| 主权项 |
1. A continuous scanning module comprising:
a polygonal scanning drum rotating around a respective rotation axis at substantially constant speed and provided with a plurality of first reflecting side faces, wherein at least one polygonal forward motion compensation drum is associated with said scanning drum said at least one polygonal forward motion compensation drum rotating around a respective rotation axis parallel to the rotation axis of the polygonal scanning drum, synchronously with the scanning drum at an angular speed substantially equal to that of the polygonal scanning drum and in a same direction, wherein said at least one polygonal forward motion compensation drum is provided with second reflecting side faces, each of said second reflecting sides receiving an image from a corresponding first reflecting face of said polygonal scanning drum and reflecting said image towards a scanning path, wherein the first reflecting side faces of said polygonal scanning drum have different dimensions in a direction orthogonal to the rotation axis of the polygonal scanning drum, to acquire, in subsequent time intervals, images of different portions of a field of view, wherein motion of the at least one polygonal forward motion compensation drum compensates image forward motion due to rotation of the polygonal scanning drum during an image integration time of each portion of the field of view. |
