Patent ID: 8730290

Claim:
An optical scanning device comprising: a light source in which a plurality of light-emitting units, each emitting a laser beam, are arranged in a two-dimensional array; an optical element that changes a divergence angle of each of the laser beams emitted from the light-emitting units; a first supporting member that has a contact portion with which the light source makes contact; a splitting element that splits a part of each of the laser beams passing through the optical element, and wherein the optical element is located between the light source and the splitting element, such that the laser beams pass through the optical element before being split by the splitting element; a light receiving unit that holds a light-receiving element, and wherein the light-receiving element receives the laser beams split by the splitting element, and outputs a signal used to control an intensity of the laser beams emitted from the light emitting units, the light-receiving element being configured such that the laser beams that are received by the light-receiving element pass through the optical element before being split by the splitting element; a second supporting member that supports the optical element and the splitting element; and an input optical system that inputs the laser beams split by the splitting element to the light-receiving element, wherein the light source, the optical element, the splitting element, the light-receiving element, and the input optical system are integrally supported, and wherein the second supporting member and the light receiving unit are supported by the first supporting member, and the second supporting member is fixed to the first supporting member such that a relative position between the light source and the light-receiving element is fixed, and the optical scanning device includes a ring-like convex portion, the optical scanning device further includes an optical housing, and wherein the optical housing includes a circular hole, and the ring-like convex portion is fitted into the circular hole, and the optical scanning device further includes: a substrate on which the light source is mounted, wherein the first supporting member supports the substrate, and the optical scanning device includes a pressing member that presses the light source against the contact portion via the substrate.