Fabrication of three-dimensional microlens arrays in sol-gel glass

被引:8
|
作者
Orhan, JB [1 ]
Parashar, VK [1 ]
Sayah, A [1 ]
Gijs, MAM [1 ]
机构
[1] Ecole Polytech Fed Lausanne, Inst Microelect & Microsyst, CH-1015 Lausanne, Switzerland
关键词
microlens array; sol-gel process; replication technology; photoresist reflow; high aspect ratio;
D O I
10.1016/j.mee.2006.01.045
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present a novel technological approach for the realization of three-dimensional microlens arrays in sol-gel glass. Hundred Micron thick cylindrical SU-8 structures are used to generate a polydimethylsiloxane (PDMS) mold that is subsequently filled with AZ 4562 photoresist. During a thermal softening process, the upper part of the photoresist cylinder transforms into a spherical-like shape. An in-house developed sol-gel material with low shrinkage is then used to replicate via a second PDMS mold the photoresist lenses into crack-free glass structures with optical quality. (c) 2006 Published by Elsevier B.V.
引用
收藏
页码:1329 / 1332
页数:4
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