Patent ID: 8310737
Filing Date: 2012-11-13
Classification: H04N

Abstract:
1. An image reading apparatus comprising: a first light source for emitting first light; a first light guide member for directing the first light emitted from the first light source toward an object to be read as first linear light extending in a primary scanning direction; a second light source for emitting second light of a wavelength different from a wavelength of the first light; a second light guide member for directing the second light emitted from the second light source toward the object as second linear light extending in the primary scanning direction; a plurality of light receiving elements arranged in the primary scanning direction; and a lens unit that causes reflected light of the first linear light from the object to be direct toward the light receiving elements, and also causes reflected light of the second linear light from the object to be directed toward the light receiving elements; wherein the first light guide member and the second light guide member extend in the primary scanning direction in parallel to each other, and the lens unit extends in the primary scanning direction and is positioned between the first and the second light guide members, and wherein each of the first light guide member and the second light guide member includes a first end on one side in the primary scanning direction and a second end on another side in the primary scanning direction, the first light source being arranged on a side of the first end of the first light guide member, the second light source being arranged on a side of the second end of the second light guide member.