Design results for a set of thin film color-scanning filters

Accurate scanning of a color image, which is absolutely essential for good colour reproduction, depends upon the creation of a set of filters matched to the optical system of the scanner. Previous work developed a measure of goodness for a set of color filters. The measure provides an optimization criterion which can be maximized to obtain optimal scanning filters of arbitrary spectral shapes. This paper reports on the results of fabricating and testing filters designed by this method. The results show that the filters can be fabricated accurately enough to produce increased accuracy in color measurement over existing filters.