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Use of Expendable Aspherics to Improve the Convergence of Iterative Lens Design

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Abstract

The principal problem in iterative lens design methods is the requirement to find paths in multidimensional parameter space between where you are and where you would like to be. There are no restrictions on the tricks that may be employed to seek out useful paths and one method that may be used to improve the navigational process is to employ aspheric surfaces as a temporal expedient and to treat the aspheric coefficients as aberrations. The application of this method to a specific case is given and the value of the method for more general use is discussed.

© 1994 Optical Society of America

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