Spectral apparatus of the concentric type having a fery prism

Details Spectral apparatus of the concentric type having a fery prism Spectral apparatus of the concentric type having a fery prism

1996-10-15

1998-07-14

Hantis, K.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01J 328

Patent

active

057812900

ABSTRACT:
The conventional grating is substituted by one or more curved prisms in a concentric spectrometer of the type derived from the Offner mirror objective. The curved prisms are known as Fery prisms. The deviations from the concentric form are used as a corrective device. The spectral apparatus is especially suited as an imaging spectrometer having a detector array because the two-dimensional image can be formed in the direction of the spatial coordinate as well as the spectral coordinate without distortions and curvatures.

REFERENCES:
patent: 1007346 (1911-10-01), Fery
patent: 2594334 (1952-04-01), Miller
patent: 2874608 (1959-02-01), Beloian
patent: 5127728 (1992-07-01), Warren et al.
"Theory of concentric designs for grating spectrometers" by D. R. Lobb, Applied Optics, vol. 33, No. 13, May 1994, pp. 2648 to 2658.
"Die Anwendung von aplanatischen Prismen in Monochromatoren und Spektrographen" by R. N. Wilson, Optik, vol. 29, 1969, pp. 17 to 29.

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