Patent ID: 6496293
Filing Date: 2002-12-17
Classification: B41J,G02B

Abstract:
An optical scanning device, comprising:an aperture shaping a beam from a light source; a light deflector deflecting the beam; and a scanning imaging optical system condensing the deflected beam toward a surface to be scanned so as to form a beam spot on s aid surface to be scanned, wherein: a wavelength &lgr; of the beam emitted by the light source satisfies: 350 (nm)&lE;&lgr;&lE;600 (nm)â€ƒâ€ƒ(1) and, a desired diameter &phgr; of the beam spot and the wavelength &lgr; satisfy: 0.5 (mm)&lE;&phgr;2/&lgr;&lE;6 (mm)â€ƒâ€ƒ(2).