| 摘要 |
PROBLEM TO BE SOLVED: To improve image quality by easily correcting color aberration are due to a difference in a refractive in an fθlens. SOLUTION: A recording position i is converted into a correction index consisting of an integer part j and a decimal partαby using a correction table beforehand set corresponding to the deviation in the recording position due to the color aberration. Then, the pixel data respectively corresponding to j, j+1 are interpolation operated according to a following relation by makingαan interpolation coefficient. y(i)=(1-α).x(j)+α.x(j+1). Then, a light beam is pulse width modulated based on the correction data y(i). |
