Patent ID: 6900917
Filing Date: 2005-05-31
Classification: G02B

Abstract:
1. A laser scanning apparatus, comprising: a light source to emit light fluxes; a first imaging optical system to magnify or reduce the light fluxes emitted from the light source in a given position and angle; a light deflector to deflect and reflect the light fluxes penetrated through the first imaging optical system; and a second imaging optical system to correct optical errors in the light fluxes reflected from the light deflector, and having a refraction/reflection lens part to alternatively refract and reflect the light fluxes reflected from the light deflector so that the light fluxes are refracted at least two times, wherein the refraction/reflection lens part comprises only one lens having a reflection face at one surface thereof, the reflection face being defined by a locus formed by the rotation of a non-circular curved line extending in the main scanning direction, about an axis perpendicular to the sub-scanning direction.