The Design of Optical Systems with Extended Depth of Focus

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Abstract
The SLAMS Version 14 optimization programme was modified to include geometrical MTF values, in two defocused image planes, in the merit function. This programme was successfully used in the design of lenses for office copying machines. In such cases, a major effort is made to extend the focal depth maintaining a given MTF value. Conventional methods which minimize the aberrations in a single image plane may be less adequate under those circumstances.

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