Dynamic-aperture fringe discriminator is simple device enhancing operation of interferometer of spherical-wave-front type used to test lenses, telescopes, and other optical instruments. Device suppresses reflections from surfaces of refractive optical elements in instrument and/or test setup. Reflections from refractive optical components eliminated by blocking half of interferometer aperture.
Suppressing Spurious Reflections In An Interferometer
NASA Tech Briefs ; 17 , 3
1993-03-01
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Englisch
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