| 摘要 |
A light-channeling apparatus for a scanning module is provided. The scanning module uses a first light-guiding tube to channel light from a light source to a scanning region and uses a second light-guiding tube to channel light reflected from the scanning region to a light passage slit on the body casing of the scanning module. As a result, very little light from the light source is dispersed and external light is kept out from the transmission pathway.
|
