Relative luminosity generated by the colours of the CRT

Abstract

This paper describes a computer-controlled method presented on a CRT, which is capable of defining the relative luminosity generated by the primary colors of the monitor. The relative luminance ratio of the different primary colors of the monitor generating the same luminance sensation has been identified. The method is based on heterochromatic photometry. Theoretical calculation of the luminosity generated by the primary colors is also presented in the paper. Analysis shows little difference between theoretical calculation results and actual measurement data. An interesting byproduct of the theoretical calculation is that the additive mixture of the equal luminosity primary colors results to purple colour rather than white. At the end the feasibility of a color vision test based on individual luminance sensation compensation and carried out on a computer-controlled color CRT is discussed.