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See Chinese contents: GB/T 7962.2-2010 GB/T 7962.2-2010: Test methods of colourless optical glass -- Part 2: Optical homogeneity -- Fizeau plano-interferometry
This Part of GB/T 7962 specifies the test methods, test procedures, data processing for the optical homogeneity of colorless optical glass. This Part applies to the test of the optical homogeneity of colorless optical glass, whose diameter or side length is greater than 100 mm AND thickness is not less than 40 mm.
