Patent ID: 6856335
Filing Date: 2005-02-15
Classification: G02B,G03G,H04N

Abstract:
1. An optical scanning device for scanning plural photosensitive surfaces, comprising: a plurality of laser light units each configured to emit a laser beam; a deflecting device configured to deflect the laser beam emitted from each of the plurality of laser light units to sweep a predetermined plane; and a scanning image forming optical unit configured to project the laser beams deflected by the deflecting device on the plural photosensitive surfaces, respectively, to scan the plural photosensitive surfaces with the laser beams, the scanning image forming optical unit including a plurality of optical detecting devices configured to detect the laser beams and a first plurality of reflecting devices positioned to reflect at least two laser beams of the laser beams toward one of the plurality of optical detecting devices, wherein the first plurality of reflecting devices are each positioned on a plane substantially parallel to a respective one of the predetermined planes in the vicinity of one end of optical scanning of a respective one of the laser beams scanning a respective one of the plural photosensitive surfaces.