Design and Fabrication of Nonconventional Optical Components by Precision Glass Molding

Released on by Peng He
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  • Design and Fabrication of Nonconventional Optical Components by Precision Glass Molding Book Detail

  • Author : Peng He
  • Release Date : 2014
  • Publisher :
  • Genre :
  • Pages : 120
  • ISBN 13 :
  • File Size : 88,88 MB
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Design and Fabrication of Nonconventional Optical Components by Precision Glass Molding by Peng He PDF Summary

Book Description: Precision glass molding is a net-shaping process to fabricate glass optics by replicating optical features from precision molds to glass at elevated temperature. The advantages of precision glass molding over traditional glass lens fabrication methods make it especially suitable for the production of optical components with complicated geometries, such as aspherical lenses, diffractive hybrid lenses, microlens arrays, etc. Despite of these advantages, a number of problems must be solved before this process can be used in industrial applications. The primary goal of this research is to determine the feasibility and performance of nonconventional optical components formed by precision glass molding. This research aimed to investigate glass molding by combing experiments and finite element method (FEM) based numerical simulations. The first step was to develop an integrated compensation solution for both surface deviation and refractive index drop of glass optics. An FEM simulation based on Tool-Narayanaswamy-Moynihan (TNM) model was applied to predict index drop of the molded optical glass. The predicted index value was then used to compensate for the optical design of the lens. Using commercially available general purpose software, ABAQUS, the entire process of glass molding was simulated to calculate the surface deviation from the adjusted lens geometry, which was applied to final mold shape modification. A case study on molding of an aspherical lens was conducted, demonstrating reductions in both geometry and wavefront error by more than 60%.

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Fabrication of Complex Optical Components

Fabrication of Complex Optical Components

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High quality optical components for consumer products made of glass and plastic are mostly fabricated by replication. This highly developed production technolog