Device for color measuring
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United States of America Patent
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-
Aug 3, 1999
Grant Date -
N/A
app pub date -
Oct 15, 1997
filing date -
Feb 4, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A color measuring device measures the light transmitted through the material to be measured as well as the light reflected therefrom and the irradiated light and measures the color reflectivity in the various spectral ranges by dividing the reflected intensity by the difference between the irradiated and transmitted intensity. The calculation of the color reflectivity in the individual spectral ranges is thus corrected to the proper extent without the need to place color tiles behind a transparent material to be measured.
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