Double monochrometer

Details Double monochrometer Double monochrometer

1982-11-16

1985-11-19

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

356318, G01J 318

Patent

active

045538409

ABSTRACT:
A double monochrometer comprises a main monochrometer including a plane grating and an auxiliary monochrometer including a concave grating. The concave grating is disposed on the entrance or exit optical axis of the main monochrometer. Preferably, the angular dispersion of the concave grating is selected to be smaller than that of the plane grating. Sine bars for rotating the concave and plane gratings for wavelength scanning can be driven by means of a single feed screw mechanism even if the lengths of the sine bars are made different from each other in accordance with a difference in angular dispersion between the concave and plane gratings.

REFERENCES:
patent: 3098408 (1963-07-01), Cary
patent: 3664742 (1972-05-01), Witte et al.
patent: 4068954 (1978-01-01), Da Silva
patent: 4326802 (1982-04-01), Smith, Jr. et al.

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