Ms. Xinyue Zeng Profile

Xinyue Zeng

at Soochow Univ

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Proceedings Article | 21 December 2022 Poster + Paper

Aspheric surface design based on compensation detection principle

Xinyue Zeng, Tao Ma, Tingting Huang

Proceedings Volume 12315, 123151H (2022) https://doi.org/10.1117/12.2643385

KEYWORDS: Aspheric lenses, Mirrors, Imaging systems, Optical design, Mid-IR, Optical imaging, Optical fabrication

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Usually, a polynomial expansion of the deviation from a conic equation was used for describing a rotationally symmetric aspheric surface, which is also the data basis for the technology formulating of subsequent fabricating and testing. The degree of the surface asphericity is mathematically determined. But the parameters of the expansion provide little information about the aspheric shape measurement, even small differences of which can result in dramatic differences of the difficulty of fabricating and testing. For the process of aspheric surface designing, fabricating and testing in an optical system are separately. The testing method originates from the aspheric surface geometry, but the shape testing result can’t be fed back to the optical design. Based on the principle of detection-oriented, a new type of aspheric surface is proposed and characterized by the optical path parameters of its partial null testing. When a new aspheric surface was optimized in the design of an optical system, the measurement optical path of the surface was achieved at the meanwhile. A three-band fusion imaging system is designed with two mirrors of the partial null aspheric surface type. The results show that the imaging quality can meet the resolution of detectors in each band. The PV values of emergent wavefronts of the partial null detection optical paths for each mirror are about 7λ and 12λ, respectively, and the distributions of which are uniform and detectable.

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