| 摘要 |
An optical scanner comprises a light source, a reflection mirror, deflection device, and an f.theta lens fixed to a plate-shaped bracket. The optical scanner is characterized in that a luminous flux emitted from the light source is guided to the deflection device by the reflection mirror and the luminous flux deflected by the deflection device is guided to the f.theta lens, a light source optical path from the light source to the reflection mirror is arranged to be tilted with respect to a plane which is drawn by an optical axis of a scanning optical path led to the f.theta lenses deflected by the deflection device, and the light source optical path is arranged on one side across the plane drawn by the optical axis of the scanning optical path, and the plate-shaped bracket of the f.theta lens is arranged on the other side.
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