the present invention relates to a spotlighted device , more particularly , to a light source spotlighted device using in a scan device to make light condense in the first axial of a scanning plate and disperse uniformly in the second axial of the scanning plate , wherein the first axial and the second axial are perpendicular to one another . when light passing through the light source spotlighted device of the present invention to form a banding shining area on the scanning plate , a length of the banding shining area in the first axial will be reduced and the light which is distributed in the second axial will become more uniformly to avoid a dim area defect in a scanning process and to increase qualities of scanning image .