Patent ID: 8879134

Claim:
A laser scanning optical device, comprising: a light source having a plurality of emission points; a plate-like light source holder which holds the light source in a center of the light source holder; a base arranged to face the light source holder; and an attitude adjusting part which adjusts an attitude of the light source by adjusting a tilt of the light source holder, wherein the attitude adjusting part includes an inclined part and an inclination conveying part, and adjusts the tilt of the light source holder with respect to the base by displacing an abutting position of the inclined part corresponding to the inclination conveying part along an inclined surface of the inclined part, wherein the inclined part is one of a plurality of inclined parts formed on a surface of the base which faces the light source holder or on a surface of the light source holder which faces the base, the inclination conveying part is one of a plurality of inclination conveying parts provided to be respectively located between the inclined parts and the light source holder or the base, at least one inclined part among the plurality of inclined parts, configuring a first inclined part, and the remaining inclined parts configuring a second inclined part, are arranged to sandwich an optical axis of the light source, the inclined surface of the first inclined part and the inclined surface of the second inclined part are inclined to become closer to each other with respect to the surfaces on which the inclined parts are provided, as being distanced from the optical axis, and the tilt of the light source holder is adjusted with respect to the base by displacing the abutting position of the respective plurality of inclination conveying parts on the respectively corresponding inclined parts, along the inclined surface.