| 摘要 |
An optical scanner includes a light source configured to emit a light beam, a scanning unit (201) configured to deflect the light beam from the light source so as to scan a photosensitive member (102), an optical lens (207-210) configured to guide the light beam scanned by the scanning unit (201) onto the photosensitive member (102), and a lens supporting unit (211) having a fixing portion (301) configured to fix the optical lens (207-210), wherein the lens supporting unit (211) includes a movable supporting portion (302) configured to restrict movement of the optical lens (207-210) in a direction (z) perpendicular to a scanning direction (x) of the light beam and an optical axis direction (y) of the optical lens (207-210), to restrict movement of the optical lens (207-210) in the optical axis direction (y), and to support the optical lens movably in the scanning direction (x). |
