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Dominant wavelength sensitivity of thin-film color filters to spectral centering

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Abstract

The dominant wavelength shift of 16 color filters is presented for a ±1% theoretical change in spectral centering and compared with the threshold-perceived color difference (dominant wavelength). The resulting change in dominant wavelength exceeds a threshold limit of a just-noticed color difference for some filters. Spectral-centering tolerance limits are given for the dominant wavelength to be at the threshold limit. The change in dominant wavelength is also presented from normal incidence to 60° angle of incidence, with incidence-angle limits and corresponding f-numbers for optical systems. For comparison, the color difference ΔEuv*, from the L*u*v* color space, is calculated for each filter for ±1% spectral centering.

© 1996 Optical Society of America

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