Patent ID: 8482813
Filing Date: 2013-07-09
Classification: G02B,G03B,H04N

Abstract:
1. An image-scanning device characterized by comprising: an illuminating device configured to illuminate an object being picked up which corresponds to an imaging target; a plurality of image-forming optical systems configured to form images of the object being picked up; an image pickup device configured to be located so as to correspond to the image-forming optical systems and to pickup the formed images; and an image processing device configured to restore an original object being picked up from the images obtained by the image pickup device, wherein the plurality of image-forming optical systems are arranged to be adjacent to each other in a main scanning direction with respect to the object being picked up, and form images of the object being picked up such that the object being picked up is inverted and reduced in size, each of the image-forming optical systems includes a first optical element having a first focal length; an aperture member located at a focus position in a rear side of the first optical element; and a second optical element provided in a rear side of the aperture member and having a second focal length shorter than the first focal length, the first optical element, the aperture member, and the second optical element being disposed from a side of the object being picked up to a side of the image pickup device, and in between two image-forming optical systems arranged to be adjacent to each other, the image pickup device includes a region in which the images picked up by the image pickup device are overlapped.