Patent ID: 6054707
Filing Date: 2000-04-25
Classification: H04N

Abstract:
A portable scanner for optically converting a scanning object to an image thereof, said scanner comprising:an image sensor;a front illumination source, said front illumination source providing front illumination to said scanning object when said scanning object is opaque;a back illumination source, said back illumination source providing back illumination to said scanning object when said scanning object is transparent;an optical lens system mounted in front of said image sensor; said scanning object provided in a same scanning passage, regardless of being opaque or transparent, in front of the optical lens;wherein said optical lens system collects reflected lights from said opaque scanning object and focuses said reflected lights onto said image sensor so that said image of said opaque scanning object is generated; andwherein said optical lens system collects transmitted lights from said transparent scanning object and focuses said transmitted lights onto said image sensor so that said image of said transparent scanning object is generated.