Extrusion printing for fabrication of spherical and cylindrical microlens arrays

Appl Opt. 2016 Sep 1;55(25):6947-52. doi: 10.1364/AO.55.006947.

Abstract

In this paper, we present an extrusion printing technique for producing spherical and cylindrical plano-convex microlens arrays with controllable feature dimensions. This technique employs a robotic adhesive dispenser for robotically controlled microextrusion of ultraviolet (UV) curable polymer onto a glass substrate surface to directly deposit the microlens arrays. It provides a simple and flexible alternative to fabricate both spherical and cylindrical microlens arrays.