Multiple-beam lateral shear interferometry for optical testing

Details Multiple-beam lateral shear interferometry for optical testing Multiple-beam lateral shear interferometry for optical testing

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apopt..34.2864s&link_type=abstract

Applied Optics, Volume 34, Issue 16, June 1, 1995, pp.2864-2870

Physics

Optics

7

Aberration, Interferometry

Scientific paper

Lateral shear interferometry is used to obtain the lateral aberrations of a lens. The zeroth-order fringe in an interferogram obtained from a wedge-plate lateral shear interferometer, however, directly displays the lateral aberration curve of a test lens. Nevertheless, the intensity distribution, is cosinusoidal. Multiple-beam interferometry results in sharpened fringes; hence the multiple-beam wedge-plate shear interferometer displays the lateral aberration curve of a lens sharply, provided the shear is small. For large shear, some new artifacts appear in the interferogram, which are also explained.

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