Patent ID: 6462853
Filing Date: 2002-10-08
Classification: G02B

Abstract:
An optical scanning device comprising:a light deflector performing deflection scanning through reflection of a beam coming from a light source; and at least one scanning and imaging component condensing the beam having undergone the deflection scanning performed by said light deflector toward a surface to be scanned, these components being enclosed by an optical housing, wherein: said device further comprises two transmission optical components each having approximately planar surfaces on both sides thereof; said two transmission optical components are disposed so as to have said at least one scanning and imaging component inserted therebetween; one of said two transmission optical components is disposed at a light exit of a cover covering said light deflector; the other of said two transmission optical components is disposed at a light exit of said optical housing; said two transmission optical components are inclined in a same direction in a sub-scanning section including a straight line perpendicular to the surface to be scanned; said transmission optical component disposed at the light exit of said cover of said light deflector is inclined with respect to the surface to be scanned in a deflection scanning plane; said transmission optical component disposed at the light exit of said optical housing lies approximately in parallel to the surface to be scanned in the deflection scanning plane; and polarization directions of the beam directed to said light deflector are approximately perpendicular to the deflection scanning plane.