Analysis and experiment of gravity deformation for large aperture rectangular mirror set

De-yi, 董得义 Dong; Zhi-lai, 李志来 Li; Dong-lin, 薛栋林 Xue; Xue-jun, 张学军 Zhang; Yan-chao, 樊延超 Fan; Xin-yuan, 庞新源 Pang

doi:10.3788/ope.20162406.1424

光学精密工程

2016

DOI: 10.3788/ope.20162406.1424

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Analysis and experiment of gravity deformation for large aperture rectangular mirror set

董得义 Dong De-yi¹,

李志来 Li Zhi-lai²,

薛栋林 Xue Dong-lin³

et al.

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2024

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Measurement for compensating for self-weight deformation error of large-aperture flat under vertical support

Wang,

Han,

Wang

et al. 2024

Appl. Opt.

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Space optical components undergo surface deformation due to gravitational effects during ground assembly, introducing unnecessary gravity deformation errors, especially for large-aperture components. In this context, we propose a four-step rotation measurement method, in which the 600 mm diameter flat with the reflective surface vertically supported is rotated by 0°, 90°, 180°, and 270° in turn. The results are then reset and superimposed to obtain the surface shape result, thereby eliminating the gravity error. The experimental results show that the PV value is reduced by 52.23% and the RMS value is reduced by 46.42%, as verified by finite element simulation. This method compensates for the limitations of the traditional flipping method, significantly improving test efficiency, and is expected to overcome the technical challenges of precision measurement of large-aperture components in space.

show abstract

Measurement for compensating for self-weight deformation error of large-aperture flat under vertical support

Wang,

Han,

Wang

et al. 2024

Appl. Opt.

View full text Add to dashboard Cite

show abstract

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Analysis and experiment of gravity deformation for large aperture rectangular mirror set

Cited by 1 publication

References 0 publications

Measurement for compensating for self-weight deformation error of large-aperture flat under vertical support

Measurement for compensating for self-weight deformation error of large-aperture flat under vertical support

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