Patent ID: 8368971

Claim:
A light scanning apparatus comprising: a light source that emits a modulated coherent light beam; a scanner configured to scan the modulated coherent light beam from a light source; a light beam component generator configured to divide the modulated coherent light beam outgoing from the scanner into a plurality of light beam components, the plurality of light beam components each having a peak in light amount; and an optical system configured to converge each of the plurality of light beam components so that the plurality of converged light beam components impinge on a scan surface at incident angles different from each other, and configured to superpose the plurality of converged light beam components at an identical position on the scan surface; wherein, when Napier's number is represented as e, and a part where a light amount is 1/e 2 or more of the peak in each of the light beam components is defined as an effective light flux part, the plurality of light beam components include a plurality of separated light beam components which separate from a certain effective light flux part, and a plurality of overlapping light beam components which overlap the certain effective light flux part.