Imaging system utilizing a gradient index lens array compensated for non-uniform object illumination

An optical imaging system including a plurality of gradient index optical fibers combined into at least a single row to form a linear lens array, said array positioned between an object plane and a photosensitive image plane and adapted so as to transmit, and image, light reflected from an object lying in the object plane onto the image plane said array characterized by being comprised of at least two groups of optical fibers, a first group having identical gradient index value A and fiber radius R parameters, and a second group having at least one parameter value which varies from the parameter value of said first group, the fibers of both groups being distributed throughout the array so as to transmit therethrough a uniform level of said reflected object that resulting in a uniform exposure level at said imaging plane.