Design of a built-in baffle for a Ritchey-Chretien optical system

Lin Sun; Qingfeng Cui; Yang Hu

doi:10.1117/12.2576472

5 November 2020 Design of a built-in baffle for a Ritchey-Chretien optical system

Lin Sun, Qingfeng Cui, Yang Hu

Proceedings Volume 11565, AOPC 2020: Display Technology; Photonic MEMS, THz MEMS, and Metamaterials; and AI in Optics and Photonics; 115650O (2020) https://doi.org/10.1117/12.2576472
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

A baffle effectively prevents direct rays of stray light from entering an optical system. Existing design methods can result in very long outer baffle lengths, increasing the weight and volume of the optical system, or large secondary mirror baffle sizes, increasing the central obscuration and resulting in the reduction of the illumination beam on the image. To overcome these challenges, a design method for a built-in baffle is presented. The designed built-in baffle for a typical Ritchey-Chretien optical system is compared with a conventionally designed baffle. The resulting optical system’s outer baffle length is shortened, the central obscuration is reduced, and the stray light suppression capability is good.

Citation Download Citation

Lin Sun, Qingfeng Cui, and Yang Hu "Design of a built-in baffle for a Ritchey-Chretien optical system", Proc. SPIE 11565, AOPC 2020: Display Technology; Photonic MEMS, THz MEMS, and Metamaterials; and AI in Optics and Photonics, 115650O (5 November 2020); https://doi.org/10.1117/12.2576472

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