Spectrometry device for analyzing polychromatic light
US4571074A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1982 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Dec 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.