Chalcogenide material strengthening through the lens molding process

2016 ◽  
Author(s):  
J. Nelson ◽  
M. Scordato ◽  
Pierre Lucas ◽  
Garrett J. Coleman
Keyword(s):  
Molding Process ◽  
Chalcogenide Material ◽  
Lens Molding

Application of Orthogonal Test in Numerical Simulation of Glass Lens Molding

2012 ◽  
Vol 497 ◽  
pp. 245-249
Author(s):  
Dao Cheng Zhang ◽  
Ke Jun Zhu ◽  
Yong Jian Zhu ◽  
Shao Hui Yin ◽  
Jian Wu Yu
Keyword(s):  
Process Parameters ◽  
Orthogonal Experiment ◽  
Fem Simulation ◽  
Orthogonal Test ◽  
Test Method ◽  
Testing Time ◽  
Molding Process ◽  
Glass Lens ◽  
Lens Molding ◽  
Process Factors

Glass lens molding is a high-volume fabrication method for producing optical components. In this paper, combined with the orthogonal test method and finite element method (FEM) simulation, the coupled thermo-mechanical analysis was carried out to analyze the key process factors. In order to reduce the testing time, an orthogonal test with three sets of level factors and three parameters is conducted to obtain the optimal molding process parameters. The result shows that the most significant parameter is molding velocity, the other effect parameters are molding temperature and friction coefficient. According to the previous analysis of orthogonal experiment, it is shown that the best optimal finishing process parameters were A2B1C1.

Finite Element Analysis of Glass Lens Molding Process

2013 ◽  
Vol 706-708 ◽  
pp. 1353-1356
Author(s):  
Ling Jiang Ouyang ◽  
Jian Zhang
Keyword(s):  
Finite Element ◽  
Fem Simulation ◽  
High Volume ◽  
Coupled Analysis ◽  
Molding Process ◽  
Element Analysis ◽  
Molding Temperature ◽  
Maximum Residual Stress ◽  
Glass Lens ◽  
Lens Molding

Glass lens molding process is a high-volume fabrication method for producing optical components. In this paper, combined with thermal-mechanical coupled analysis and finite element method (FEM) simulation, An axisymmetric model of the GMP is built. Based on this model, FEM on the basis of the commercial FEM software MSC.Marc is conducted to study the pressing process in glass molding. The effects of molding temperature, pressing velocity, and friction on maximum residual stress are calculated. The result shows that the stress decreases at the higher molding temperature, lower pressing velocity and friction.

Investigation on the viscoelasticity of optical glass in ultraprecision lens molding process

2009 ◽  
Vol 209 (9) ◽  
pp. 4484-4489 ◽  
Author(s):  
Tianfeng Zhou ◽  
Jiwang Yan ◽  
Jun Masuda ◽  
Tsunemoto Kuriyagawa
Keyword(s):  
Optical Glass ◽  
Molding Process ◽  
Lens Molding

Numerical Simulation on Two-Step Isothermal Glass Lens Molding

2010 ◽  
Vol 126-128 ◽  
pp. 564-569 ◽  
Author(s):  
Shao Hui Yin ◽  
Ke Jun Zhu ◽  
Yu Fang Wang ◽  
Feng Jun Chen ◽  
Yu Wang
Keyword(s):  
Residual Stress ◽  
Strain Distribution ◽  
High Efficiency ◽  
Stress And Strain ◽  
Key Factors ◽  
Molding Process ◽  
Element Simulation ◽  
Glass Lens ◽  
Lens Molding ◽  
Stress And Strain Distribution

Glass lens molding is an effective approach to produce precision micro aspheric glass lens at high efficiency. In this paper, a new two-step isothermal glass molding process was proposed. The mechanisms of new molding process were analyzed. Finite element simulation was conducted to analyze the key factors such as the pressing load, die damage, molding time and residual stress of lens during the traditional molding and the two-step isothermal molding. The results showed that the two-step isothermal glass lens molding process may decrease residual stress and improve stress and strain distribution. Furthermore, prolong the service life of die.

813 Loading Optimization of Glass Lens Molding Process

2010 ◽  
Vol 2010.23 (0) ◽  
pp. 387-388
Author(s):  
Shiro Yoshida ◽  
Yukio Kitajima ◽  
Hidekazu Sawae
Keyword(s):  
Molding Process ◽  
Glass Lens ◽  
Lens Molding
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