PROBLEM TO BE SOLVED: To provide an aspheric surface processing method, an aspheric surface forming method and an aspheric surface processing apparatus, capable of quickly grinding and cutting a work having a large recess-projection step in a high quality by a simple control method by using a conventional aspheric surface processing apparatus.;SOLUTION: This aspheric surface processing method comprises a workpiece rotating around a rotary shaft, and a rotary tool 214 relatively movable with the work in the same direction as the rotary shaft of the work and the direction orthogonal to the rotary shaft of the work. The rotary tool 214 processes the work in a nonaxial symmetric aspheric surface by moving in the specific direction at a predetermined feed pitch in a partial or whole areas up to an outer peripheral part of the work from the center of the rotary shaft of the work in the direction orthogonal to the rotary shaft of the work.;COPYRIGHT: (C)2005,JPO&NCIPI
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