Spectrometric measuring device
AssigneeEndress+Hauser Conducta GMBH+C. KG
InventorsBjörn Haase, Joachim Bolle
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Abstract
The present disclosure includes a spectrometric measuring device for a measurement point of the process automation system, including a broadband light source for radiating light through an entrance aperture onto a sample to be measured, wherein the beam bundles of the light form an irradiation plane, a light limiter that limits the light at an angle to the irradiation plane, whereby a different amount of light results at this angle. The device further includes a dispersive element for separating the light according to its wavelength and a detector for receiving light separated according to its wavelength, wherein the light source beams the light through the sample to the entrance aperture, the light limiter and the dispersive element, and the light strikes the detector.
Claims19
A spectrometric measuring device for a measurement point of a process automation system, the device comprising:
- a broadband light source configured to emit a beam of light along a light path through a sample to be measured and through an entrance aperture, wherein the beam of the light defines an irradiation plane in an X-Y plane;
- a spatial filter disposed along the light path, the spatial filter configured to limit the beam an amount that varies along the Z-axis;
- a prism, mirror or grating configured to separate the light into its wavelengths;
- and
- a detector adapted to receive the light separated into its wavelengths by the prism, mirror or grating, wherein the detector is a two-dimensional detector,
- wherein the light source emits the beam of light through the sample, the entrance aperture, the spatial filter and the prism, mirror or grating, and the light is subsequently incident upon the detector,
- wherein the spatial filter is structured such that a blurred shadow is generated on the X-Y detector area and thereby a varying amount of light on the detector as a function of the Z-coordinate.
Dependencies are inferred from the claim text.