Optics: measuring and testing – Infrared and ultraviolet
Patent
1982-12-23
1986-02-18
Evans, F. L.
Optics: measuring and testing
Infrared and ultraviolet
250339, 250372, 356328, G01J 320
Patent
active
045710740
ABSTRACT:
Spectrometry device capable of splitting up, for analysis, polychromatic light, thus yielding a spectrum which extends into the ultraviolet, visible and near infra-red ranges. The device makes it possible to analyze the polychromatic light coming from an excitation source and comprises a polychromator provided with a concave grating, which receives the said polychromatic light through an inlet slit in order to diffract it into monochromatic bundles of the ultraviolet region, directed onto outlet slits that are associated with measuring detectors, the slits and grating being positioned on the Rowland circle, wherein, essentially, the order O bundle, which is symmetrical to the incident bundle, relative to the perpendicular on the grating (23), is taken up by a second optical device which disperses the said bundle into monochromatic bundles of the visible or near infra-red regions, at least one outlet slit (8) selecting one monochromatic bundle, measured by a measuring detector (28). The device is particularly intended for a direct reading emission spectrometry instrument.
REFERENCES:
patent: 4250465 (1981-02-01), Leib
Lagutin, Bull. Crimean Astr. Phys., vol. 60, 1979, pp. 149-153.
Evans F. L.
Instruments S.A.
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