What exact kind of metrology does Edmund Optics use to support its asphere manufacturing?

Edmund Optics utilizes a wide range of metrology to support our asphere manufacturing including Talysurf PGI 1240 profilometers, QED ASI aspheric stitching interferometers, Zygo® NewView white light interferometers, OptiPro UltraSurf 4X 100 non-contact profilometers, TRIOPTICS Opticentric® centering machines, Zeiss Contura G2 coordinate measuring machines (CMMs), Olympus MX51 microscopes, design-specific computer-generated holograms (CGHs), and null lenses.