3. The apparatus of claim 1 further comprising: an upper portion and a lower portion to define an area of travel for the document; and, the optical system being located in the lower portion and further having said second pair of mirrors located in the upper portion to direct the image from the other side of the document to an aperture orthogonal to the document path.
3. The apparatus of claim 1 further comprising: an upper portion and a lower portion to define an area of travel for the document; and, the optical system being located in the lower portion and further having said second pair of mirrors located in the upper portion to direct the image from the other side of the document to an aperture orthogonal to the document path. 4. The apparatus of claim 3 wherein the lens is oriented with its optical axis generally orthogonal to the direction of movement of the document through the optical system.