To evaluate performance of only an optical system even to a lens on the premise of restoration processing of an aberration addition type by using a versatile method similarly to an ordinary imaging optical system, in a method and a device for evaluating the lens on the premise of restoration processing.

The evaluation device of the lens on the premise of restoration processing, manufactured actually based on a design on the premise of restoration processing, is used in an image forming system for performing restoration processing to acquired a clear image after converting an optical image into an electronic image. The evaluation device 10 includes a correction optical system 2 for evaluation for forming a clearer optical image by being combined with a designed lens, a measuring means 5 for measuring an optical characteristic of a synthesized optical system 4 formed by combining the correction optical system 2 for evaluation with a manufactured lens (test lens 3), and an evaluation means 6 for evaluating the manufactured lens based on measurement results.