METHOD AND DEVICE FOR MEASURING THE COLOUR AND OTHER PROPERTIES OF A SURFACE
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United States of America Patent
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Issued Date -
Aug 15, 2013
app pub date -
Jul 8, 2011
filing date -
Jul 9, 2010
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Abandoned
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Abstract
The invention relates to a device and method for measuring the properties of a surface. The device comprises means for producing illuminating light, which means are arranged to aim the illuminating light at the surface to be measured using at least two different wavelengths and at least two different angles, as well as means for directing the light reflected or scattered from the surface to a detector, in order to create an image of the surface to be measured. The device according to the invention further comprises at least one reference surface, the contents of which can be placed in the vicinity of the surface to be measured, in such a way that the illuminating light is also aimed at the reference surface and the light reflected or scattered from the reference surface can also be directed to the detector. The invention makes possible excellent measurement precision and repeatability, using a simple device construction with low production costs.
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