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Three Dimensional Analysis of Shape Deformation in Injection Molded Optical Lens

  • W.-B. Young
Published/Copyright: May 2, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 19 Issue 1

Abstract

The shape deformation of optical pickup lens in injection molding was investigated in this study. It was realized that residual stresses and warpage deformation in injection molding parts were affected by different process conditions such as melt temperature, mold temperature, packing pressure and time. A two dimensional analysis in injection molding only provides information on the thickness shrinkage for optical lens. In order to simulate the surface contour variations, a three-dimensional warpage analysis was conducted in this study using the finite element method. Moldings under different packing pressures and mold temperatures were numerically investigated to study the effects on the residual stresses and deformation of a molded pickup lens. The packing pressure and mold temperature were found to be the dominant factors that affect the shrinkage of lens in the thickness direction, resulting in surface contour deviation.

∗ Mail address: W.-B. Young, Dept. of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan 70101, R. O.C. E-mail:

References

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Received: 2003-5-12
Accepted: 2003-11-9
Published Online: 2013-05-02
Published in Print: 2004-03-01

© 2004, Carl Hanser Verlag, Munich

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  3. Screw Extrusion
  4. Physico-Mathematical Model for the Description of the Temperature Development and the Power Consumption in Co-Rotating Twin Screw Extruders
  5. Prediction of Residence Time Distribution for Different Screw Configurations of a Ko-Kneader by using a Cluster Model
  6. Die Extrusion
  7. In-line Monitoring of PVC Melt Viscosity Using Dielectric Measurements
  8. Die Wall Effects, Contact Angles and Slippage in the Flow of Polymer Melts and Polymer-Particulate Compounds with Carboxylic Acids in a Slit Die
  9. Crystallization
  10. Fractionated Crystallization and Morphology in Binary Blends of Isotactic PP and HDPE with Cycloolefin Copolymers
  11. Impact Strength of β-Nucleated Polypropylene
  12. Film
  13. Extensional Rheology of Polypropylene in Relation to Processing Characteristics
  14. Thickness Uniformity of Double Bubble Tubular Film Process for Producing Biaxially Oriented PA 6 Film
  15. Bowing Phenomenon in Double Bubble Tubular Film Processing for PA 6
  16. Molding
  17. A New Design Method to Improve Flow Uniformity in a Reaction Injection Mold Entry
  18. Three Dimensional Analysis of Shape Deformation in Injection Molded Optical Lens
  19. Development of a Hybrid Solid-Microcellular Co-injection Molding Process
  20. PPS News
  21. PPS News
https://doi.org/10.3139/217.1808

Articles in the same Issue

  1. Contents
  2. Contents
  3. Screw Extrusion
  4. Physico-Mathematical Model for the Description of the Temperature Development and the Power Consumption in Co-Rotating Twin Screw Extruders
  5. Prediction of Residence Time Distribution for Different Screw Configurations of a Ko-Kneader by using a Cluster Model
  6. Die Extrusion
  7. In-line Monitoring of PVC Melt Viscosity Using Dielectric Measurements
  8. Die Wall Effects, Contact Angles and Slippage in the Flow of Polymer Melts and Polymer-Particulate Compounds with Carboxylic Acids in a Slit Die
  9. Crystallization
  10. Fractionated Crystallization and Morphology in Binary Blends of Isotactic PP and HDPE with Cycloolefin Copolymers
  11. Impact Strength of β-Nucleated Polypropylene
  12. Film
  13. Extensional Rheology of Polypropylene in Relation to Processing Characteristics
  14. Thickness Uniformity of Double Bubble Tubular Film Process for Producing Biaxially Oriented PA 6 Film
  15. Bowing Phenomenon in Double Bubble Tubular Film Processing for PA 6
  16. Molding
  17. A New Design Method to Improve Flow Uniformity in a Reaction Injection Mold Entry
  18. Three Dimensional Analysis of Shape Deformation in Injection Molded Optical Lens
  19. Development of a Hybrid Solid-Microcellular Co-injection Molding Process
  20. PPS News
  21. PPS News
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