Patent ID: 7813021

Claim:
A light scanning apparatus comprising a photosynthesis device having a first light source unit and a second light source unit with a plurality of light sources spaced at equal intervals side by side in one direction, respectively for emitting rays in parallel from the plurality of light sources, and a photosynthesis element for synthesizing transmitted rays from the first light source unit and reflected rays from the second light source unit on a single light path; a light receiving device for receiving first synthesized rays synthesized by the photosynthesis element through an imaging lens; and an optical deflecting device for deflecting and scanning second synthesized rays synthesized by the photosynthesis element, and the second synthesized rays passed through the optical deflecting device is being externally emitted; wherein the photosynthesis device and the light receiving device are displaced relative to the optic axis of the first synthesized rays so as to position focused spots of the first synthesized rays at the center of a light receiving element provided in the light receiving device.