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Machining of Lenticular Lens Silicon Molds with a Combination of Laser Ablation and Diamond Cutting

The State Key Laboratory of Ultraprecision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
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Micromachines 2019, 10(4), 250; https://doi.org/10.3390/mi10040250
Received: 11 March 2019 / Revised: 12 April 2019 / Accepted: 14 April 2019 / Published: 16 April 2019
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Abstract

Lenticular lenses are widely used in the three-dimensional display industry. Conventional lenticular lens components are made of plastics that have low thermal stability. An alternative is to use glass to replace plastic as the lenticular lens component material. Single crystal silicon is often used as the mold material in the precision glass molding process. It is, however, difficult to fabricate a lenticular lens silicon mold that has a large feature size compared to the critical depth of cut of silicon. In order to solve the problems of machining lenticular lens silicon molds using the conventional diamond cutting method, such as low machining efficiency and severe tool wear, a hybrid machining method that combined laser ablation and diamond cutting was proposed. A feasibility study was performed to investigate the possibility of using this method to fabricate a lenticular lens silicon mold. The influence of the laser parameters and machining parameters on the machining performance was investigated systematically. The experimental results indicated that this hybrid machining method could be a possible method for manufacturing lenticular lens silicon molds or other similar microstructures. View Full-Text
Keywords: hybrid machining; laser ablation; diamond cutting; lenticular lens; single crystal silicon hybrid machining; laser ablation; diamond cutting; lenticular lens; single crystal silicon
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Han, J.; Li, L.; Lee, W. Machining of Lenticular Lens Silicon Molds with a Combination of Laser Ablation and Diamond Cutting. Micromachines 2019, 10, 250.

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