Patent ID: 6950216

Claim:
A light source apparatus, being used in an optical scanner for scanning a scanned surface by a plurality of light beams, the light source apparatus comprising; four or more light sources each emitting a light beam; wherein the light beam is deflected by a deflection surface of a light deflection apparatus so as to scan the scanned surface; one supporting body supporting the four or more light sources arranged along a first direction corresponding to a main scanning direction; and the four or more light sources are arranged so that light beams emitted from light sources come closer to one another in a plane including the first direction, and light beams emitted from two outer light sources become parallel to each other in a plane including a second direction corresponding to a sub-scanning direction, and light beams emitted from two inner light sources come closer to each other in the plane including the second direction, and further the light beams emitted from the two outer light sources and the light beams emitted from the two inner light sources intersect with each other on the deflection surface of the light deflection apparatus.