Abstract: | A displacement interferometer is described for measuring gauge blocks, in which a spatial filter is used to combine a laser
beam with a white-light beam, and the length of the block is calculated from the phase differences of the laser signal corresponding
to the centers of gravity of the achromatic fringes from the gauge and from the reference plate.
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Translated from Izmeritel’naya Tekhnika, No. 9, pp. 3–5, September, 2006. |