Title: An experimental method for laser micro-machining of spherical and elliptical 3-D objects

Authors: Wen-Hui Lee, T. Ozel

Addresses: Department of Industrial and Systems Engineering, Rutgers University, Piscataway, NJ 08854-8018, USA. ' Department of Industrial and Systems Engineering, Rutgers University, Piscataway, NJ 08854-8018, USA

Abstract: Laser micro-machining has the capability to fabricate complex geometric features which can be performed by controlling laser beam properties. However, this method requires additional capabilities for a typical laser system. In this paper, an experimental method is presented to fabricate 3-D spherical and elliptical geometric features which are typical for aspheric and or refractive micro-lenses. A computational simulation is developed to design a mask with varying density and diameter of the holes. The masks are created using micro-drilling and utilised in laser micromachining of 3-D objects on polycarbonate polymer substrates.

Keywords: laser ablation; laser micromachining; elliptical features; spherical features; geometric features; microlenses; lens manufacture; polycarbonate polymer substrates; laser machining.

DOI: 10.1504/IJNM.2009.027428

International Journal of Nanomanufacturing, 2009 Vol.3 No.3, pp.264 - 278

Published online: 22 Jul 2009 *

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