8 December 2004 Polymer microstructures: are they applicable as optical components?
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Proceedings Volume 5591, Lab-on-a-Chip: Platforms, Devices, and Applications; (2004) https://doi.org/10.1117/12.578210
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States
Abstract
We present a new method to manufacture arrays of microlenses with varying diameter and/or varying focal length on the same substrate material. The method combines direct laser machining with a casting method and is based on the exposure of poly-methylmethacrylate (PMMA) to an UV Excimer Laser (248 nm). A following thermal treatment of the PMMA results in spherical caps in the PMMA which subsequently serves as a mould to replicate inverse structures in poly-dimethylsiloxane (PDMS) by casting. Lenses with a focal length of 300 µm to 4,000 µm have been realized in a PDMS replicate from the PMMA, however, this method is not limited to these materials if the soft embossing technology is applied where an elastomer such as PDMS serves as the mould.
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Oliver Geschke, Oliver Geschke, Martin F. Jensen, Martin F. Jensen, Gerardo Perozziello, Gerardo Perozziello, Frederik Bundgaard, Frederik Bundgaard, Christian B. Nielsen, Christian B. Nielsen, Leif Højslet Christensen, Leif Højslet Christensen, } "Polymer microstructures: are they applicable as optical components?", Proc. SPIE 5591, Lab-on-a-Chip: Platforms, Devices, and Applications, (8 December 2004); doi: 10.1117/12.578210; https://doi.org/10.1117/12.578210
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