Abstract

The distortion introduced in the image by a lens for a given axial inclination of the chief ray is a linear function of the magnification. Specifically, if D0 represents the distortion with parallel light incident on one side of the lens (zero magnification) and D∞ the distortion with parallel light incident on the other, then the distortion Dm at any magnification m is given by: Dm=D0−mD∞. This equation has been experimentally verified for examples of three types of symmetrical lenses.

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