Patent ID: 7633656
Filing Date: 2009-12-15
Classification: G02B,H04N

Abstract:
1. An image reading unit comprising: a first optical component that collects reflected light from a reflective original that reflects light, the reflective original being disposed on one side of the image reading unit; a first photoelectric conversion element device that reads an image of the reflective original based on the reflected light collected by said first optical component; a second optical component that collects light transmitted through a transparent original that transmits light, the transparent original being disposed on the one side of the image reading unit and at a position different from the reflective original; a second photoelectric conversion element device that reads an image of the transparent original based on the transmitted light collected by said second optical component; a first substrate on which said first photoelectric conversion element device is mounted; and a second substrate on which said second photoelectric conversion element device is mounted, wherein said first substrate and said second substrate are disposed separately, and said first photoelectric conversion element device and said second photoelectric conversion element device are disposed on different planes on a same side from the reflective or transparent original, wherein said first optical component and said second optical components are disposed on the same side from the reflective or transparent original, wherein said first optical component is adjustable so as to obtain a focal position that is suitable for a position in which the reflective original is placed, and said second optical component is adjustable so as to obtain a focal position that is suitable for a position in which the transparent original is placed, and wherein the first substrate and the second substrate are disposed with a height difference therebetween, the height difference being settable to an arbitrary difference.