Abstract
Two measurements performed on rough surfaced objects are described in this paper. The first sample is a mechanical component with a rather difficult accessible surface to be measured. A two-wavelength krypton laser interferometer with an effective wavelength of 36.47 μm has been used. The second example is a convex surface of a ground lens. Here a mode hopping diode laser interferometer with an effective wavelength of 2·020 mm has been used.
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