Optimizing reflective systems using aspheric and freeform surfaces

Ian B. Murray

doi:10.1117/12.2288126

27 November 2017 Optimizing reflective systems using aspheric and freeform surfaces

Ian B. Murray

Proceedings Volume 10590, International Optical Design Conference 2017; 105900T (2017) https://doi.org/10.1117/12.2288126
Event: International Optical Design Conference - IODC 2017, 2017, Denver, United States

Abstract

The large number of surface types that are manufacturable today provide many available paths to the optical designer. It is not always clear which path provides the optimal balance of merit function complexity, convergence speed, and image quality after optimization. This paper shows that Q-type polynomials provide a strong benefit in both convergence speed and image quality after optimization when the footprint comprises a large portion of the area inside the normalization radius, but for off-axis systems with large decenters this benefit is weakened. Also, the sensitivity of several unobscured reflective designs is compared to show that although surface types with more degrees of freedom can reduce some sensitivities, the design form is the primary driver and a system that occupies a smaller volume will tend to have higher sensitivities to misalignments regardless of surface type.

Citation Download Citation

Ian B. Murray "Optimizing reflective systems using aspheric and freeform surfaces", Proc. SPIE 10590, International Optical Design Conference 2017, 105900T (27 November 2017); https://doi.org/10.1117/12.2288126

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