Patent ID: 9436004
Filing Date: 2016-09-06
CPC Classification: G02B

Claim Text:
1. An optical scanning device, comprising: an optical housing; an elongated optical element arranged in the optical housing, the elongated optical element having a first surface and a second surface extending in a main-scanning direction; a retaining member provided at a side opposite to a surface of the optical housing on which the elongated optical element is arranged, the retaining member being configured to maintain an attachment attitude of the elongated optical element in the optical housing; a scanning line curvature adjusting unit configured to adjust a curvature of the elongated optical element in a scanning line via the retaining member; a scanning line tilt adjusting unit configured to adjust a tilt of the elongated optical element in the scanning line by making the elongated optical element rotate on an axis of an optical axis direction via the retaining member; and an optical axis direction positioning unit configured to position the elongated optical element in the optical axis direction such that, when the elongated optical element is installed in the optical axis direction positioning unit, the optical axis direction positioning unit regulates the elongated optical element by applying pressure to end parts of the first surface such that pressure is not applied to the end parts the second surface of the elongated optical element, the optical axis direction positioning unit including,