Patent ID: 7075562

Claim:
An optical scanning device, comprising: an optical modulation part configured to modulate a beam and having an one-dimensional optical modulator array wherein a plurality of optical modulators are arranged one-dimensionally; a lighting part configured to light the one-dimensional optical modulator array; and a scanning optical system configured to deflect the beams modulated by the optical modulators in the one-dimensional optical modulator array in a direction perpendicular to the arrangement direction of the optical modulators, wherein a plurality of the one-dimensional optical modulator arrays are arranged in a direction perpendicular to the arrangement direction of the optical modulators, and the beams modulated by respective optical modulators of the one-dimensional optical modulator arrays are irradiated in a position where the beams are moved integer multiples of an arrangement pitch in the arrangement direction of the optical modulator arrays so as to be on a pixel in piles.