| 摘要 |
<p>The light guide plates (10) collect light from several fluorescent tube lamps (11 etc) spaced along the plates with the light emitted from the ends (16) of the plates and directed at the scanning slit. The backs of the plates are mirrored and a fluorescent coating enhances the illumination. The plates can be bent into an enclosed shape to contain the lamps and to prevent stray light from entering the copier. The light is transmitted along the plates by total reflection and provides an intense, uniform illumination for the slit.</p> |
