and the second scanning optical system does not guide light beams from the other of the reflecting surfaces to the target surface.