Annular folded lenses (AFLs) offer high resolution monochromatic imaging in a low telephoto ratio package. Monolithic designs offer advantages but are inflicted with chromatic aberrations. Applying freeform gradient- index media enables more advanced, diffraction-limited monochromatic AFL designs. By optimizing the GRIN profile along with its dispersion, chromatic aberrations can also be corrected, granting high performing poly- chromatic designs.

© (19 November 2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

David H. Lippman, Robert Chou, Ankur X. Desai, Nicholas S. Kochan, Tianyi Yang, Greg R. Schmidt, Julie L. Bentley, and Duncan T. Moore, "Design of annular folded lenses using freeform gradient-index optics," Proc. SPIE 12078, International Optical Design Conference 2021, 120781S (Presented at International Optical Design Conference - IODC 2021: 19 November 2021; Published: 19 November 2021); https://doi.org/10.1117/12.2603679.