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4 April 2023 Bonding design and analysis of splitting prism assembly with RTV silicone rubber
Tan Wang, Weiguo Zhang, Yijie Yuan, Libing Hou, Wenbo Duan, Weidong Huang, Maqiang Wang
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Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126175I (2023) https://doi.org/10.1117/12.2666540
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China
Abstract
Under thermal loading, low stress assembly is one of the key factors to ensure the pointing stability of the splitting prism assembly in a multiband optical mechanical system. By analyzing the common bonding methods of prism assembly, the factors affecting the bonding stability include the transverse stress of multi-point bonding, the internal stress of the adhesive and the longitudinal stress perpendicular to the bonding surface. Then, the optimization methods are proposed, e.g., reducing the span of bonding surface, increasing the free end area of bonding and adding longitudinal constraints. The simulation results show that the variety of all surfaces of the prism is restrained under the temperature load of - 45 ℃ to 60 ℃, the change of surface shape is reduced from 0.381µm to 0.148µm at 60 ℃ and from 0.982µm to 0.553µm at - 45 ℃, which improves the pointing stability of the splitting prism. It’s indicated that this bonding technology can effectively improve the pointing stability of splitting prism and can be applied to the engineering design of the precision optical system.
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Tan Wang, Weiguo Zhang, Yijie Yuan, Libing Hou, Wenbo Duan, Weidong Huang, and Maqiang Wang "Bonding design and analysis of splitting prism assembly with RTV silicone rubber", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126175I (4 April 2023); https://doi.org/10.1117/12.2666540
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KEYWORDS
Prisms
Deformation
Mirrors
Design and modelling
Silicon
Adhesives
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