Polymer microstructures: are they applicable as optical components?

Oliver Geschke, Martin Frøhling Jensen, Gerardo Perozziello, Frederik Bundgaard, Christian Bergenstof Nielsen, L.H. Christensen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    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.
    Original languageEnglish
    Title of host publicationProceedings of SPIE Optics East
    Number of pages80
    Volume5591 / Devices and Fabrication II
    PublisherSPIE - International Society for Optical Engineering
    Publication date2004
    Publication statusPublished - 2004
    EventLab-on-a-Chip: Platforms, Devices, and Applications - Philadelphia, PA, USA
    Duration: 1 Jan 2004 → …


    ConferenceLab-on-a-Chip: Platforms, Devices, and Applications
    CityPhiladelphia, PA, USA
    Period01/01/2004 → …


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