Development in the fabrication techniques of aspheric surface is reviewed. While there is almost no problem in the fabrication of low-accuracy aspheric surface such as condensers and ophthalmic lenses, mass production of high-accuracy aspheric surface is still very difficult. The production of aspheric surface has to be studied as a synthesized technique of optical design, fabrication and test. Here is mainly described the fabrication process. A number of fabrication methods have been proposed. According to their working principles, these are classified into 13 groups; drum method, cam following method, link method, numerical control nethod, thermal sagging method, vacuum sagging method, vacuum evaporating method and others. For a given aspheric surface a method should be emploied in view of its accuracy, cost, capacity, etc. A process to mass-produce high-accuracy aspheric surface is discussed.
