Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18866
Title: Numerical simulation of residual stress and birefringence in the precision injection molding of plastic microlens arrays
Authors: Weng, C
Lee, WB 
To, S 
Jiang, BY
Keywords: Microlens array
Numerical simulation
Precision injection molding
Residual stress and birefringence
Issue Date: 2009
Publisher: Pergamon Press
Source: International communications in heat and mass transfer, 2009, v. 36, no. 3, p. 213-219 How to cite?
Journal: International communications in heat and mass transfer 
Abstract: Microlens arrays are critical components in the assembly of display devices used in various telecommunication products. The optical quality of these plastic lenses is very sensitive to the presence of residual stress. In this paper the distribution of residual stress and birefringence of these microlens arrays has been investigated. It is found that maximum residual stress always occurs in the regions near the gate. The predicted trends and patterns of the residual stress and birefringence distribution agree well with the experimental results. The effects of six main processing parameters on maximum value of residual stress are studied. The noticeable discrepancy between the simulation and the experimental results are discussed.
URI: http://hdl.handle.net/10397/18866
ISSN: 0735-1933
DOI: 10.1016/j.icheatmasstransfer.2008.11.002
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