Optical arrangement for double-passing Ebert monochromator and for coupling double monochromator systems

摘要

Coupling optics is located in the beam path between intermediate slits S.sub.2 and S.sub.3 of an additive dispersion, double- pass monochromator, for imaging S.sub.2 onto S.sub.3 and for re-imaging an aperture stop back on itself, the stop defined by dispersing means. The slits S.sub.2 and S. sub.3 along with entrance and exit slits S.sub.1 and S.sub.4 may have curvature defining a circle.