Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry Article Swipe

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Yan Xin , Zhuang, Zhi-Kang , Du, Fu-Jia , Duan Wen , Yin Peilin , Yu, Mo-Nong , Yang Guang ·

YOU? · · 2025 · Open Access ·

Reflective membrane mirrors provide a lightweight, low-cost alternative to traditional optics for next-generation large-aperture telescopes, but their non-rigid, thin structure poses challenges for surface metrology. We present a phase-measuring deflectometry (PMD) system enhanced with tailored ray-tracing and iterative reconstruction to enable non-contact measurement of large membrane optics. The system successfully characterizes the surface figure and evaluates the dynamic stability of a 1-meter Hencky-type membrane mirror. Our results demonstrate the effectiveness of PMD as a practical metrology tool for future membrane-based telescope systems.

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Metrology Optics Surface metrology Surface (topology) Materials science Stability (learning theory) Active optics Membrane Reflective surfaces Dimensional metrology Computer science Telescope Phase unwrapping Reflectivity Reflecting telescope System of measurement Optoelectronics Deformable mirror Surface finishing X-ray optics Curved mirror Profilometer

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Type: article
Landing Page: http://arxiv.org/abs/2511.11049
PDF: https://arxiv.org/pdf/2511.11049
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OpenAlex ID: https://openalex.org/W7105979437

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Title: Surface figure metrology for reflective membrane mirrors based on phase-measuring deflectometry

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Publication year: 2025

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Publication date: 2025-11-14

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Authors: Yan Xin, Zhuang, Zhi-Kang, Du, Fu-Jia, Duan Wen, Yin Peilin, Yu, Mo-Nong, Yang Guang

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Landing page: https://arxiv.org/abs/2511.11049

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Concepts: Metrology, Optics, Surface metrology, Surface (topology), Materials science, Stability (learning theory), Active optics, Membrane, Reflective surfaces, Dimensional metrology, Computer science, Telescope, Phase unwrapping, Reflectivity, Reflecting telescope, System of measurement, Optoelectronics, Deformable mirror, Surface finishing, X-ray optics, Curved mirror, Profilometer

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