作者: Wesley A. Traub
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摘要: A new spectrometer design is presented in which the angular dispersion with respect to wave number nearly constant. The a type of grism, series combination grating and prism, constant parts terms add one another but slopes dispersions tend cancel another. systematic method for optimizing prism parameters. Expressions are given blaze efficiency effective groove width transmission generalized triangular grooves. cross-dispersion technique presented, eliminating overlapping orders. example visible region from 0.45 0.80 μm essentially wave-number peak approximately 95%. This grism well suited measuring channeled spectra as generated by an optical stellar interferometer.