18 December 2014 Non-isothermal molding technology research of ultra-precision glass lens
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This paper aims to research a unique non-isothermal molding technology (NGMP) which is an attractive and creative manufacturing method of fabricating ultra-precision and high-quality glass components. It has numerous advantages such as high efficiency, low cost and being mass production of glass lenses in industry. This technology is an ultra precision manufacturing process and suitable for multi-scale precision glass lens, lens array and glass micro-structure. This technology overcomes the disadvantages of traditional grinding and polishing technology such as long time production cycle, profligacy of raw materials, single-piece production and difficulty to produce an aspherical lens or arrays. The characteristics of NGMP are studied by comparing with the traditional IGMP. Residual stresses inside the glass lenses are also studied by numerical simulation. Based on the experiments and simulations results, a new compression molding process is proposed. Once the glass lens is fabricated by compression molding, an annealing process can be used to reduce the residual stresses in the glass lens.
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Hongbin Zang, Hongbin Zang, Jiaxin Yu, Jiaxin Yu, Yingyue Zhou, Yingyue Zhou, Bo Tao, Bo Tao, "Non-isothermal molding technology research of ultra-precision glass lens", Proc. SPIE 9295, International Symposium on Optoelectronic Technology and Application 2014: Laser Materials Processing; and Micro/Nano Technologies, 929517 (18 December 2014); doi: 10.1117/12.2073136; https://doi.org/10.1117/12.2073136

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