| 摘要 |
A laser scanning unit and an image-forming apparatus employing the laser scanning unit. The laser scanning unit includes an optical source to irradiate a light beam, a deflector to deflect the irradiated light beam to a photosensitive body, an optical imaging device on which the light beam deflected from the deflector is incident and which forms an image on the photosensitive body, and an optical reflective device to deflect the light beam transmitted through the optical imaging device toward the optical imaging device, wherein the light beam incident on the optical imaging device includes P polarized light and S polarized light, such that the proportion of P polarized light is greater than the proportion of S polarized light.
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