초록 ▼

Scanners disclosed in the present invention uses a dual-illumination system comprising a front illumination source and a back illumination source. The front illumination source is controlled to illuminate a scanning object when the scanning object is opaque. The back illumination illuminates a scann

Scanners disclosed in the present invention uses a dual-illumination system comprising a front illumination source and a back illumination source. The front illumination source is controlled to illuminate a scanning object when the scanning object is opaque. The back illumination illuminates a scanning object when the scanning object is transparent. An optical system collects lights reflected from the opaque scanning object illuminate by the front illumination source or transmitted through the transparent scanning object illuminated by the back illumination source and focuses the lights upon an image sensor, thereby an image of either the opaque scanning object or the transparent scanning object can be obtained.

대표청구항 ▼

[ What is claimed is:] [1.] 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;

[ What is claimed is:] [1.] 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.