Spectrograph with an Elliptical Mirror
The invention relates to a spectrograph comprising a means (3) for focussing radiation emitted by a sample illuminated by a source of radiation, and a means (4) for diffracting the focussed radiation, in which, according to the invention, the diffraction means includes a flat diffraction network with a variable pitch, and the focussing means includes an elliptical mirror, the sample being placed in one of the focal points (F1) of an ellipsoid surface defining the elliptical mirror.
CHIUZBAIAN GHEORGHE SORIN [FR]; HAGUE CORYN FRANK [FR]
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