CFRP mirror with optical quality manufactured by replica technology

Matthias R. Kroedel; Alexander Haberl; Gerald Fuetterer; Benedik Winter; Raimund Foerg; Shin Utsunomiya; Tsuyoshi Ozaki

doi:10.1117/12.3018411

23 August 2024 CFRP mirror with optical quality manufactured by replica technology

Matthias R. Kroedel, Alexander Haberl, Gerald Fuetterer, Benedik Winter, Raimund Foerg, Shin Utsunomiya, Tsuyoshi Ozaki

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130923Z (2024) https://doi.org/10.1117/12.3018411
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

In the frame of an international R&D project, a team from Japan and Germany developed a replica process to manufacture a CFRP honeycomb mirror for visible application. The main target was to generate the optical surface with minimized effort to achieve a microroughness of better (1 – 2) nm RMS. This technology would enable the team to manufacture cost-effective mirrors for larger amounts, like for constellations. In this paper, we will present the recent results of this development and the finally achieved performance of a 300 mm light CFRP mirror. We will also present lessons learned for next steps of development to achieve such mirrors with an optical performance not only for microroughness but also for surface accuracy.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Matthias R. Kroedel, Alexander Haberl, Gerald Fuetterer, Benedik Winter, Raimund Foerg, Shin Utsunomiya, and Tsuyoshi Ozaki "CFRP mirror with optical quality manufactured by replica technology", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130923Z (23 August 2024); https://doi.org/10.1117/12.3018411

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