Two-dimensional colorimeter

Details Two-dimensional colorimeter Two-dimensional colorimeter

1994-01-05

1995-07-11

Evans, F. L.

Optics: measuring and testing

By shade or color

Tristimulus examination

356418, 356419, G01J 351

Patent

active

054326095

ABSTRACT:
A two-dimensional colorimeter focuses light through a beam splitter onto a rotary filter so that a first light receiving element can receive light from multiple points on a sample. A rotating filter can provide multiple measurements based upon different wavelengths of light. A portion of the light from the beam splitter also contacts a spectral sensor which separates the light from a particular point into primary wavelength elements which are converted into electrical signals. Based upon these primary wavelength elements, the first signals from the light receiving element are corrected. As a result, the measurement of chromaticity of multiple points on a sample can be performed accurately using a device of simple construction.

REFERENCES:
patent: 5033821 (1991-07-01), Hama et al.
patent: 5175697 (1992-12-01), Kawagoe et al.

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