Design and analysis of bonding process of the space-based rectangular curved prisms

Xinyin Jia; Feicheng Wang; Shanliang Ke; Bingliang Hu; Libo Li; Zhaohui Zhang; Siyuan Li

doi:10.1117/12.2617418

15 February 2022 Design and analysis of bonding process of the space-based rectangular curved prisms

Xinyin Jia, Feicheng Wang, Shanliang Ke, Bingliang Hu, Libo Li, Zhaohui Zhang, Siyuan Li

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 1216652 (2022) https://doi.org/10.1117/12.2617418
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

The curved prisms have been widely used as a light splitting element because of its own focal power and can be set in nonparallel light path. When the effective light transmission area of large-size curved prism is rectangular or elliptical, it can be processed into rectangular optical elements during processing, which can reduce the volume and mass of the instrument on the one hand, and effectively block the stray light outside the field of view on the other hand. Adhesive fixation is one of the common fixation methods of optical elements, which is applied in many launched spaceborne remote sensors. However, the adhesive bonding process and adhesive strength are unstable and the bonding reliability is poor, resulting in the calculated theoretical bonding area and adhesive layer thickness are often difficult to meet the requirements of complex mechanical and thermal environment. The rigid-flexible dual mode coupling support structure for space-based rectangular curved prism was firstly introduced. And then the tensile and shear tests on the epoxy adhesive used in this project was carried out and the bonding area based on the strength test was designed. On this basis, the mechanical test of the simulator mirror group was carried out to verify the reliability of the bonding area and the design of the support structure. Finally, three bonding postures were simulated analysis and tests including prone, lateral and vertical bonding. The results showed that the vertical bonding was the smallest surface shape errors of the curved prism. Based on this bonding attitude, the bonding and mechanical tests of the curved prism were completed to verify the reliability and rationality of the bonding process.

Citation Download Citation

Xinyin Jia, Feicheng Wang, Shanliang Ke, Bingliang Hu, Libo Li, Zhaohui Zhang, and Siyuan Li "Design and analysis of bonding process of the space-based rectangular curved prisms", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 1216652 (15 February 2022); https://doi.org/10.1117/12.2617418

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KEYWORDS

Adhesives

Prisms

Epoxies

Mirrors

Finite element methods

Optical components

Reliability

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