title: Theory of concentric designs for grating spectrometers.
abstract: A concentric optical design for a grating spectrometer is described. General aberration theory is given for a family of designs of similar form, showing close similarities with the theory for conventional concentric imagers used in microlithography. Control of stray radiation in the concentric grating spectrometer is discussed.
authors.forename: D R
authors.initials: DR
authors.lastname: Lobb