Light scanning system

A light scanning system for causing a light spot to scan a scan surface at a constant speed comprising

• a light source,
• a deflecting means which deflects a light bundle radiated from the light source,
• a line image imaging optical system which is disposed between the light source and the deflecting means and images a light bundle radiated from the light source on a deflecting surface of the deflecting means as a line image extending in a direction in which the light bundle is deflected, and
• a scanning/imaging optical system which is disposed between the deflecting means and the scan surface and images the light bundle deflected by the deflecting means on the scan surface as a light spot, wherein the improvement comprises that
• the scanning/imaging optical system comprises a first aspheric mirror which is symmetric with respect to an axis of rotation and is disposed on the light inlet side of the scanning/imaging optical system and a second aspheric mirror which is anamorphic and is disposed on the light outlet side of the scanning/imaging optical system, the first aspheric mirror having a negative power in the direction in which a light bundle impinging upon the first aspheric mirror is deflected and the second aspheric mirror having a positive power in the direction in which a light bundle impinging upon the second aspheric mirror is deflected.