Patent ID: 9740135
Date: 2017-08-22
CPC Classifications: G02B,G03G

Claim:
1. An optical scanning device comprising: a light source; a deflection unit configured to deflect a light beam emitted from the light source; a board; and a light receiving member including a body portion, which includes a light receiving portion, and a first terminal portion and a second terminal portion, each of which is soldered to the board, wherein the light receiving portion receives the light beam deflected by the deflection unit and moving in a scanning direction, wherein the first terminal portion and the second terminal portion are located opposite each other across the body portion in an intersection direction that intersects with the scanning direction as viewed in a normal direction to a mounting surface of the board, wherein the board has a through-hole formed thereon, into which at least a part of the body portion is inserted, and includes a first soldering portion soldered to the first terminal portion and a second soldering portion soldered to the second terminal portion, the first soldering portion and the second soldering portion being located opposite each other across the through-hole in the intersection direction, and wherein, when a length in the scanning direction and a length in the intersection direction of the body portion are denoted by Lx0 and Ly0, respectively, and a length in the scanning direction and a length in the intersection direction of the through-hole are denoted by Lx1 and Ly1, respectively, the lengths Lx0, Ly0, Lx1, and Ly1 satisfy the following formula: