Patent ID: 8134609

Claim:
An imaging system comprising: an imaging lens; an imaging device that has a light receiving surface on which a plurality of light receiving pixels are two-dimensionally arrayed and that forms first image date based on an optical image of a subject projected onto the light receiving surface through the imaging lens and outputs the first image data corresponding to the subject; a coefficient storage section that will store a restoration coefficient corresponding to a state of a point image, which is projected onto the light receiving surface through the imaging lens and is expressed by the first image data output from the imaging device, when a maximum diameter of an effective region of the point image is equal to or larger than a size of three pixels; and a signal processing section that executes restoration processing on the first image data by using the restoration coefficient, the restoration processing being executed to generate second image data equivalent to the first image data output from the imaging device when the resolving power of the imaging lens is higher, wherein the signal processing section executes the restoration processing in a condition where a pixel region which has size equal to or larger than a size of nine pixels including three or more pixels in a vertical direction and three or more pixels in a horizontal direction on the light receiving surface is set as a minimum unit, and the imaging lens comprises: in order from an object side of the imaging lens, a first lens group which includes at least one lens and has a positive power; and a second lens group which includes at least one lens and in which a lens positioned closest to an image side of the imaging lens has a negative power further comprising: a determination section that determines whether or not the maximum diameter of the effective region is equal to or larger than a size of three pixels, wherein the coefficient storage section will store the restoration coefficient corresponding to the state of the point image when the determination section determines that the maximum diameter of the effective region is equal to or larger than a size of three pixels.