lateral chromatic aberration

Aberration resulting from dispersion of different wavelengths by a lens. Different colors of light originating from a common point in the sample and removed from the optic axis will be focused at different points in the lateral (XY) directions in the image.

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Chromatic Aberration

Chromatic aberrations are wavelength-dependent artifacts that occur because the refractive index of every optical glass formulation varies with wavelength. When white light passes through a simple or complex lens system, the component wavelengths are refracted according to their frequency. In most glasses, the refractive index is greater for shorter (blue) wavelengths and changes at a more rapid rate as the wavelength is decreased.