Production feasibility: Aspherical Cylinder, Toroid, Ellipsoid, Off-axis Asphere, XY polynomials, Standard polynomial, Zernike's polynomial surface.
Natsume Optical Corporation (NOC) accomplishes nanometer precision of the surface accuracy by Ultra-precision grinding/cutting technology and surface correction technology such as Magnetorheological Finishing (MRF). Nanometer Precision is also achieved by interferometrical measurement using the CGH/Double-pass null test and precise 3D profiler (Panasonic - UA3P).
Size: φ20 - 200mm
Achievable accuracy: PVr < λ/20
UA3P (Ultra-precision 3D Profiler: Panasonic)