Patent ID: 7593149
Filing Date: 2009-09-22
Classification: H04N

Abstract:
1. An optical scanning unit, comprising: a light source configured to emit a light beam; a lens arranged so that the light beam emitted from the light source passes therethrough; a rotatable deflector configured to deflect the light beam coming from the lens, the deflected light beam being guided to a light receiving member; a movable lens holder configured to hold the lens, the lens holder being provided in a space between the light source and the deflector; a support member having a first face located on a first side thereof, the first face facing toward a vertically-downward direction and extending in a direction substantially parallel to a light axis direction defined between the light source and the deflector, there also being a second face located on a second side, the second face being arranged opposite to the first face; an adjusting member provided on the second face and being operable from a vertically-upward direction by receiving a force; and a moving mechanism configured to move the lens holder in the light axis direction, while the lens holder being supported on the first face, using the force received by the adjusting member, the moving mechanism being on the opposite side of the adjusting member with respect to the supporting member.