Abstract
Two-mirror telescopes possess an agreeable tradeoff between performance and complexity that suits the needs of many scientific tasks, and recent developments in manufacturing technology have enabled unobscured two-mirror designs with freeform surfaces. We illustrate how structural aberration coefficients reveal the fundamental aberration characteristics of such systems and provide a summary table of general solutions that prescribe freeform surface shapes and tilts. Two unobscured design forms with remarkable aberration cancellation, inspired by well-known on-axis anastigmatic solutions, are presented.
| Original language | English (US) |
|---|---|
| Article number | 045104 |
| Journal | Optical Engineering |
| Volume | 63 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 1 2024 |
| Externally published | Yes |
Keywords
- aberration theory
- freeform optics
- lens design
- optical design
- structural aberration coefficients
- unobscured telescopes
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- General Engineering