Roadmap for the unobscured three-mirror freeform design space

  • Bauer A
  • Rolland J
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Abstract

In rotationally symmetric lens design, there are rule-of-thumb boundaries on field-of-view and aperture for well-known design forms that provide valuable information to the designer prior to starting a design. In the design space of unobscured three-mirror imagers, freeform optics have been shown to provide a significant benefit over conventional surface shapes, but the degree to which they improve the performance for any given combination of field-of-view, entrance pupil diameter, and F-number remains unknown. Thus, designers of these systems are not afforded any pre-design information to inform their specification decisions. Here, we designed over 200 systems to establish a first-of-its-kind roadmap of specification ranges over which an unobscured three-mirror imager using freeform surfaces can achieve diffraction-limited performance in the visible spectrum. The scalability of the findings to the infrared regions of the spectrum is also addressed.

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CITATION STYLE

APA

Bauer, A., & Rolland, J. P. (2021). Roadmap for the unobscured three-mirror freeform design space. Optics Express, 29(17), 26736. https://doi.org/10.1364/oe.433643

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