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Melles Griot Increases Optics Group Polishing Capability

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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 article

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    Published: February 2004
    industrialNews & Features

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