The usual optimization methods in optical design like those available in CodeV and Zemax, while powerful, are very dependent of the starting system and the chosen merit function. Moreover the number of lenses is by the way defined. We present a novel global optimization approach employing saddle point construction that overcomes these limitations. This method facilitates the systematic exploration of design space by adding constructively new lens, leading to innovative, high-performance optical solutions. As study case we consider a wide-angle eyepiece with six lenses. Our findings retrieve the solutions obtained by CodeV global optimizer and a few more with less lenses. For the moment this optimization approach is limited to on-axis systems with spherical lenses.
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