Two-dimensional colorimeter

摘要

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.