Patent ID: 8355192

Claim:
An optical scanning apparatus comprising: a light source that emits a laser light; a lens unit including a lens through which the laser light emitted from the light source is passed, and a support member supporting the lens, wherein a first gap is formed between the support member and the lens in a condition where the support member supports the lens; a deflect device that deflects and scans the laser light on an image bearing member; a housing that internally includes the deflect device, wherein in a condition where the lens unit is assembled to the housing, the housing includes an opening portion through which the laser light emitted from the light source passes, wherein a second gap is formed between the support member and the housing in a condition where the lens unit is supported by the housing; and a single elastic member pinched between the lens and the housing, wherein the single elastic member blocks the second gap between the support member and the housing and the first gap between the support member and the lens.