10 March 1998 Stigmatic image formation by ruled diffraction gratings
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Abstract
A concave spherical ruled diffraction grating with a curved nonequidistant grooves is shown to give a stigmatic image of for the three wavelengths, however, unlike the holographic gratings, the stigmatic wavelengths can be chosen in wide limits. A special stigmatic aspherical ruled grating is proposed.
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Yuri V. Bazhanov, "Stigmatic image formation by ruled diffraction gratings", Proc. SPIE 3348, Optical Information Science and Technology (OIST97): Computer and Holographic Optics and Image Processing, (10 March 1998); doi: 10.1117/12.302485; https://doi.org/10.1117/12.302485
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