Patent ID: 8247757

Claim:
A contact image sensor module, comprising: an image sensor; a wedge-shaped glass plate comprising an incident face, a first light interface and a second light interface; a lens unit arranged between the image sensor and the second light interface of the glass plate, the lens unit comprising a holder and a plurality of rod lenses received in the holder; and a light source facing the incident face of the glass plate for radiating light to the glass plate via the incident face, a part of the light travelling out of the glass plate via the first light interface directly, and the other part of the light reflected by the second light interface and then travelling out of the glass plate via the first light interface; wherein the first light interface of the glass plate is substantially parallel to a top face of the holder of the lens unit, the second light interface is oriented slantwise to and extends away from a first side of the first light interface, and the light incident face is oriented slantwise to and extends away from an opposite second side of the first light interface and connects to the second light interface.