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US 6,876,444 B2Granted
Refractometer
AssigneeFranz Schmidt & Haensch GmbH & Co.
InventorsSükrü Yilmaz, Mathis Kuchejda
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Abstract
A refractometer with a measuring prism on whose measuring surface a sample to be tested can be mounted, which sample can be illuminated by a light beam emitted by a source of light under a range of angles that includes a critical angle for total reflection, and with a reciever for recieving the reflected light. An optical device that decomposes the reflected light into a color spectrum that is mounted in the path of the reflected light between the measuring surface and the reciever.
Claims3
A refractometer comprising:
- a light source which emits a beam of white light;
- a measuring prism having a measuring surface on which a sample to be tested can be mounted, said measuring surface being arranged to receive said beam of white light in a range of angles including the critical angle of total reflection so that said measuring prism transmits a reflected light beam along a path;
- an optical device that decomposes the reflected light beam transmitted by said measuring prism into a color spectrum, said optical device being mounted in the path of the reflected light beam;
- and
- a receiver comprising a two-dimensional CCD array which receives said color spectrum, said spectrum producing on the CCD array a light area and a dark area having a border which represents the index of refraction of the sample.
2 more elements
Dependencies are inferred from the claim text.