ROCHESTER, NY, Feb. 12 -- Melles Griot Optics Group announced it recently commissioned installation of its QED Q22-Y magnetorheological (MRF) finishing system and large-aperture, digital phase-measuring interferometer at its Rochester, N.Y., manufacturing complex, in a new class-10,000 clean facility. The company said the system will enable it to produce spherical surfaces accurate to 1/250 of a wavelength, root-mean-square (rms), at 632 nm, using the "3-sphere" calibration method. The system uses a computer-directed, electromagnetically controlled "ferro-fluid" polishing method to...Read full articleRelated content from Photonics MediaArticlesVirtual Superlens Passes Diffraction Limit Without DistortionThe diffraction limit enforces physical restrictions on how closely an object can be examined using traditional optical methods. 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