Patent ID: 6819461
Filing Date: 2004-11-16
Classification: G02B,H04N

Abstract:
A multibeam light source comprising:a plurality of semiconductor laser arrays, wherein each semiconductor laser array includes a plurality of semiconductor lasers each of which emits a laser beam; and a deflector that receives the laser beams and deflects the laser beams towards a recording medium, whereby an array of focuses is formed on the recording medium corresponding to each semiconductor laser array, wherein a sub-scanning beam pitch is set as Pâˆ’(A/VM)Â·VS+C, where P is a recording density interval on the recoding medium, VM is a main scanning velocity, VS is a sub-scanning velocity, A is an interval between the arrays of focuses in a main scanning direction, and C is a correction amount of the beam pitch, wherein the sub-scanning beam pitch is defined by a distance between an arbitrary point on a line connecting focuses of a preceding array of the focuses and a point that corresponds to the arbitrary point on a line connecting focuses of an adjoining array of the focuses.