Optical path structure of double-sided document scanner

Abstract

The present invention provides an optical path structure of a double-sided document scanner, which comprises a first light source, a second light source, a first reflecting mirror set, a second reflecting mirror set, a lens, and a photo-sensor. The first and second light sources have a document conveyance path formed between them. The first reflecting mirror set reflects light reflected from a front face of a document toward a proper direction. The second reflecting mirror reflects light reflected from a back face of the document toward a proper direction. Lights generated by the first and second light sources can be respectively projected onto the front and back faces of the document. Lights reflected from the front and back faces of the document are respectively reflected by the first and second reflecting mirror sets and then enter the lens to be focused onto the photo-sensor.

Dependencies are inferred from the claim text.