Fabrication of micro-lens array on convex surface by meaning of micro-milling

Peng Zhang; Yunlong Du; Bo Wang; Debin Shan

doi:10.1117/12.2069855

6 August 2014 Fabrication of micro-lens array on convex surface by meaning of micro-milling

Peng Zhang, Yunlong Du, Bo Wang, Debin Shan

Proceedings Volume 9281, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 928106 (2014) https://doi.org/10.1117/12.2069855
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

In order to develop the application of the micro-milling technology, and to fabricate ultra-precision optical surface with complex microstructure, in this paper, the primary experimental research on micro-milling complex microstructure array is carried out. A complex microstructure array surface with vary parameters is designed, and the mathematic model of the surface is set up and simulated. For the fabrication of the designed microstructure array surface, a micro three-axis ultra-precision milling machine tool is developed, aerostatic guideway drove directly by linear motor is adopted in order to guarantee the enough stiffness of the machine, and novel numerical control strategy with linear encoders of 5nm resolution used as the feedback of the control system is employed to ensure the extremely high motion control accuracy. With the help of CAD/CAM technology, convex micro lens array on convex spherical surface with different scales on material of polyvinyl chloride (PVC) and pure copper is fabricated using micro tungsten carbide ball end milling tool based on the ultra-precision micro-milling machine. Excellent nanometer-level micro-movement performance of the axis is proved by motion control experiment. The fabrication is nearly as the same as the design, the characteristic scale of the microstructure is less than 200μm and the accuracy is better than 1μm. It prove that ultra-precision micro-milling technology based on micro ultra-precision machine tool is a suitable and optional method for micro manufacture of microstructure array surface on different kinds of materials, and with the development of micro milling cutter, ultraprecision micro-milling complex microstructure surface will be achieved in future.

Citation Download Citation

Peng Zhang, Yunlong Du, Bo Wang, and Debin Shan "Fabrication of micro-lens array on convex surface by meaning of micro-milling", Proc. SPIE 9281, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 928106 (6 August 2014); https://doi.org/10.1117/12.2069855

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KEYWORDS

Micro cutting

Control systems

Motion controllers

3D modeling

Computer aided design

Tungsten

Mathematical modeling

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