Patent ID: 6850347

Claim:
A scanning module comprising: a light source configured to illuminate a document to be scanned; a pair of mirrors comprising a first mirror to which light reflected by the document is incident and a second mirror positioned substantially parallel to and spaced by a preselected distance from said first mirror, said pair of mirrors reflecting said light a plurality of times therebetween and then outputting said light as light reflected from said first mirror; a third mirror configured to reflect the reflected light from said pair of mirror away from said pair of mirrors in substantially parallel to the document; a fourth mirror configured to reflect the light incident from said third mirror toward a lens in a direction substantially opposite to a direction in which said light is reflected from said pair of mirrors to said third mirror; a fifth mirror configured to reflect the light incident from the lens in a direction substantially opposite to a direction in which said light is reflected from said third mirror to said fourth mirror; and a linear sensor spaced from said fifth mirror by a preselected distance such that the light passed through the lens is focused on said linear sensor; wherein said pair of mirrors are adjustable in position on a path extending from the document to said first mirror while maintaining a positional relation between said first mirror and said second mirror.