Novel spectrophotometer for the measurement of color and appearance

A new spectrophotometer design permits simultaneous measurement of color and surface appearance attributes of reflecting specimens. The new design provides a multi-channel spectrometer that is simple, compact, light, and inexpensive, while having a unique combination of features and performance. Novel d/8 degrees geometry provides new capabilities. With a single quick measurement, the instrument measures color and several other appearance attributes. A concentric optical configuration used for the spectrometer eliminates third-order optical aberrations. The optical design and unique features are described and performance data are presented. (C) 1999 Published by Elsevier Science B.V. All rights reserved.