Cross-disperser
= Cross-disperser
A cross-disperser is a second dispersing element, often an <optical prism> or <diffraction grating>, oriented to separate <optical spectra> perpendicular to their principal dispersion direction.
= Cross-disperser
A cross-disperser is a second dispersing element, often an <optical prism> or <diffraction grating>, oriented to separate <optical spectra> perpendicular to their principal dispersion direction.