Patent ID: 9621756
Date: 2017-04-11
CPC Classifications: G02B,H04N

Claim:
1. An optical scanning device comprising: a light source that emits light; a deflector that deflects the light emitted from the light source and allows the deflected light to be scanned in a main scanning direction; a housing that accommodates the deflector; a synchronization detection sensor mounted in the housing, detecting scanning light from the deflector, and outputting a write timing reference signal of image data; and a sensor board mounted with the synchronization detection sensor, wherein the sensor board is formed with a light transmitting hole for allowing a part of the scanning light to pass therethrough when an incident position of the scanning light for a light receiving surface coincides with a center position of the light receiving surface in a sub-scanning direction on an extension line of a center line of the light receiving surface of the synchronization detection sensor in the sub-scanning direction.