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Fabrication of refractive microlens arrays by visible irradiation of acrylic monomers: influence of photonic parameters

Published online by Cambridge University Press:  15 January 2001

C. Croutxé-Barghorn ,
O. Soppera  and
D. J. Lougnot
C. Croutxé-Barghorn*
Affiliation:
Département de Photochimie Générale, E.N.S.C. Mulhouse (UMR 7525) , 3 rue Alfred Werner, 68093 Mulhouse Cedex, France
O. Soppera
Affiliation:
Département de Photochimie Générale, E.N.S.C. Mulhouse (UMR 7525) , 3 rue Alfred Werner, 68093 Mulhouse Cedex, France
D. J. Lougnot
Affiliation:
Département de Photochimie Générale, E.N.S.C. Mulhouse (UMR 7525) , 3 rue Alfred Werner, 68093 Mulhouse Cedex, France
*
[email protected]
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Abstract

The fabrication of refractive microlenses with self-developing photopolymers is reported. A spatially controlled illumination of the photosensitive layer induced an inhomogeneous photopolymerization involving formation of 3-D polymer network, mass-transport process of reactive species and bending of the surface. The process exhibited a completely self-processing character without any chemical post-treatment to reveal the relief. The lens arrays displayed diameters ranging from less than 100 μm to 1 mm and focal lengths from 100 μm to a few millimeters, depending on photonic, optical and physico-chemical parameters. The paper focuses on the importance of photonic parameters in the generation of microlens arrays and discusses the flexibility of this technique in the visible range.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 13 , Issue 1 , January 2001 , pp. 31 - 37
Copyright
© EDP Sciences, 2001

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