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Pattern edge color difference in a color image sensor with a GRIN rod lens

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Abstract

The color distortion arising around pattern edges of pictures scanned by a color image sensor using a GRIN rod lens is simulated by a model that uses a Gaussian distribution function as the spread function of the lens for two color separation systems. In the time division system, the maximum permissible ΔHB which indicates color aberration is obtained. Although this value depends on some sensor parameters, such as pixel size and pixel period, the method to obtain the maximum permissible ΔHB presented in this paper is suitable in almost all cases. In the space division system, the effect of color aberration on color distortion is clarified, and it is seen that permissible color aberration is larger than that in the time division systems.

© 1990 Optical Society of America

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