Refractive telescope design with digital correction of residual chromatic aberrations

Jingang Zhang; Yunfeng Nie; Qiang Fu; Yifan Peng; Shuzhen Wang

doi:10.1117/12.2525358

21 June 2019 Refractive telescope design with digital correction of residual chromatic aberrations

Jingang Zhang, Yunfeng Nie, Qiang Fu, Yifan Peng, Shuzhen Wang

Proceedings Volume 11062, Digital Optical Technologies 2019; 110621E (2019) https://doi.org/10.1117/12.2525358
Event: SPIE Digital Optical Technologies, 2019, Munich, Germany

Abstract

In general, optical designers employ combinations of multiple lenses with extraordinary dispersion materials to correct chromatic aberrations, which usually leads to considerable volume and weight. In this paper, a tailored design scheme that exploits state-of-the-art digital aberration correction algorithms in addition to traditional optics design is investigated. In particular, the proposed method is applied to the design of refractive telescopes by shifting the burden of correcting chromatic aberrations to software. By tailoring the point spread function in primary optical design for one specified wavelength and then enforcing multi-wavelength information transfer in a post-processing step, the uncorrected chromatic aberrations are well mitigated. Accordingly, a telescope of f-8, 1,400mm focal length, and 0.14° field of view is designed with only two lens elements. The image quality of the designed telescope is evaluated by comparing it to the equivalent designs with multiple lenses in a traditional optical design manner, which validates the effectiveness of our design scheme.

Conference Presentation

Citation Download Citation

Jingang Zhang, Yunfeng Nie, Qiang Fu, Yifan Peng, and Shuzhen Wang "Refractive telescope design with digital correction of residual chromatic aberrations", Proc. SPIE 11062, Digital Optical Technologies 2019, 110621E (21 June 2019); https://doi.org/10.1117/12.2525358

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