Precise Fabrication of Fresnel Flash Lens Featured with V-Grooved Microstructures
-
M.-S. Huang
and Y.-C. Chen
Abstract
A Fresnel lens is characterized by a micrometer-sized v-grooved structure, and its microstructure quality and curvature accuracy strongly influence its illuminance performance. In this study, a mold is designed for fabricating a Fresnel flash lens involving injection compression molding (ICM). The Taguchi method and parametric analysis are applied to examine the effect of process parameters (mold temperature, melt temperature, injection speed, packing pressure, compression pressure, and time) on the molding quality. Increasing the mold temperature and packing pressure generally improves the polymer melt fill in microsized cavities. ICM enables the realization of v-grooved microstructures with an accurate height replication rate (96.1%) as well as high curvature accuracy (6 μm), creating good optical qualities of the fabricated Fresnel lens with respect to maximum illuminance and illuminance uniformity.
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Articles in the same Issue
- Contents
- Contents
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- Swelling Properties and Environmental Responsiveness of a Superabsorbent Composite Microsphere Based on Starch-g-Poly(acrylic acid)/Organo-Mordenite
- Study on Permeability of Porous Ultra-High Molecular Weight Polyethylene (UHMWPE)
- Precise Fabrication of Fresnel Flash Lens Featured with V-Grooved Microstructures
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- Forming of Thermoplastic Matrix Composites with Gas Pressure – the Influence of Blank Holder and Sheet Temperature on the Forming Pressure and Drawing Ratio
- Time Dependence of Morphology and Mechanical Properties of Injection Molded Recycled PET
- A Generalized 2D Output Model of Polymer Melt Flow in Single-Screw Extrusion
- Flow Behavior of PP-Polymer Nanocomposites in Capillary and Injection Molding Dies
- A Recollection with Respect to Flow Induced Crystallization in Polymer Melt Processing
- Optical Properties of HDPE in Injection Molding and Injection Press Molding for IR System Lenses Part II: Mold Temperature and Surface Roughness Effects on Injection Molding
- Modeling Temperature and Time Dependence of the Wetting of Tool Steel Surfaces by Polymer Melts
- Modification Induced by Gamma Irradiation in Polystyrene/Poly(methyl methacrylate) Blends
- Rapid Communications
- Study on the Influence of Extrusion Temperature and Extrusion Die on the Properties of Self-Reinforced PP Sheets
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Swelling Properties and Environmental Responsiveness of a Superabsorbent Composite Microsphere Based on Starch-g-Poly(acrylic acid)/Organo-Mordenite
- Study on Permeability of Porous Ultra-High Molecular Weight Polyethylene (UHMWPE)
- Precise Fabrication of Fresnel Flash Lens Featured with V-Grooved Microstructures
- Ion Etching Induced Surface Patterns of Blend Polymer (Poly Ethylene Glycol – Poly Methyl Methacrylate) Irradiated with Gamma Rays
- Devulcanization of Scrap Tire Rubber with Supercritical CO2: A Study of the Effects of Process Parameters on the Properties of Devulcanized Rubber
- Forming of Thermoplastic Matrix Composites with Gas Pressure – the Influence of Blank Holder and Sheet Temperature on the Forming Pressure and Drawing Ratio
- Time Dependence of Morphology and Mechanical Properties of Injection Molded Recycled PET
- A Generalized 2D Output Model of Polymer Melt Flow in Single-Screw Extrusion
- Flow Behavior of PP-Polymer Nanocomposites in Capillary and Injection Molding Dies
- A Recollection with Respect to Flow Induced Crystallization in Polymer Melt Processing
- Optical Properties of HDPE in Injection Molding and Injection Press Molding for IR System Lenses Part II: Mold Temperature and Surface Roughness Effects on Injection Molding
- Modeling Temperature and Time Dependence of the Wetting of Tool Steel Surfaces by Polymer Melts
- Modification Induced by Gamma Irradiation in Polystyrene/Poly(methyl methacrylate) Blends
- Rapid Communications
- Study on the Influence of Extrusion Temperature and Extrusion Die on the Properties of Self-Reinforced PP Sheets
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts