Mr. Feicheng Wang Profile

Feicheng Wang

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Proceedings Article | 15 February 2022 Paper

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, 1216652 (2022) https://doi.org/10.1117/12.2617418

KEYWORDS: Adhesives, Prisms, Epoxies, Mirrors, Reliability, Optical components, Finite element methods, Spectrometers, Error analysis, Titanium

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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.

Proceedings Article | 24 November 2021 Paper

Research progress and core technologies of optical-mechanical system based on additive manufacturing

Xinyin Jia, Bingliang Hu, Feicheng Wang, Siyuan Li, Lijun Sun, Junqiang Wu

Proceedings Volume 12060, 120601D (2021) https://doi.org/10.1117/12.2606752

KEYWORDS: Additive manufacturing, Optics manufacturing, Surface finishing, Diamond turning

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The research on optical-mechanical system based on additive manufacturing is based on additive manufacturing, diamond turning, high-precision magnetorheological polishing, surface modification technology, internal lattice structure topology optimization and so on. It can overcome the problems of adhesive use and material matching in the traditional structure design, greatly reduce the difficulty of assembly and thermal control, and realize the lightweight design of internal structure that can not be realized by traditional processing methods. In addition, because the mirror body and its supporting structure are made of same metal materials and integrated, the strength and stiffness are greatly improved compared with the traditional design method. This paper summarizes the development status and technical parameters of additive manufacturing opto-mechanical system at home and abroad. The research progress of surface modification technology by domestic and foreign scholars was focused and the post-processing process and core technologies of the optical-mechanical system were described.

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