Patent ID: 9581929
Date: 2017-02-28
CPC Classifications: G02B,G03G

Claim:
1. An optical scanning apparatus, comprising: an optical deflector having a polygon mirror reflecting a light flux emitted from a light source to carry out scanning; a drive unit rotating the polygon mirror about a rotation axis; a board supporting the drive unit and the polygon mirror; a housing to which the board is fixed; at least two protruding portions protruding from the housing, wherein each of the protruding portions has a hole through which a screw fixing the board to the housing is inserted and a bearing surface which is provided at a position around the hole and which supports the board; and first and second abutment portions protruding from the housing, wherein each of the first and second abutment portions has a top, which contacts with an undersurface of the board, and supports the board at a position different from the bearing surfaces, and wherein a distal end of each of the first and second abutment portions protrudes toward the board higher than the bearing surfaces in a direction along the rotation axis.