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Proceedings Paper

Optimizing reflective systems using aspheric and freeform surfaces
Author(s): Ian B. Murray
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Paper 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.

Paper Details

Date Published: 27 November 2017
PDF: 8 pages
Proc. SPIE 10590, International Optical Design Conference 2017, 105900T (27 November 2017); doi: 10.1117/12.2288126
Show Author Affiliations
Ian B. Murray, BAE Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 10590:
International Optical Design Conference 2017
Peter P. Clark; Julius A. Muschaweck; Richard N. Pfisterer; John R. Rogers, Editor(s)

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