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29 December 2023 Numerical simulation prediction of gas trapping in aspheric lens molding based on Coupled Eulerian-Lagrangian method
Zhikang Zhou, Tianfeng Zhou, Zihao Zeng, Ziwei Li, Shufan Lian, Xibin Wang
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Proceedings Volume 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023); 1297607 (2023) https://doi.org/10.1117/12.3000487
Event: 8th Asia Pacific Conference on Optics Manufacture & 3rd International Forum of Young Scientists on Advanced Optical Manufacturing, 2023, Shenzhen, China
Abstract
Numerical simulation of glass molding and research on material viscoelastic have become increasingly important with the deepening of glass molding research for optical devices. In this study, we developed an accurate and efficient numerical simulation method for the glass aspherical lens molding process. According to the FEM simulation results of aspheric lens molding, gas trapping occurred in the molding of preforms of size 5 mm, which was consistent with the experimental results. The molded lens was tested by profilometer and a gas trapping area of about 3 microns deep and hundreds of microns wide existed at the top of the lens, which was also consistent with the FEM analysis results. The consistency of the FEM predicted results with the experimental results illustrated that the Coupled Eulerian-Lagrangian (CEL) method can be used for the prediction of the gas trapping phenomenon in aspheric lens molding. This study provides a reference for the numerical simulation and process optimization of the glass molding of optical device
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Zhikang Zhou, Tianfeng Zhou, Zihao Zeng, Ziwei Li, Shufan Lian, and Xibin Wang "Numerical simulation prediction of gas trapping in aspheric lens molding based on Coupled Eulerian-Lagrangian method", Proc. SPIE 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023), 1297607 (29 December 2023); https://doi.org/10.1117/12.3000487
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KEYWORDS
Glasses
Glass molding
Aspheric lenses
Finite element methods
Numerical simulations
Precision glass molding
Modeling
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